• Minimum order quantity -1 roll (in a roll from 30 to 35 kg).
• You can get advice by calling the sales department: +7 (83159) 689-13 And +7 (83159) 689-42 Monday to Thursday from 8:00 to 17:00 and Friday from 8:00 to 16:00 Moscow time. Lunch break from 12:00 to 12:40.
• Send written applications to e-mail: [email protected] .

Delivery conditions

• Not later than 20 days after receipt of a written application and advance payment in the amount of 100% of the cost of the goods.
• For systematic deliveries no later than 20 days after receipt of a written application.

Calculations

• Transfer of advance payment of 100% of the cost of the goods to the supplier's settlement account.
• For systematic deliveries, transfer of 100% of the cost of the goods to the supplier's settlement account after the goods are transferred to the buyer.
• Letter of credit.
• Cash.

Delivery

• By car.
• Rail transport.
• Receipt from the supplier (selection of goods).
• Russian Post.

Shipment

• On the terms of self-delivery from warehouses finished products Bor felt factory.
• Luggage from the Gorky-Moskovsky station to the destination station.
• Across transport company at the choice of the buyer ("Attenta", "Autotrading", "PEK", "Zheldorekspeditsiya", "Business Lines", "Ratek", "RAIL Continent", etc.).
  By the Supplier's motor transport to Moscow.
• 5-ton container with Art. Mokhovye Gory GZD to the destination station. Felt loading rate in a 5-ton container is 1500 kg.
• 20 ton container with st. Kostariha GZD to the destination station. Felt loading rate in a 20-ton container is 5000 kg.

Felt technical semi-coarse and parts from it for mechanical engineering

This standard applies to technical semi-coarse wool felt and felt containing chemical fibers and parts from it for mechanical engineering (oil seals, gaskets, filters).

MAIN PARAMETERS AND DIMENSIONS

Semi-coarse-wool technical felt, depending on the purpose, is divided into types:
felt for oil seals used to retain lubricating oils in friction points and protect friction points from water and dust ingress;
felt for gaskets that protect machine parts from abrasion, pollution, shock, shock, and also used for sound absorption.
Felt for gaskets, depending on the degree of compaction, are produced in two grades:
A - density (0.34±0.02) g/cm³;
B - density (0.28±0.02) g/cm³ (for soft pads);
felt for filters used to filter oils;
The symbol of felt includes its name according to the type of wool: semi-coarse wool pure wool - P, semi-coarse wool with the content of chemical fibers - P x; purpose (gland - C, gasket - Pr, filter - F), thickness, as well as the designation of this standard.
Examples symbol semi-coarse pure wool felt 10 mm thick:
for stuffing boxes - felt PS 10 GOST 6308-71;
for gaskets grade A - felt PPr A10 GOST 6308-71;
for gaskets grade B - felt PPr B10 GOST 6308-71;
for filters - felt PF10 GOST 6308-71.
Examples of the symbol for semi-coarse wool felt containing chemical fibers 10 mm thick:
for stuffing boxes - felt P x C 10 GOST 6308-71
for gaskets brand A - felt P x PrA 10 GOST 6308-71
for gaskets grade B - felt P x P r B 10 GOST 6308-71
for filters - felt P x F 10 GOST 6308-71.
Parts for mechanical engineering from semi-coarse felt, depending on the purpose and shape, are made the following types indicated in Table. one.

Table 1.

The symbol for felt parts includes the designation of the types of parts and their dimensions in millimeters in the following order:
by rings - outer and inner diameters, thickness;
for tapes and plates - length, width, thickness;
on disks - diameter, thickness;
according to curly details - after the symbol, “according to the drawing” is indicated.

EXAMPLES OF SYMBOLS

Semi-coarse-wool pure-wool gland rings with an outer diameter of 75 mm, an inner diameter of 50 mm, a thickness of 7 mm:
Ring SP-75-50-7 GOST 6308-71
Semi-coarse-wooled gland rings containing chemical fibers with an outer diameter of 50 mm, an inner diameter of 30 mm, a thickness of 7 mm:
Ring SP x -50-30-7 GOST 6308-71
Liner tapes grade A semi-coarse wool pure wool length 80 mm, width 40 mm, thickness 15 mm:
Tape P r AP-80-40-15 GOST 6308-71
Tape-laying grade A semi-coarse wool with the content of chemical fibers 80 mm long, 40 mm wide, 15 mm thick:
Tape P r AP x -80-40-1 $ GOST 6308-71
Liner tapes grade B semi-coarse wool pure wool 80 mm long, 40 mm wide, 15 mm thick:
Tape P r BL-80-40-15 GOST 6308-71
Liner tape grade B, semi-coarse wool with chemical fibers, 70 mm long, 50 mm wide, 10 mm thick:
Tape P r BP k -70-50-10 GOST 6308-71
Filter plates of semi-coarse wool pure wool 300 mm long, 200 mm wide, 5 mm thick:
Plate FP-300-200-5 GOST 6308-71
Semi-coarse-wool filter plates with the content of chemical fibers 350 mm long, 250 mm wide, 5 mm thick:
Plate FP x -350-250-5 GOST 6308-71
Disk-spacer grade A semi-coarse wool pure wool with a diameter of 120 mm, thickness 10 mm:
Disk P r AP x -120-10 GOST 6308-71
Omentum curly semi-coarse wool pure wool:
Gland F g P according to the drawing GOST 6308-71
Curly semi-coarse-wool omentum containing chemical fibers:
Gland F g P x according to the drawing GOST 6308-71
The nominal dimensions and maximum deviations in thickness of all types of felt must comply with the standards specified in Table. 2.

Table 2. mm

The dimensions of all types of felt in length and width are set by agreement between the consumer organization and the manufacturer within the following limits: in length from 0.8 to 5.0 m, in width - from 0.7 to 2.0 m.
Felt parts in shape and size must comply with the drawings of the consumer organization, agreed with the manufacturer.
Limit deviations from the nominal dimensions of felt rings and disks must correspond to those indicated in Table. 3, and felt tapes, plates and figured parts - in table. 4.
At the request of the consumer, for especially precise parts of gland rings and disks ranging in size from 10 to 25 mm, the tolerance for the outer diameter is +0.8 -0.5 mm.

Table 3. mm

The nominal dimensions and maximum deviations in the thickness of felt parts (oil seals, gaskets and filters) must comply with the standards specified in Table. five.

Table 5. mm

TECHNICAL REQUIREMENTS

Technical semi-coarse-wool felt according to the composition of the fibers in the mixture must correspond to that indicated in Table. 6.

Table 6

The mass fraction in the mixture of non-woolen fibers is allowed due to their presence in the tow, production waste and recovered wool or due to the partial replacement of these components with non-woolen fibers. The mass fraction of non-woolen fibers in the finished felt should not exceed the norms indicated in Table. 7.
It is allowed to replace up to 1% of sheep's natural semi-lipped varietal wool and up to 9% of sheep's fur semi-fine and semi-coarse wool and combed semi-coarse tow with a hot-washed hybrid klunker.
The color of the felt should be natural; different shades are allowed due to the use of dyed restored wool and combed semi-coarse-wool tow.
According to physical, mechanical and chemical indicators, technical semi-coarse-wool felt must comply with the standards specified in Table. 7.
The density of felt parts, depending on their thickness and outer diameter or length, must comply with the standards specified in Table. 8.
Deviations in the density of parts are allowed: minus - 0.01 g / cm³ for parts made of semi-coarse wool felt, 0.02 g / cm³ - for parts made of semi-coarse wool felt with a content of chemical fibers, plus - within the indicator for felt, taking into account the tolerance for volume mass of felt (see table. 7).
The density of the rings indicated in the table. 8 applies to rings having a flange width of at least 7 mm.
The density of rings having a flange width of less than 7 mm up to and including 2.5 mm is established by agreement between the consumer organization and the manufacturer.
The density of felt parts for filters of all sizes must comply with the standards specified in Table. 7 for the corresponding felts.
Felt rings with outer diameter up to 60 mm incl. they are made whole-cut, over 60 mm - sewn from a strip, except for those rings that are technically impossible to sew due to the large difference in the ratio between the width of the side and the thickness of the ring. Such rings are made in one piece.
At the request of the consumer, it is allowed to produce whole-cut rings with an outer diameter of more than 60 mm.
Felt rings sewn from strip must meet the following requirements:
with an outer diameter of the ring up to 400 mm incl. one seam is allowed, more than 400 mm - two seams;
the joint line at the stitching point should be inclined, and the cut angle (a) should be 20-30 ° (see drawing);
stitching is carried out in at least two rows of linen threads according to GOST 14961-85 of the following linear densities:
105tex×5, 130tex×4, 105tex×6, 130tex×5 or extra strong cotton thread according to GOST 6309-80 of the following numbers: 0 (with nine folds), 00 (with twelve folds), 1 (with nine folds) ), 10 (with six additions);
cotton extra strong threads according to GOST 6309-80 of the following numbers: 0 (with nine folds), 00 (twelve folds), 1 (nine folds), 10 (six folds).

Table 7

Table 8

The linear density of the threads is chosen depending on the width of the rim and the thickness of the ring.
With a rim width of 10 mm or more, the line closest to the inner edge of the rim must be at least 3 mm away from it. With a rim width of less than 10 mm, it is allowed to sew the rings in one row with the stitching at an equal distance from the edges of the rim;
when stitching rings from strips up to 10 mm thick, the stitch pitch should be no more than 6 mm, with a strip thickness of more than 10 mm - no more than 10 mm;
joint cut planes must fit snugly against each other and must not be displaced;
at the junction, the thickness of the ring must be within the limits and maximum deviations indicated in Table. five;
at the junction, the elasticity of the ring should not differ markedly from the elasticity of the ring in other areas;
the bulk of the fibers in the crosslinked ring should be directed along the circumference of the ring. By agreement with the consumer, it is allowed to manufacture rings with a transverse arrangement of fibers.
Felt and details from it should not show signs of delamination and should be resistant to separation into layers.
Gluing felt and details from it is not allowed.
The surface of the parts must be clean, with evenly removed pile, without scars. The presence of pile is allowed in the details-layings.
Details should not have tears, torn places, bevels and other mechanical damage.

STATE STANDARD
UNION SSR

TECHNICAL FELT
SHIM-COAT AND DETAILS
FROM IT FOR ENGINEERING

TECHNICAL CONDITIONS

GOST 6308-71

USSR STATE MANAGEMENT COMMITTEE
PRODUCT QUALITY AND STANDARDS

Moscow

STATE STANDARD OF THE UNION OF THE SSR

Validity from 01.07.72

until 01.01.93

This standard applies to technical semi-coarse wool felt and felt containing chemical fibers and parts from it for mechanical engineering (oil seals, gaskets, filters).

1. MAIN PARAMETERS AND DIMENSIONS

1.1. Semi-coarse-wool technical felt, depending on the purpose, is divided into types:

felt for oil seals used to retain lubricating oils in friction points and protect friction points from water and dust ingress;

felt for gaskets that protect machine parts from abrasion, pollution, shock, shock, and also used for sound absorption.

Felt for gaskets, depending on the degree of compaction, is produced in two grades:

A - density (0.34± 0.02) g/cm3:

B - density (0.28 ± 0.02) g / cm 3 (for soft pads);

felt for filters used to filter oils;

1.1.1. The symbol of felt includes its name according to the type of wool: semi-coarse wool pure wool - P, semi-coarse wool with the content of chemical fibers - P X; purpose (gland - C, gasket - Pr, filter - F), thickness, as well as the designation of this standard.

Semi-coarse pure wool felt 10 mm thick:

for stuffing boxes - felt PS 10 GOST 6308-71;

for gaskets grade A - felt PPr A10 GOST 6308-71;

for gaskets grade B - felt PPr B10 GOST 6308-71;

for filters - felt PF10 GOST 6308-71.

Symbol examplessemi-coarse wool felt containing chemical fibers 10 mm thick:

for stuffing boxes - felt P X FROM 10 GOST 6308-71

for gaskets brand A - felt P X P R BUT 10 GOST 6308-71

for gaskets brand B - felt P X P R B 10 GOST 6308-71

for filters - felt P X F 10 GOST 6308-71.

1.2. Parts for mechanical engineering from semi-coarse felt, depending on the purpose and shape, are made of the following types indicated in Table. .

Table 1

Notes:

1. Symbol for figured parts - F g.

2. A rectangular felt piece up to 100 mm wide is called a tape, and more than 100 mm wide is called a plate.

1.2.1. The symbol for felt parts includes the designation of the types of parts and their dimensions in millimeters in the following order:

but for rings - outer and inner diameters, thickness;

for tapes and plates - length, width, thickness;

on disks - diameter, thickness;

according to curly details - after the symbol, “according to the drawing” is indicated.

Legend Examples

Semi-coarse-wool pure-wool gland rings with an outer diameter of 75 mm, an inner diameter of 50 mm, a thickness of 7 mm:

Ring SP-75-50-7 GOST, 6308-71

Semi-coarse-wooled gland rings containing chemical fibers with an outer diameter of 50 mm, an inner diameter of 30 mm, a thickness of 7 mm:

SP ring X -50-30-7 GOST 6308-71

Liner tapes grade A semi-coarse wool pure wool length 80 mm, width 40 mm, thickness 15 mm:

Ribbon P R AP-80-40-15 GOST 6308-71

Liner tape grade A, semi-coarse wool with chemical fibers, 80 mm long, 40 mm wide, 15 mm thick: . 4

Ribbon P R AP X -80-40-15 GOST 6308-71

Liner tapes grade B semi-coarse wool pure wool 80 mm long, 40 mm wide, 15 mm thick:

Ribbon P R BP-80-40-15 GOST 6308-71

Liner tape grade B, semi-coarse wool with chemical fibers, 70 mm long, 50 mm wide, 10 mm thick:

Ribbon P R BP X -70-50-10 GOST 6308-71

Filter plates of semi-coarse wool pure wool 300 mm long, 200 mm wide, 5 mm thick:

Plate FP-300-200-5 GOST 6308-71

Semi-coarse-wool filter plates with the content of chemical fibers, 350 mm long, 250 mm wide, 5 mm thick m m:

FP plate X -350-250-5 GOST 6308-71

Spacer disc, grade A, semi-coarse wool, pure wool, diameter 120 mm, thickness 10 mm:

Disk P R AP X -120-10 GOST 6308-71

Omentum curly semi-coarse wool pure wool:

Oil seal F G P according to the drawing GOST 6308-71

Curly semi-coarse-wool omentum containing chemical fibers:

Oil seal F G P X according to the drawing GOST 6308-71

1.1 - 1.2.1. (Revised edition, Rev. No. 4).

1.3. The nominal dimensions and maximum deviations in thickness of all types of felt must comply with the standards specified in Table. .

Table 2

mm

1.4. The dimensions of all types of felt in length and width are set by agreement between the consumer organization and the manufacturer within the following limits: in length from 0.8 to 5.0 m, in width - from 0.7 to 2.0 m.

1.5. Felt parts in shape and size must comply with the drawings of the consumer organization, agreed with the manufacturer.

Limit deviations from the nominal dimensions of felt rings and disks must correspond to those indicated in Table. , a felt tapes, plates and figured parts - in table. .

1.6. At the request of the consumer, for especially precise parts of stuffing rings and discs ranging in size from 10 to 25 mm, the tolerance for the outer diameter is set to mm.

Table 3

mm

Table 4

mm

Note. Limit deviations for tapes and plates with a length and width over 400 mm are set to ± 1.0 mm for every 100 mm of additional length and width over 400 mm.

1.7. The nominal dimensions and maximum deviations in the thickness of felt parts (oil seals, gaskets and filters) must comply with the standards specified in Table. .

Table 5

mm

2. TECHNICAL REQUIREMENTS

2.1. Technical semi-coarse-wool felt according to the composition of the fibers in the mixture must correspond to that indicated in Table. .

Table 6

The mass fraction in the mixture of non-woolen fibers is allowed due to their presence in the tow, production waste and recovered wool or due to the partial replacement of these components with non-woolen fibers. The mass fraction of non-woolen fibers in the finished felt should not exceed the norms indicated in Table. .

It is allowed to replace up to 1% of sheep's natural semi-coarse varietal wool and up to 9% of sheep's fur semi-fine and semi-coarse wool and combed semi-coarse tow with a hot-washed klunker.

(Changed edition, Rev. No. 3, 4).

2.2. The color of the felt should be natural; different shades are allowed due to the use of dyed restored wool and combed semi-coarse-wool tow.

2.3. According to physical, mechanical and chemical indicators, technical semi-coarse-wool felt must comply with the standards specified in Table. .

2.4. The density of felt parts, depending on their thickness and outer diameter or length, must comply with the standards specified in Table. .

2.4.1. Deviations in the density of parts are allowed: minus - 0.01 g / cm 3 for parts made of semi-coarse wool felt, 0.02 g / cm 3 - for parts made of semi-coarse wool felt with a content of chemical fibers, plus - within the indicator for felt, taking into account the tolerance according to the volumetric weight of the felt (see table).

2.3 - 2.4.1. (Revised edition, Rev. No. 4).

2.4.2. The density of the rings indicated in the table. , refers to rings having a flange width of at least 7 mm.

The density of rings having a flange width of less than 7 mm up to and including 2.5 mm is established by agreement between the consumer organization and the manufacturer.

2.5. The density of felt parts for filters of all sizes must comply with the standards specified in Table. for the corresponding felts.

2.6. Felt rings with outer diameter up to 60 mm incl. they are made whole-cut, over 60 mm - sewn from a strip, except for those rings that are technically impossible to sew due to the large difference in the ratio between the width of the side and the thickness of the ring. Such rings are made in one piece.

At the request of the consumer, it is allowed to produce whole-cut rings with an outer diameter of more than 60 mm.

2.7. Felt rings sewn from strip must meet the following requirements:

with an outer diameter of the ring up to 400 mm incl. one seam is allowed, more than 400 mm - two seams;

the joint line at the stitching point should be inclined, and the cut angle (a) should be 20 - 30 ° (see drawing);

Table 7

Notes:

1. Density indicators, mass fraction of free sulfuric acid, vegetable impurities, mineral impurities and non-woolen fibers refer to felt with a normalized moisture content of 13%.

2. The actual moisture content of the felt must not exceed the specified value.

table 8

stitching is carried out in at least two rows of linen threads according to GOST 14961-85 of the following linear densities:

105tex´ 5, 130tex´ 4, 105tex´ 6, 130tex´ 5 or extra strong cotton threads according to GOST 6309-80 of the following numbers: 0 (with nine folds), 00 (twelve folds), 1 (nine folds), 10 (six folds);

extra strong cotton threads according to GOST 6309-80 of the following numbers: 0 (with nine folds), 00 (twelve folds), 1 (nine folds), 10 (six folds).

The linear density of the threads is chosen depending on the width of the rim and the thickness of the ring.

With a rim width of 10 mm or more, the line closest to the inner edge of the rim must be at least 3 mm away from it. With a rim width of less than 10 mm, it is allowed to sew the rings in one row with the stitching at an equal distance from the edges of the rim;

when stitching rings from strips up to 10 mm thick, the stitch pitch should be no more than 6 mm, with a strip thickness of more than 10 mm - no more than 10 mm;

the cut planes of the joint must fit snugly against each other and must not be displaced;

at the junction, the thickness of the ring must be within the limits and maximum deviations indicated in Table. ;

at the junction, the elasticity of the ring should not differ markedly from the elasticity of the ring in other areas;

the bulk of the fibers in the crosslinked ring should be directed along the circumference of the ring. By agreement with the consumer, it is allowed to manufacture rings with a transverse arrangement of fibers.

(Revised edition, Rev. No. 4).

2.8. Felt and details from it should not show signs of delamination and should be resistant to separation into layers.

2.9. Gluing felt and details from it is not allowed.

2.10. The surface of the parts must be clean, with evenly removed pile, without scars. The presence of pile is allowed in the details-layings.

2.11. Details should not have tears, torn places, bevels and other mechanical damage.

3. ACCEPTANCE RULES AND TEST METHODS

3.1. Acceptance rules and test methods - according to GOST 314-72.

3.2. Acceptance of felt by quantity is carried out according to the standard mass.

Conditional mass ( T to) in kilograms is calculated by the formula

,

wherem f - actual mass of felt, kg;

W n - normalized moisture content of felt, %;

W f - actual moisture content of the felt, %.

The calculation is made with an error of up to 0.1 kg.

Sec. .(Revised edition, Rev. No. 1).

4. PACKAGING, LABELING, TRANSPORT AND STORAGE

4.1. The felt cavities are tightly rolled up into a roll weighing no more than 70 kg and tied in two places with a rope along GOST 1868-88. With a felt cavity length of up to 1 m, tying with a rope in one place is allowed.

Tied rolls of felt are packed in packaging fabric according to GOST 5530-81, chemical fiber fabric according to normative and technical documentation or non-woven container fabric according to GOST 14253-83 and other normative and technical documentation. The rolls are sewn up manually with twine according to GOST 17308-88. The stitch length should not exceed (40 ± 10) mm.

When transporting by car in agreement with the consumer, tied rolls of felt may not be packed.

4.2. Felt parts are packed in boxes according to GOST 10350-81or sacks made from the packaging fabric referred to in paragraph .

The weight of each box or bag with felt parts must not exceed 50 kg.

When packing in one box or bag of felt parts different sizes parts of the same size must be tied with twine in bundles. A label must be attached to each pack indicating the details in accordance with clause .

4.1, 4.2. (Changed edition, Rev. No. 2, 4).

4.3. Transport marking - according to GOST 14192-77with indication of the manipulation sign “Afraid of dampness”.

Additionally, each package contains data on the packaged products:

name of the manufacturer and its trademark;

name of felt or felt parts;

the thickness of the felt or the dimensions of the felt parts;

the mass of felt at normalized and actual humidity or the number of felt parts;

OTK stamp;

date of manufacture;

designation of this standard.

(Revised edition, Rev. No. 2).

4.4. Each shipped batch of felt and felt parts must be accompanied by technical documentation certifying the compliance of the products with the requirements of this standard and including:

a) name of the manufacturer;

b) product name by type of wool and purpose;

c) results of inspection and testing of products;

d) the designation of this standard.

4.4a. Felt and felt parts are transported by all types of transport in covered vehicles and universal containers in accordance with the rules for the carriage of goods in force for this type of transport.

By railway the specified products are transported in small and carload shipments or in universal containers.

When transporting felt parts in transport packages, they must be formed in accordance with GOST 26663-85.

When transporting felt to the Far North and hard-to-reach areas, tied rolls must be sheathed with two layers of investment fabric or non-woven container fabric and tied with a rope, and felt parts are packed in boxes in accordance with GOST 10350-81.

(Revised edition, Rev. No. 4).

4.5. Felt and felt parts should be stored in a dry, ventilated area. The height of the stack when laying the felt should not exceed 2 m.

For air access, the base of the stack must be at least 0.2 m above the floor level of the room.

Felt parts should be stored in boxes or on racks in order to protect them from deformation.

4.6. Felt and felt parts should be treated with an anti-grinding preparation at least once every 5 months.

5. MANUFACTURER WARRANTY

5.1. Felt and felt parts must be accepted by the technical control of the manufacturer. The manufacturer shall ensure that the quality of felt and felt parts conforms to the requirements of this standard.

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Light Industry of the USSR

DEVELOPERS:

A. I. Zhirnova, Z. S. Pervukhina, E. M. Kudinova, N. V. Polovinkina

2. APPROVED AND INTRODUCED BY Decree State Committee standards of the Council of Ministers of the USSR of August 18, 1971 No. 1453

3. Inspection frequency - 5 years

4. INSTEAD OF GOST 6308-61

5. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

STATE STANDARD

UNION SSR

TECHNICAL CONDITIONS

GOST 6308-71

Official edition

USSR STATE COMMITTEE FOR PRODUCT QUALITY MANAGEMENT AND STANDARDS

M. TEXTILE AND LEATHER MATERIALS AND PRODUCTS*

CHEMICAL FIBERS

Group M15

to GOST 6308-71 Felt technically! semi-coarse wool and parts from it for mechanical engineering. Specifications

(Reissue May 1990)

UDC 677.63.066: 006.334 Group M15

STATE STANDARD OF THE UNION OF THE SSR

TECHNICAL SEMI-COARSE WOOL FELT AND PARTS FROM IT FOR ENGINEERING

Specifications

Technical half-coarse wool felt and machinery parts from it. Specifications

OKU 81 6121, OKU 61 6320

Valid from 01.07.72 to 01.Q1.73

This standard applies to technical felt, rubo-wool, pure wool felt and felt containing chemical fibers and parts from it for mechanical engineering (oil seals, gaskets, filters).

1. MAIN PARAMETERS AND DIMENSIONS

1.1. Semi-coarse-wool technical felt, depending on the purpose, is divided into types:

felt for oil seals used to retain lubricating oils in friction points and protect friction points from water and dust ingress;

felt for gaskets that protect machine parts from abrasion, pollution, shock, shock, and also used for sound absorption.

Felt for gaskets, depending on the degree of compaction, is produced in two grades;

A - density (0.34 + 0.02) g / cm 3;

B - density (0.28 ± 0.02) g / cm 3 (for soft pads);

felt for filters used to filter oils;

Official publication Reprint prohibited

© Standards Publishing, 1971

© Standards Publishing, 1990

].1J. The conventional designation of felt includes its name according to the type of wool: semi-coarse wool pure wool -17, semi-coarse wool with the content of chemical fibers - L x; designation (gland - C, gasket - Pr, filter -F), thickness, as well as the designation of this standard.

Examples of the symbol for semi-coarse wool pure wool felt 10 mm thick:

for stuffing boxes - felt PS 10 GOST 6308-71; for gaskets grade A - felt PPr A10 GOST 6308-71; for gaskets grade B - felt PPr B10 GOST 6308-71; for filters - felt PF10 GOST 6308-71.

Examples of the symbol for semi-coarse wool felt containing chemical fibers 10 mm thick:

for oil seals - felt L x C 10 GOST 6308-71 for gaskets grade A - felt L x PrA 10 GOST 6308-71 for gaskets grade B - felt 17 X P R B 10 GOST 6308-71 for filters - felt P X F 10 GOST 6308-71.

1.2. Parts for mechanical engineering from semi-coarse felt, depending on the purpose and shape, are made of the following types indicated in Table. one.

Table 1

the name of detail

Ring-gland semi-coarse wool pure wool Ring-gland semi-coarse wool containing chemical fibers

Grade A spacer ring semi-coarse wool pure wool

Gasket ring grade A, semi-coarse wool with chemical fiber content Semi-coarse wool pure wool filter ring

Filter ring semi-coarse with the content of chemical fibers

Tape-gland semi-coarse wool pure wool

Ribbon-gland semi-coarse wool with the content of chemical fibers

Tape-laying grade A semi-coarse wool pure wool

Tape-laying grade B semi-coarse wool pure wool

Tape-laying brand A semi-coarse with

Filter tape semi-coarse wool pure wool

Ring SP Ring SP %

PrAP ring

Ring P R A X

FP ring

Ring FYa X

Tape SL X

Ribbon L R AL

PrBP Tape

Ribbon Ya R AL*

Tape I R BP X

Continuation of Table 1

the name of detail

Part view symbol

Semi-coarse-wool filter tape with the content of chemical fibers

Plate-gland semi-coarse wool pure wool

Plate-gland semi-coarse-wool with the content of chemical fibers

Grade A gasket plate semi-coarse wool pure wool

Plate-laying grade B semi-coarse wool pure wool

Liner plate grade A semi-coarse wool with the content of chemical fibers Plate-laying grade B semi-coarse wool with the content of chemical fibers

Semi-coarse-wool filter plate with the content of chemical fibers

Gland disc semi-coarse wool pure wool Gland disc semi-coarse wool containing chemical fibers

Spacer disc brand A semi-coarse wool pure wool

Grade A spacer disc semi-coarse wool with chemical fibers Semi-coarse wool pure wool filter disc Semi-coarse wool filter disc with chemical fibers

Omentum curly semi-coarse wool pure wool

Figured semi-coarse wool omentum containing chemical fibers

Liner grade A figured semi-coarse wool pure wool

Liner grade B figured semi-coarse wool pure wool

Liner brand A figured semi-coarse wool with the content of chemical fibers Liner brand B figured semi-coarse wool with the content of chemical fibers

Curly semi-coarse-wool filter with the content of chemical fibers

Tape FP X

SP plate

Plate SP X

PrAP plate

Plate /7 R BP

Plate PrAP x

Plate P R BP X

FP plate

FP X plate

SP Drive SP X Drive

PrAP Disk

Disk PrAP x

FP disk X FP disk

Gland F g P

Gland F G P X

Gasket AF G R

Gasket BF T P

Gasket AF G P X Gasket BF G P X Filter F G P Filter F G P X

Notes:

1. Symbol for curly parts-Fg.

2. A rectangular felt piece up to 100 mm wide is called a tape, and more than 100 mm wide is called a plate.

1.2.1. The symbol for felt parts includes

the meaning of the types of parts and their dimensions in millimeters in the following order:

by rings - outer and inner diameters, thickness;

for tapes and plates - length, width, thickness;

on disks - diameter, thickness;

according to curly details - after the symbol, “according to the drawing” is indicated.

Legend Examples

Semi-coarse-wool pure-wool gland rings with an outer diameter of 75 mm, an inner diameter of 50 mm, a thickness of 7 mm:

Ring SP-75-50-7 GOST 6308-71

Semi-coarse-wooled gland rings containing chemical fibers with an outer diameter of 50 mm, an inner diameter of 30 mm, a thickness of 7 mm:

Ring SP x -50-30-7 GOST 6308-71

Liner tapes grade A semi-coarse wool pure wool length 80 mm, width 40 mm, thickness 15 mm:

Tape Ya R AP-80-40-15 GOST 6308-71

Tape-laying grade A semi-coarse wool with the content of chemical fibers 80 mm long, 40 mm wide, 15 mm thick:

Tape Ya r AP x -80-40-16 GOST 6308-71

Liner tapes grade B semi-coarse wool pure wool 80 mm long, 40 mm wide, 15 mm thick:

Tape Ya R BP-80-40-15 GOST 6308-71

Liner tape grade B, semi-coarse wool with chemical fibers, 70 mm long, 50 mm wide, 10 mm thick:

Tape Ya R BP k -70-50-10 GOST 6308-71

Filter plates of semi-coarse wool pure wool 300 mm long, 200 mm wide, 5 mm thick:

Plate FP-300-200-5 GOST 6308-71

Semi-coarse-wool filter plates with the content of chemical fibers 350 mm long, 250 mm wide, 5 mm thick:

Plate FP x -350-250-5 GOST 6308-71

Disk-spacer grade A semi-coarse wool pure wool with a diameter of 120 mm, thickness 10 mm:

Disk Ya R AP x -120-10 GOST 6308-71

Omentum curly semi-coarse wool pure wool: Omentum F g P according to the drawing GOST 6308-71

Curly semi-coarse-wool omentum containing chemical fibers:

Gland F g P x according to the drawing GOST 6308-71

1.1-1.2.1. (Revised edition, Rev. No. 4).

1.3. The nominal dimensions and maximum deviations in thickness of all types of felt must comply with the standards specified in Table. 2.

Table 2mm

1.4. The dimensions of all types of felt in length and width are set by agreement between the consumer organization and the manufacturer within the following limits: in length from 0.8 to 5.0 m, in width - from 0.7 to 2.0 m.

1.5. Felt parts in shape and size must comply with the drawings of the consumer organization, agreed with the manufacturer.

Limit deviations from the nominal dimensions of felt rings and disks must correspond to those indicated in Table. 3, and felt tapes, plates and figured parts - in table. 4.

1.6. At the request of the consumer, for highly precise parts of stuffing rings and discs ranging in size from 10 to 25 mm, tolerance for

outside diameter is set!!’,! mm.

Table 4

Note. Limit deviations for tapes and plugs with a length and width over ±1.0 mm for every 100 mm of additional length and width over 400 mm

400 mm are installed

1.7. The nominal dimensions and maximum deviations in the thickness of felt parts (oil seals, gaskets and filters) must comply with the standards specified in Table. five.

2. TECHNICAL REQUIREMENTS

2.1. Technical semi-coarse-wool felt according to the composition of the fibers in the mixture must correspond to that indicated in Table. 6.

Table 6

The mass fraction in the mixture of non-woolen fibers is allowed due to their presence in the tow, production waste and recovered wool or due to the partial replacement of these components with non-woolen fibers. The mass fraction of wool fibers in the finished felt should not exceed the norms indicated in Table. 7.

It is allowed to replace up to 1% of sheep's natural semi-lipped varietal wool and up to 9% of sheep's fur semi-fine and semi-coarse wool and combed semi-coarse tow with a hot-washed hybrid klunker.

(Changed edition "Revision No. 3" 4).

2.2. The color of the felt should be natural; different shades are allowed in connection with the use of dyed restored wool and combed semi-coarse-haired tow.

2.3. According to physical, mechanical and chemical indicators, technical semi-coarse-wool felt must comply with the standards specified in Table. 7.

2.4. The density of felt parts, depending on their thickness and outer diameter or length, must comply with the standards specified in Table. 8.

2.4.1. Deviations in the density of parts are allowed: minus - 0.01 g / cm 3 for parts made of semi-coarse wool felt, 0.02 g / cm 3 - for parts made of semi-coarse wool felt with a content of chemical fibers, plus - within the indicator for felt, taking into account the tolerance according to the volumetric weight of the felt (see Table 7).

2.3-2.4.1. (Revised edition, Rev. No. 4).

2.4.2. The density of the rings indicated in the table. 8 applies to rings having a flange width of at least 7 mm.

The gauge density, having a bead width of less than 7 mm up to and including 2.5 mm, is established by agreement between the consumer organization and the manufacturer.

2.5. The density of felt parts for filters of all sizes must comply with the standards specified in Table. 7 for the corresponding felts.

2.6. Felt rings with outer diameter up to 60 mm incl. they are made whole-cut, over 60 mm - sewn from a strip, except for those rings that are technically impossible to sew due to the large difference in the ratio between the width of the side and the thickness of the ring. Such rings are made in one piece.

At the request of the consumer, it is allowed to produce whole-cut rings with an outer diameter of more than 60 mm.

2.7. Felt rings sewn from strip must meet the following requirements:

with an outer diameter of the ring up to 400 mm incl. one seam is allowed, more than 400 mm - two seams;

the joint line at the stitching point should be inclined, and the cut angle (a) should be 20-30 ° (see drawing);

stitching is carried out in at least two rows of linen threads according to GOST 14961-85 of the following linear densities:

Notes:

1, Density indicators, mass fraction of free sulfuric acid, vegetable impurities, mineral impurities and non-wool fibers refer to felt with a normalized moisture content of 13%.

2. The actual moisture content of the felt should not exceed the normalized,

GOST 6308-71

1 About GOST 6308-71

105texX5, 130texX4, YuBtexXb, 130texX5 or extra strong cotton threads according to GOST 6309-80 of the following numbers: 0 (with nine folds), 00 (twelve folds), 1 (nine folds), 10 (six folds) );

cotton especially strong threads according to GOST 6309-80 of the following numbers: 0 (with nine additions), 00

(with the number of additions twelve), 1 (with the number of additions nine), 10 (with the number of additions six).

The linear density of the threads is chosen depending on the width of the rim and the thickness of the ring.

With a rim width of 10 mm or more, the line closest to the inner edge of the rim must be at least 3 mm away from it. With a rim width of less than 10 mm, it is allowed to sew the rings in one row with the stitching at an equal distance from the edges of the rim;

when stitching rings from strips up to 10 mm thick, the stitch pitch should be no more than 6 mm, with a strip thickness of more than 10 mm - no more than 10 mm;

the cut planes of the joint must fit snugly against each other and must not be displaced;

at the junction, the thickness of the ring must be within the limits and maximum deviations indicated in Table. five;

at the junction, the elasticity of the ring should not differ markedly from the elasticity of the ring in other areas;

the bulk of the fibers in the crosslinked ring should be directed along the circumference of the ring. By agreement with the consumer, it is allowed to manufacture rings with a transverse arrangement of fibers.

(Revised edition, Rev. No. 4).

2.8. Felt and details from it should not show signs of delamination and should be resistant to separation into layers.

2.9. Gluing felt and details from it is not allowed.

2.10. The surface of the parts must be clean, with evenly removed pile, without scars. The presence of pile is allowed in the details-layings.

2.11. Details should not have tears, torn places, bevels and other mechanical damage.

3. RULES OF ACCEPTANCE AND TEST METHODS

3.1. Acceptance rules and test methods - according to GOST 314-72,

3.2. Acceptance of felt by quantity is carried out according to the standard mass.

Conditional mass (t k) in kilograms is calculated by the formula

where Shf is the actual mass of felt, kg;

W n - normalized moisture content of the felt, %;

W$ - actual moisture content of the felt, %.

The calculation is made with an error of up to 0.1 kg. Sec. 3. (Changed edition, Rev. No. 1).

4. PACKAGING, LABELING, TRANSPORT AND STORAGE

4.1. The felt cavities are tightly rolled up into a roll weighing no more than 70 kg and tied in two places with a rope in accordance with GOST 1868-88. With a felt cavity length of up to 1 m, tying with a rope in one place is allowed.

Tied rolls of felt are packed in packaging fabric according to GOST 5530-81, chemical fiber fabric according to normative and technical documentation or non-woven container fabric according to GOST 14253-83 and other normative and technical documentation. The rolls are sewn manually with twine according to GOST 17308-88. The stitch length should not exceed (40±10) mm.

When transported by road, in agreement with the consumer, it is allowed not to pack the tied rolls of felt.

4.2. Felt parts are packed in boxes in accordance with GOST 10350-81 or bags made of packaging fabric provided for in clause 4.1.

The weight of each box or bag with felt parts must not exceed 50 kg.

When packing felt parts of different sizes in one box or bag, parts of the same size must be tied with twine in packs. A label must be attached to each pack indicating the details in accordance with clause 4.3.

4.1, 4.2. (Changed edition, Rev. No. 2, 4).

4.3. Transport marking - according to GOST 14192-77 with indication of the handling sign "Afraid of dampness".

Additionally, each package contains data on the packaged products:

name of the manufacturer and its trademark;

name of felt or felt parts;

the thickness of the felt or the dimensions of the felt parts;

the mass of felt at normalized and actual humidity or the number of felt parts;

OTK stamp;

date of manufacture;

designation of this standard.

(Revised edition, Rev. No. 2).

4.4. Each shipment of felt and felt parts* must be accompanied by technical documentation certifying the conformity of products to the requirements of this standard and including:

a) name of the manufacturer;

b) product name by type of wool and purpose;

c) results of inspection and testing of products;

d) the designation of this standard.

4.4a. Felt and felt parts are transported by all types of transport in covered vehicles and universal containers in accordance with the rules for the carriage of goods in force for this type of transport.

By rail, these products are transported in small and carload shipments or in universal containers.

When transporting felt parts in transport packages, they must be formed in accordance with GOST 26663-85.

When transporting felt to the Far North and hard-to-reach areas, tied rolls must be sheathed with two layers of investment fabric or non-woven container fabric and tied with a rope, and felt parts are packed in boxes in accordance with GOST 10350-81.

(Revised edition, Rev. No. 4).

4.5. Felt and felt parts should be stored in a dry, ventilated area. The height of the stack when laying the felt should not exceed 2 m.

For air access, the base of the stack must be at least 0.2 m above the floor level of the room.

Felt parts should be stored in boxes or on racks in order to protect them from deformation.

4.6. Felt and felt parts should be treated with an anti-grinding preparation at least once every 5 months.

5. MANUFACTURER WARRANTY

5.1. Felt and felt parts must be accepted by the technical control of the manufacturer. The manufacturer shall ensure that the quality of felt and felt parts conforms to the requirements of this standard.

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry light industry the USSR

DEVELOPERS:

A. I. Zhirnova, 3. S. Pervukhina, E. M. Kudinova, N. V. Polovin-

2. APPROVED AND INTRODUCED BY Decree of the State Committee for Standards of the Council of Ministers of the USSR dated August 13, 1971 N° 1453

3. Periodicity of inspection - 5 years

4. REPLACE GOST 6308-61

5. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

6. The validity period was extended until 07/01/93 by the Decree of the USSR State Committee for Standardization dated 12/24/87 No. 5003

7. REPUBLICATION (May 1990) with Amendments No. 1, 2, 3, 4, approved in September 1978, March 1983, August 1985, December 1987 (IUS 8-78, 6-83 , 11-85, 4-88)

Editor M E Iskandaryach Technical editor L V Snitsarchuk Proofreader G. I. Chuiko

Handed over in emb. 05 06 90 Preparing for printing. 10 08.90 1.0 uel p. d I,® uel kr -ott 0.98 uch ed. l.

Circulation 25000 Price 20 kopecks

Order "Badge of Honor" Standards Publishing House, 123557, Moscow, GSP,

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