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Product name

Expanded PTFE Sheet

Serial number
SG-S3202
Affiliate classification
没有此类产品
Product description

Description

Expanded PTFE gasket sheet is made of 100% expanded P.T.F.E. by using special process that produces a uniform and highly fibrillated microstructure with a great lot of fibers running in multi direction. These create a soft and pliable, yet very tough gasket that has excellent resistance of pressing, creep relaxation and cold flow.

Expanded PTFE sheet possesses universal resistance against common chemicals, except melted alkali metal, fluorine at liquid and gas states. It can be stored without any time limits and can seal uneven and damaged flanges

Application

Expanded PTFE Sheet is a high performance sheet gasket material made of multi-directionally expanded virgin PTFE. It is a soft, form-in-place gasket material that conforms to almost any sealing surface. It is capable of withstanding a wide range of pressure, temperature and chemical environments. Due to its highly fibrillated microstructure, it has excellent creep resistance compared with other PTFE products.

Typical Application

> Distilleries, petrochemical, food and beverage, pharmaceutical, general chemical, power generation, iron and steel manufacturing, pulp and paper, etc.

Specification

Physical Properties of expanded PTFE sheets

ITEM

Standard

Value

PH

-

0~14

Temperature

-

-240~260°C

Recovery

JB/T10688-2006  >10%

15%

Compressibility

JB/T10688-2006  40%~50%

45%

Creep

-

14%

Compressive Strength

-

17.0MPa

Tensile Strength

-

15Mpa

Leakage rate

JB/T10688-2006  <0.1x10-3

0.1~0.2x 10-4 cm³/s

Density

0.7~0.85g/cm³

0.85g/cm³

 

Thickness (mm)

Tolerance  (mm)

Size  (mm)

Tolerance  (mm)

0.5

±0.10

1500X1500

±10

1.0

±0.15

1.5

±0.20

2.0

±0.20

3.0

±0.30

4.0

±0.30

5.0

±0.30

6.0

±0.30

Specification of different modified PTFE sheet

PRODUCT

FILLER

airtightness,,L/min

creep

relaxation

,%

compressibility,%

 compressional resilience,%

tensile strength,MPa

Garlock

GYLON 3504

Glass

beads

<0.015

40

25-45

30

14

GYLON 3510

 barium sulfate

<0.015

11

4-10

40

14

Flexitallic

SIGMA 500

Glass

beads

<0.1

31

35

44

14

SIGMA 511

silicon

dioxide

<0.1

35

7

44

16

Durlon

9200W

barium

sulfate

0.01

30

8-16

35

13.2

9400

 carbon fiber

0.01

30

5-12

40

14.5

VALQUA

7020 

ceramic fiber

-

48

4.6

59

15.2

7026

carbon

fiber

-

49

4.5

73

26.5

Sealgood

ceramic fiber

<0.1

78

6

49

15.7

B

Glass

beads

0.25

74

21.4

33.9

12.3

-

-

62.8

9.6

38.9

12.4

self made

ceramic fiber

<0.01

16.6

12.5

60

14.8

Ordinary PTFE

-

<0.01

81

16.7

47

25.4

remark

 

ASTM F37

ASTM F38

ASTM F36

ASTM F152

 

Feature

1.Made of 100% multi-directional fiber PTFE

2.Clean and no toxic, soft and flexible

3.Reduced creep relaxation,chemical resistant
4.Cost saving;easy cut into gasket

5.Acid and alkali resistant
6.Non-viscous, no aging

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