Products

Modified PTFE Gasket

Modified PTFE Gasket

SEALGOOD Modified PTFE Gasket improved performance over conventional PTFE Gasket. 1.Chemical 1.high temperature resistance than convebtional PTFE Gasket 3.Tighter Seal etc.

Model:SG-G1203

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Product Description

Modified PTFE Gasket is made from PTFE suspension resin with proper fillers such as glass fiber, glass microsphere, graphite, barium sulfate, carbon fiber, molybdenum disulfide, polyphenyl, argil etc. in process of molding or skiving sheet.Added a certain amount of filler, and the compression resistance and high temperature resistance will be  greatly improved. It is especially suitable for using as the transmission sealing parts under the condition of - 180 ℃ ~ + 260 ℃ temperature range .


Modified PTFE Gasket Application 

Mechanical Seal

Chemical anticorrosion, Chemical Process Vessel Seal

Machine tool guideways lubrication

Bridge  construction support slider 

Pipe sealing in high temperature and high corrosive condition


Specification

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

graphite-

-

62.8

9.6

38.9

12.4

self made

Carbonfiber

<0.01

16.6

12.5

60

14.8

100% PTFE

-

<0.01

81

16.7

47

25.4

Remark

 

ASTM F37

ASTM F38

ASTM F36

ASTM F152

 

Color

Yellow

Blue

white

Light Gery

Light Brown

specs

SG-G2206

SG-G2207

SG-G2208

SG-G2201

SG-G2209

Composition

Silica

Micro GlassBeads

Barium Sulfate

Glass Fiber

Kaoline

Temperature
Minimum
Cont. max.

-180℃
+260  ℃

-180℃
+260  ℃

-180  ℃
+260  ℃

-180  ℃
+260  ℃

-180  ℃
+260  ℃

Density g/cm3

2.1-2.3

1.55-1.65

2.5-2.9

2.1-2.3

2.1-2.3

Sealability cm3/s (GB/T9129-2003)

< 1 x 10-3

< 1 x 10-3

< 1 x 10-3

< 1 x 10-3

< 1 x 10-3

Creep Relaxation % ASTM F38

20

35

18

20

35

Compressibility Ratio % ASTM F36-99

>10

>16

8

10

10

Rebound Ratio % ASTM F36-99

>30

>32

30

30

30

Tensile Strength N/mm2 ASTMF 152-95

>20

>10

8

12

18

Flammability

Will not support flame


Modified PTFE Gasket Feature:

1.To improve the performance of cold flow and creep resistance: add glass fiber, glass microsphere, graphite, barium sulfate

2.To improve the performance of unctuosity : add MoS2

3.To improve the performance of heat conduction : add bronze powder, molybdenum, nickel, carbon fiber

4.To improve the performance of wear resistant property: add glass beads ,glass fiber , polyimide, polyphenyl ester

5.To improve the performance of stability and to reduce deformation: add polyphenylene sulfide,carbon fiber

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