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Pure PTFE Gasket
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Pure PTFE Gasket

Pure PTFE gasket made by cutting PTFE stick,pipe and sheet into flat shape PTFE gasket,v shape PTFE gasket or valve annulus PTFE gasket,it has 100% PTFE structure.

Model:SG-G1201

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Product Description

Pure PTFE gasket made by cutting PTFE stick,pipe and sheet into flat shape PTFE gasket,v shape PTFE gasket or valve annulus PTFE gasket,it has 100% PTFE structure. It can bear the most bitter chemical medium, and PTFE gasket has good anti-creeping performance.PTFE gasket is a replacement of asbestos,and it is anti-creeping,anti-cold-flow and anti-low-temperature.PTFE gasket has no pollution and is easy to install and replace. Under small pre-tress force, it can bear great internal pressure even in a environment of changing pressure. It is the best suit the condition with rough and fragile flange and alternately-changing temperature.

With good mechanical strength ,PTFE can be made into different shapes of PTFE products or other metal products ,such as PTFE envelope gasket, spiral wound gasket, metal corrugated gasket or metal serrated gasket.


Application

Applied to the various industry in chemical, petrochemical, refining, alkali, acid, phosphate fertilizer, pharmaceutical, pesticide, chemical fiber, dye, coking, coal gas, organic compound, non-ferrous smelting, steel, atomic energy and high purity products , viscous material transportation and operation, highly strict health food production and so on.


Specification:

 

Item

Unit

Value

Density

㎏/cm3

2.10-2.30

Crystallinity

%

Resin 93~97     
 Quenching products 50~65  
 Non-Quenching products 63~85

Temperature

-180~260

Melting point

327

Distortion temperature

55

Vicat softening point

 

110

Thermal-decomposition temperature

>415

Linear expansion coefficient

1/℃

 20~60℃  10.3×10-5 
20~100℃ 10.5×10-5
20~150℃ 11.4×10-5
20~200℃ 12.8×10-5

Thermal conductivity

W/m.K

0.256

Poisson's ratio(25℃)

 

0.40

Refractive index

%

1.37

Bibulous rate

 

<0.01

Contact angle to water

 

114°-115°

Surface tension

N/Cm

18.5×10-5

Permittivity

(10H2)

≤1.8-2.2

Volume resistivity

Ωm

≥1×1015

Surface resistivity

Ω

>1010

Arc resistance

s

≥300

Tensile strength

MPa

27.6

Elongation at break point

%

238

Compressive modulus of elasticity

 

MPa

280

Compressive strength 5%

MPa

12.9

Impact strength(gap)

KJ/m2

2.0

Bending strength

MPa

20.7

Flexural Modulus of Elasticity

MPa

700

Friction coefficient

(Load 2MPa)

(Time 30mm)

0.11

Friction coefficient

mg

249

Wear scar width

mm

15.8

OuterDiameter Size

mm

≤ 2000

 

Feature:

Good insulation performance and outstanding ageing resistance

Chemical resistant, acid and alkali resistant
Non-viscous and easy to install and replace
High mechanical strength, good turning performance  and easy to process into various sealing products.

Clean products and can be used in food, medicine and other sealing parts which is not polluted

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