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Expanded PTFE, Expanded PTFE Sheet, Teflon Sheet manufacturer / supplier in China, offering Expanded PTFE Sheet for Gasket Material, Glass Fiber Yarn Withh High Pressure Air (HY-G620), acrylic Fiber Packing and so on.

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Expanded PTFE Sheet for Gasket Material

FOB Price: US $1 / Square Meter
Min. Order: 1 Square Meter
Min. Order FOB Price
1 Square Meter US $1/ Square Meter
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Port: Ningbo, China
Production Capacity: 100000PCS/Year
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: HY-P300
  • Kind: Engineering Plastic Sheet
  • Contraction Percentage: 0.4%~1.4%
  • Color: White
  • Temperature: -450f (-268c)~600f (315c)
  • ASTM Line Call out: ASTM F 104
  • Transport Package: Carton Box
  • Origin: Ningbo China
  • Material: PTFE
  • Water Absorption: 0.1%~0.3%
  • Size: 60"X60"
  • pH: 0-14
  • Thicknesses: 1/32", 1/16", 3/32", 1/8", 3/16", 1/4"
  • Trademark: Hysealing Co., LTD
  • Specification: SGS
  • HS Code: 39209910
Product Description
This year we moved our factory to a new big plant. And recently we produce ePTFE sheet by ourselves in our new workshop. The ePTFE sheet we produced has the same quality compared with Gore but with much better price!!! And we can brand your own marks on the sheet!

Now we are having a big sell about expanded PTFE sheet,the price is very very good. Welcome to your enquiry!
Expanded PTFE Sheet for Gasket Material
Expanded PTFE Sheet for Gasket Material

P300 is a Universal sheet gasket material for most services. Seals rough and irregular surfaces.  Made from biaxial oriented expanded PTFE sheeting that is laminated to the required thickness.  Seals of up to 3000+psi can be achieved depending on the flange type & design and type of media being sealed.  Chemically resistant over the Q-14 pH range.  Specific gravity: 4 to 6.  Suitable for temperatures to 600F.
Our P300 gasket sheet is manufactured by expanding 100% virgin PTFE using a proprietary process that produces a uniform and highly fibrillated microstructure with equal tensile strength in all directions. The resulting product exhibits characteristics significantly different than conventional PTFE sheet.P300 is much softer and more flexible than regular PTFE sheet and thus conforms easily to irregular and rough surfaces. In addition, the material is easier to compress and minimizes creep and cold flow. 
Our P300 is an all purpose gasket sheet that can replace all other types of PTFE sheet. It will seal all aggressive chemicals over the entire 0-14 pH range except for molten alkali metals and elemental fluorine. Made from 100% virgin PTFE, Our P300E not only resists chemical attack, but it will not contaminate or discolor end products. These industries currently use expanded PTFE sheet:



 Food and Beverage


 General Chemical

 Power generation

 Iron and Steel Manufacturing

 Pulp and paper





Temperature Limits:



-450°F (-268°C)


600°F (315°C)


0-14 (except molten alkali metals and elemental fluorine)

ASTM Line Call Out

ASTM F 104



Available Sheet Sizes



1/32", 1/16", 3/32", 1/8", 3/16", 1/4"

Sheet Size

60" x 60"






F 37

ASTM Fuel A (isoctane):
Gasket load, 500 psi (3.5 N/mm2)
Internal Pressure, 9.8 psi (.7 bar)
Gasket Load, 500 psi (20.7N/mm2)

0.0 ml/hr
.16 ml/hr

F 36



F 36



F 38

Creep Relaxation

32% at 212°F
16% at 73°F

F 495

Ignition Loss


F 146

Weight Incease After
Five Hour Immersion
ASTM Oil #1 @ +300°F (+150°C)
ASTM Fuel IRM 903 @ + 300°F (+150°C)
ASTM Fuel A @ + 70-85°F (+21-29°C)
ASTM Fuel B @ + 70-85°F (+21-29°C)


F 146

Thickness Incease After
Five Hour Immersion
ASTM Oil #1 @ +300°F (+150°C)
ASTM Fuel IRM 903 @ + 300°F (+150°C)
ASTM Fuel A @ + 70-85°F (+21-29°C)
ASTM Fuel B @ + 70-85°F (+21-29°C)


F 152

Tensile Strength Across Grain

1/16" thick - 1600 psi
(11 N/mm2)
1/16" thick - 1600 psi
(11 N/mm2)

DIN 3535
Part 4

Gas Permeability
Internal pressure: 580 psi (40 bar)
Gasket Load: 4640 psi (32 N/mm2)




53 lb/ft3
(0.85 gm/cc)

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