Expanded PTFE Gasket is made by expanding PTFE; it is expanded through a unique process into a microstructure that enhances its compressibility, flexibility, and resistance to harsh conditions.
It is suitable for use in steel flanges and flanges where a highly compressible gasket is required. And it’s also ideal for sealing flanges with irregular surfaces. It will not exhibit the cold flow problems associated with virgin PTFE or the hardness problems of some other filled PTFE products. With the feature of excellent sealability, cuts easily, and separates cleanly from flanges after use, the flexibility of the expanded PTFE gasket’s unique material allows it to fit any flange shape.
| PROPERTY | STANDARD | VALUE |
| Color | – | White |
| Density | ASTM D792 | 0.75-0.95g/cm3 |
| Operating temperatures | – | -286 – 320°C |
| Compressibility | ASTM F36 | 45 % |
| Recovery | ASTM F36 | 12 -13% |
| Creep Relaxation | ASTM F38 | 35 – 36 % |
| Sealability (Nitrogen) | ASTM F 37B | 0.15 ml / hr |
| Sealability (Fuel A) | ASTM F 37B | 0.02 ml / hr |
| Service Pressure | – | Full Vaccum to 19 MPa |
| Tensile Strength Both directions | ASTM D638 | 19.6 MPa |
A wide range of applications for all types of flanges, especially for fragile flanges and uneven flange seals.
Superior Chemical resistance, highly compressible and conformable, and extreme temperature tolerance.
Long using life – reduce changing gasket period – cut cost
Non-stick and easy-to-install gaskets, a used gasket replaced easily
Sizes from 1/2” – 24” available, Custom sizes and shapes on request
FDA approved and safe for food, medical, and pharmaceutical applications
Expanded PTFE gaskets can be used as a sealing part of most flange joints in all industries, especially suitable for special flange sealing needs such as complicated geometry, uneven flange surface, glass enamel, compressors, manhole gaskets, etc. and ePTFE gaskets provide exceptional performance in any industry, such as Chemical, petrochemical, oil refining, offshore oil and gas, aerospace, automotive, mining, aircraft manufacturing, food, pharmaceutical etc typical industries.
