Expanded PTFE Gasket (ePTFE Gasket) is a soft and conformable sealing gasket manufactured from expanded polytetrafluoroethylene. Its expanded structure combines the broad chemical resistance of PTFE with improved compressibility, allowing the gasket to conform closely to flange and equipment sealing surfaces.
JIAFUXIN manufactures expanded PTFE gaskets in ring, full-face, rectangular, and custom profiles. Inside diameter, outside diameter, thickness, bolt holes, slots, and gasket outlines can be produced according to drawings or dimensional requirements.
Expanded PTFE Gasket Specifications
| Property | Specification |
|---|---|
| Material | Expanded PTFE / ePTFE |
| Color | White |
| Product Type | Flat Gasket / Flange Gasket |
| Shape | Ring / Full Face / Square / Rectangular / Custom |
| Inside Diameter (ID) | Standard & Custom |
| Outside Diameter (OD) | Standard & Custom |
| Thickness | Standard & Custom |
| Bolt Holes | Custom |
| Slots / Cutouts | Available |
| Flange Profile | Standard & Custom |
| Custom Drawing | Available |
| Sample-Based Production | Available |
Product Features
- Excellent resistance to a broad range of corrosive chemicals
- Soft and compressible ePTFE structure
- Conforms well to flange sealing surfaces
- Suitable for static sealing applications
- Low moisture absorption
- Non-metallic sealing surface
- Available in ring and full-face designs
- Custom bolt-hole patterns available
- Irregular gasket profiles can be produced to drawing
Ring and Full-Face ePTFE Gaskets
JIAFUXIN manufactures different Expanded PTFE Gasket configurations according to flange and equipment designs.
Ring Gasket
Ring-style gaskets are normally specified by:
ID × OD × Thickness
They are used between mating sealing surfaces where a simple annular gasket profile is required.
Full-Face Gasket
Full-Face Expanded PTFE Gaskets extend across the flange face and include bolt holes corresponding to the flange pattern.
Custom dimensions include:
- Inside diameter
- Outside diameter
- Thickness
- Bolt-hole diameter
- Bolt circle diameter
- Number of bolt holes
Custom-Shaped Gasket
Square, rectangular, oval, multi-hole, and irregular ePTFE gasket profiles can be manufactured according to equipment drawings.
Typical Applications
Expanded PTFE gaskets are used for static sealing in:
- Pipe flanges
- Pumps
- Valves
- Chemical tanks
- Process vessels
- Filter housings
- Chemical-processing equipment
- Fluid-handling systems
- Laboratory equipment
- Pharmaceutical equipment
- Semiconductor process equipment
For chemical service, gasket suitability should be confirmed according to the actual process medium, concentration, temperature, pressure, and flange conditions.
