For more than 20 years, our manufacturing facilities have specialized in expanded PTFE sheet gasket solutions that meet the toughest sealing demands in chemical, pharmaceutical, and industrial processing. The EPTFE gasket sheet for chemical sealing is produced from 100% virgin expanded polytetrafluoroethylene and delivers a tight, long-lasting seal even in aggressive acid and solvent service. For applications with uneven or fragile flange faces, our EPTFE sheet for flange sealing provides the low bolt load and high conformability that prevent flange damage and reduce installation time. The chemical resistant EPTFE gasket sheet range offers universal compatibility with acids, alkalis, solvents, and oxidizing agents, making it a preferred choice in chemical processing, food-grade, and high-purity systems. As a dependable EPTFE gasket sheet supplier, we maintain extensive inventory and provide custom cutting, full rolls, and fast global shipping to keep your maintenance schedule on track.
The expanded PTFE sheet gasket product line is engineered to seal reliably without the use of fillers, binders, or pigments. Every sheet is manufactured through a controlled expansion process that creates a multidirectional fibrous structure, giving the material excellent compressibility and recovery. This structure allows the gasket to conform to damaged, pitted, or misaligned flange faces, which reduces the need for surface preparation and lowers overall installation costs.
For sealing engineers and maintenance teams, the low creep relaxation and cold flow resistance of this expanded PTFE sheet gasket are particularly important. Under typical gasket stress of 20 to 30 MPa, the material achieves a tight seal on standard ASME B16.5 flanges, glass-lined vessels, plastic flanges, and metal piping systems. The sheet can be cut easily with standard knives or die-cutting equipment, and its non-stick surface simplifies gasket removal after service, shortening maintenance downtime. The expanded structure also minimizes creep relaxation compared to skived PTFE, which helps maintain bolt load over extended service periods. Because the material is free of binders and fillers, it does not harden or crack after thermal cycling and leaves no residue on flange faces after removal.
Key product parameters are listed below.
| Property | Test Standard | Typical Value |
|---|---|---|
| Material | Internal | 100% expanded PTFE |
| Density | ASTM F1315 | 0.8 – 1.0 g/cm³ |
| Tensile strength | ASTM F152 | ≥ 15 MPa |
| Elongation at break | ASTM F152 | ≥ 300% |
| Compressibility | ASTM F36 | 40% |
| Recovery | ASTM F36 | 15% |
| Creep relaxation | ASTM F38 | 30% |
| Maximum pressure | Internal | 55 bar |
| Continuous temperature | Internal | -268 °C to +260 °C |
| Short-term temperature | Internal | 315 °C |
| pH range | Internal | 0 – 14 |
Additional handling and installation data for this expanded PTFE sheet gasket include a recommended gasket stress of 20 – 30 MPa, bolt torque following ASME PCC-1 guidelines for the applicable flange class, and storage in a clean, dry area away from direct sunlight. Shelf life is unlimited under proper storage conditions. The sheet can be cut using a standard knife, steel rule die, or water jet. Typical applications include chemical processing, pharmaceutical manufacturing, food and beverage, pulp and paper, power generation, and water treatment. Packaging options include full rolls, flat sheets, and custom die-cut gaskets sealed in polyethylene bags to prevent contamination. The product line is also available with pressure-sensitive adhesive backing or with a colored stripe for batch traceability.
