PTFE (polytetrafluoroethylene) Tri-Clamp Gaskets offer outstanding chemical inertness and thermal stability, making them ideal for harsh or aggressive process fluids. Because PTFE is highly non-reactive, these gaskets are often used in chemical processing, pharmaceutical, and specialty food applications. Some designs use an envelope configuration (PTFE shell over an elastomer core) to combine flexibility with chemical resistance
Key Features
- Compatible with USP Class VI / FDA sanitary standards in many variants
- Exceptional chemical resistance — inert to most acids, bases, solvents, and process media
- Wide temperature tolerance (e.g. –100 °F to +450 °F)
- Low friction, non-stick surface that minimizes residue adhesion
- Long service life under harsh conditions
- Available in full PTFE or PTFE-envelope/insert (hybrid) styles to balance sealability and performance
- Standard sizes to match tri-clamp flange OD ranges (½”, ¾”, 1″, 1½”, 2″, 2½”, 3″, 4″, 6″, 8″, 10″, 12″)






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