PTFE Gaskets

PTFE gaskets are flat or enveloped static seals cut or moulded from chemically resistant fluoropolymer. They isolate process fluids at flanges and equipment joints where many elastomers are unsuitable, while filler, thickness, compressibility and joint design influence creep resistance and sealing behaviour.

Key facts

Family: O-Rings & Static Seals
Common types: Virgin PTFE ring, Filled PTFE gasket, Full-face gasket, Envelope gasket, Restructured PTFE sheet gasket
Materials: Virgin PTFE, Glass-filled PTFE, Carbon-filled PTFE, Silica-filled PTFE, Barium sulphate-filled PTFE
Used in: Chemical piping, Reactor vessels, Pharmaceutical equipment, Acid handling, Process pumps

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Types

Virgin PTFE ring
Filled PTFE gasket
Full-face gasket
Envelope gasket
Restructured PTFE sheet gasket

Materials

Applications

Chemical piping
Reactor vessels
Pharmaceutical equipment
Acid handling
Process pumps

What to send for a quote

flange standard
inside and outside diameters
thickness
PTFE grade
process fluid

Questions about ptfe gaskets

What should I send to identify ptfe gaskets?

Send flange standard, inside and outside diameters, thickness, PTFE grade, process fluid. Provide the flange class and facing style because nominal pipe size alone does not define gasket dimensions. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select ptfe gaskets?

Match virgin, filled or enveloped construction to chemical compatibility, flange loading, surface condition and resistance to creep. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08