PTFE - Polytetrafluoroethylene

PTFE - Polytetrafluoroethylene

Characteristics

Virgin PTFE has the smallest friction coefficient. It also has an almost universal chemical compatibility, and a very wide temperature range (either low or high temperature, from -200°C up to +250°C).

However, it has a poor wear resistance and creeps under load. To overcome these problems, Techné proposes PTFE charged with bronze, carbon, glass, graphite, MoS2, etc.

PTFE-Properties-Radar-Graphic-Techne

Uses

PTFE is often machined to make back up rings.

When PTFE is part of a sealing system, it is often associated with a rubber expander (or a metal spring) to give it a better elasticity. Virgin PTFE is FDA and/or USP class VI approved.

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