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| FAQ's |
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- F.A.Q: PTFE Seals
- PTFE seals are assembled, made-to-order radial shaft seals based on PTFE (polytetrafluroethylene or Teflon. Teflon is a registered trademark of E.I. DuPont).
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- 7. What are the shaft requirements for PTFE seals? - Top
- PTFE (“Teflon”) lip seals are usually more aggressive and abrasive to the shaft than standard elastomeric lip seals; therefore, they require a hardened sealing surface. For best results, SKF generally recommends a shaft hardness of 55 to 65 Rockwell C scale. A surface finish of 8 to16 min (micro-inch) with a machine lead angle less than 0±0.05 degrees is recommended. The
final surface finish should be achieved by using the plunge ground finishing method.
- Updated: April 24, 2003
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