PTFE Seal

Freudenberg-NOK introduces its friction-optimized seal featuring a combination of elastomer and polytetrafluoroethylene.

Fruedenbergnok Pfteseal 10939626

Freudenberg-NOK Sealing Technologies Simrit has developed the PTFE seal, a friction optimized seal made from a combination of elastomer/polytetrafluoroethylene (PTFE).

  • Fits in existing standard sealing grooves
  • Provides more consistent performance
  • PTFE system offers low breakaway force, improved durability and temperature resistance for dry running piston type systems such as air brakes or pneumatics
  • Coefficient of friction is around 0.1 to 0.2 in seal's natural state
  • Reduces overall friction by two times at zero pressure and three times at 10 bar 
  • Provides very low initial breakaway torque and friction, as well as high-temperature consistency 
  • Features comparable installation to that of an o-ring, including direction independence, “twist-safe” performance and gap extrusion resistance
  • Offers increased design freedom, as a variance of geometries and diameters are available to minimize friction differences even when utilizing all production tolerances
  • PTFE layer is bonded to an elastomer, which then can be bonded to a solid carrier if required, minimizing friction and improving overall comfort at gear changing in automatic transmissions
  • Eliminates stick-slip, the effects of rubber aging, the influence of temperature and the effect of hysteresis

 

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