Vespel SP211 - Need a lower coefficient of friction than SP-21?  Not as concerned about thermal and wear resistance?  Then SP-211 could be your solution.  With Teflon PTFE as an additive, the coefficient of friction is further reduced, even without lubrication.

Lowest coefficient-of-friction parts in both dry and lubricated applications such as:

Sliding and linear bearings
Bushings
Thrust washers
Seal rings

Benefits

Low wear at high bearing PVs
Low coefficient of friction
Teflon filled
Superior unlubricated wear
Excellent creep resistance
Wear resistant up to 300 F
Good tensile strength, elongation and flexural modulus