crankshaft oil seal kit Polini FKM/PTFE for Derbi D50B0, EBE, EBS

2 piece 20x35x7mm shaft seals for sealing the crankshaft bearings

Explanation: The difference between FPM, FKM, Viton®
Behind the abbreviations or names mentioned is the identical basic material - fluororubber. FKM is the abbreviation for fluoroelastomers according to the American ASTM standard. Viton®, on the other hand, is a trademark of the company DuPont Performance Elastomers.

In our range, all fluoro rubber articles are designated with the abbreviation FKM.