High-quality radial shaft seal for the crankshaft of various Vespa PX, Cosa. The seal is made from heat-resistant and oil-resistant FKM and measures 31x62.1x4.3x5.8mm dimensions. Note: If there is no groove in the sealing ring, this new version (derived from PK engines) can be installed in older GTR / Sprint / Rally engines which use a fully rubberised factory gasket. For comparison purposes Piaggio / Vespa OEM numbers: 242550, 112156, B015668
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.
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.
