POLINI 285.0007 crankshaft oil seal overhaul kit PTFE/FKM 15 X 24 X 5 for minimoto

POLINI 285.0007 crankshaft oil seal overhaul kit PTFE/FKM 15 X 24 X 5 for minibikes POLINI OIL SEALS IN FKM PLUS PTFE: PERFECT SEAL Polini has created a series of sealing rings (oil seals) for the most popular moped and scooter models on the market. Perfectly interchangeable with the original ones, they can be mounted both on the crankshaft and on the primary shafts of CVT transmissions. Made of FKM (fluorocarbon rubber) to withstand the highest thermal stress, they have a sealing lip coated in PTFE (polytetrafluoroethylene); this feature, in addition to making them more durable than standard sealing rings, means that they have a significantly lower friction coefficient, thus ensuring less dispersion due to friction and at the same time maintaining lower temperatures. These sealing rings have been designed for racing engines but they also adapt perfectly to standard engines without power kits where, due to the low power available, the reduction in friction allows for higher rotation speeds to be reached. TECHNICAL CHARACTERISTICS FKM body. Steel metal armor. Inner lip coated in PTFE with very low friction coefficient