The SPI seal 26x37x7 mm is a critical component for the proper operation of the 2-time cycle of TMKART engines. Generally placed at the crankshaft, its role is to ensure a perfect seal between the interior of the housing (under pressure / depression) and the outside.

• Prevention of air intakes: Prevents outside air from entering the bottom-motor, which would distort the carburation and might cause tightening.

• Confinement of lubrication: Retains the air / oil mixture inside the engine to ensure the lubrication of crankshaft bearings.

• Fluoré Material (Viton / FKM): Designed to withstand high temperatures generated by the crankshaft rotation and chemical aggressions of competition fuels.