O.S. Engine OS23715000 Carburetor Seal Gasket O-Ring S-15 20K,21D,21VZ-R  [OS23715000]

Carburetor O-ring for RC engines

This O-ring gasket is a compact replacement part designed for RC-scale engine carburettors listed in the product name. It serves as a sealed interface between carburettor components to help prevent fuel seepage and preserve consistent fuel metering in model engines.

Compatibility is limited to the model codes referenced in the product name, so verify the carburettor code on your RC engine before ordering. The part is supplied as a spare sealing element to be fitted into existing carburettor housings, not as a complete carburettor assembly.

For fitment, remove the carburettor from the engine or mount as needed, inspect mating surfaces for dirt or damage, replace the old O-ring with the new seal, and reassemble carefully to avoid pinching the O-ring. Proper sealing supports stable idle and reduces the chance of fuel leakage during on-track tuning and maintenance of RC engines.