O.S. Engine OS29122540 Silencer Gasket O-Ring for RC Silencer Assemblies  [OS29122540]

Silencer gasket purpose and fitment

This O.S. Engine OS29122540 silencer gasket o-ring is an RC-scale replacement seal designed for use in silencer/muffler assemblies on nitro RC engines. It serves as the main sealing element between the silencer and engine or between silencer components, stopping exhaust leaks that can upset idle and throttle response.

Installation is straightforward for hobbyists: remove the silencer, clean the mating faces of carbon and residue, place the o-ring into the gasket groove or mating face, and reassemble using the original fasteners. Make sure the mating surfaces are free of debris and that the o-ring sits untwisted to ensure an even seal.

Tuning and maintenance notes: a flattened or damaged o-ring will allow exhaust blow-by, which can cause unstable idle, poorer throttle response, and inconsistent needle settings. Replacing the gasket o-ring as part of scheduled engine servicing helps keep exhaust back-pressure consistent and preserves predictable engine behavior during runs.

Packing includes

• 1 pcs silencer gasket o-ring.