YS Engine YSS1017 Back Plate O-Ring 50 pcs back plate seal rings for YS Engine models  [YSS1017]

Back plate O-ring pack

This YS Engine back plate O-ring pack supplies spare O-rings intended for sealing the back plate of RC glow engines at scale. The set is identified by model YSS1017 and is supplied as a bulk pack to support routine maintenance and rebuilds.

Details to note for hobby use: the O-rings are intended as engine-scale sealing rings for back plate interfaces, helping to maintain correct crankcase pressure and prevent fuel or crankcase leaks that can affect idle and throttle response. They are a basic consumable for engine upkeep rather than a tuning part that alters performance curves.

Installation guidance: inspect old O-rings for flattening or cracks before removal, lubricate replacement O-rings lightly with compatible oil before seating, and ensure the back plate mating surface is clean and free of debris to avoid pinching or premature wear.

Packing quantity is indicated in the product name as 50 pcs, intended to keep a ready supply of replacements during regular servicing.