Replacement High Speed Needle Socket O-Ring 56SR for RC Needle Sockets - YS Engine YSS2050  [YSS2050]

Durable O-ring for needle socket sealing

This YS Engine YSS2050 high speed needle socket O-ring is a compact replacement component made for RC-scale needle sockets and valve fittings. Its main role is to preserve a reliable seal at the needle-valve interface and prevent fuel or pressure leakage in model engine needle assemblies.

To fit the O-ring, remove the old seal, ensure the socket bore is cleaned of grit and residue, lightly lubricate the new O-ring if required, and seat it uniformly in the groove before reassembling the needle-valve. No specialist equipment is necessary beyond common RC maintenance tools.

For ongoing reliability, the O-ring supports repeatable needle adjustments during tuning. Replace any O-ring that shows flattening, cracks, or loss of elasticity as part of scheduled maintenance to maintain consistent tuning results.