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

High-speed needle socket O-ring for RC engines

This YS Engine YSS2050 high speed needle socket O-ring is a compact replacement part intended for RC-scale needle sockets and valve fittings. It serves as a sealing component to maintain consistent needle-valve seating and to prevent fuel or pressure leakage in needle assemblies used on model engines.

Installation is straightforward: remove the old O-ring from the needle socket, verify the socket bore is clean of debris, lightly lubricate the new O-ring if needed, and seat it evenly in the groove before reassembling the needle-valve. No specialized tools are required beyond basic disassembly implements common in RC maintenance.

In tuning work the O-ring's role is to preserve a reliable seal while allowing fine needle adjustments. Replace worn or flattened rings as part of routine maintenance to keep needle response consistent during tuning sessions.