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

Precision O-ring for needle-valve assemblies

This YS Engine YSS2050 high speed needle socket O-ring serves as a compact replacement designed for RC needle sockets and valve fittings. It ensures consistent seating of the needle-valve and reduces the risk of fuel or pressure leakage in small engine needle assemblies.

Fitting the O-ring is simple: extract the old seal from the socket, clear any residue from the bore, lightly lubricate the new O-ring if that helps installation, and press it into its groove ensuring even seating before putting the needle-valve back together. Typical hobbyist tools are sufficient for the job.

When tuning, the O-ring maintains a stable seal without hindering minute needle movements. Swap out tired or deformed rings as part of routine checks to keep tuning feedback accurate.