YS Engine YSS1041 Regulator O-ring 50-Pack for Carburettor Seals  [YSS1041]

O-ring Replacement Overview

This 50-piece O-ring pack supplies spare seals for nitro RC engine fuel systems, intended to maintain regulator and carburettor interfaces on hobby models.

Replacing worn O-rings stops fuel leaks and helps keep regulator pressure steady, which improves idle stability and throttle response during tuning sessions. Change any rings that show cuts, flattening, or a hard surface to prevent fuel delivery problems.

When installing new rings, ensure each one is evenly seated and verify that moving parts operate smoothly before finishing reassembly. Store spares out of sunlight and in a dry area to preserve the elastomer life.