O.S. Engine OS27981850 O-Ring Spare Kit 60B — Seal Replacements for RC Engines  [OS27981850]

Replacement seals for glow and gas engines

This O.S. Engine O-Ring Set 60B supplies replacement seals aimed at routine maintenance and roadside repairs. The set targets the typical sealing areas around fuel and pressure joints and is a practical spare to include in your service kit for hobby engines.

Fitting tips: inspect parts for grit, roll each o-ring into place without twisting, and ensure mating components line up before tightening. A small smear of suitable lubricant on the seal or bore makes installation smoother and helps prevent pinching; do not use harsh chemicals that can compromise the material.

From a tuning standpoint, fresh seals help maintain compression and stop minor leaks that can upset idle and throttle response. Keeping spare o-rings handy lets you swap them quickly during sessions and keep the engine running reliably.