YS Engine YSS1030 50pc Needle Socket O-Rings Replacement Pack  [YSS1030]

Sealing rings for needle sockets

The YS Engine YSS1030 set supplies fifty rubber o-rings made for sealing needle sockets in RC carburettor needle assemblies. The quantity is suitable for repeated servicing and small fixes between rebuilds.

O-rings stop fuel leakage at the needle seat and help maintain a reliable needle-to-seat contact, which supports stable idle and consistent mid-range mixture response while tuning. Because fittings can vary, always confirm the correct ring size before installing and replace aged rings as part of normal engine maintenance.

Installation is simple: remove the carburettor needle assembly, slide off the worn o-ring, fit the replacement onto the needle socket, and reassemble. Check the needle and seat for signs of wear or damage and replace parts if a secure seal cannot be formed.