The Worcester Bosch 87161138510 O-ring is a genuine OEM sealing component engineered to provide a reliable, leak-proof seal within compatible Worcester Bosch Greenstar, GR, and FS series boilers. Made from durable elastomeric material, this O-ring helps prevent water or gas leakage at critical joints and connections in the hydraulic or combustion circuits, supporting system integrity and efficient boiler operation. Manufactured to original equipment standards, it offers consistent dimensions and material quality for dependable sealing performance when replacing worn or damaged seals.

This O-ring is compatible with selected Worcester Bosch Greenstar, GR, and FS boiler models that list part number 87161138510 for specific sealing applications. Because seal requirements can vary by model, assembly location, and production year, it’s recommended to verify suitability using the boiler’s exact model and GC number before ordering.

Key features of the Worcester Bosch 87161138510 O-ring include its genuine Worcester Bosch manufacture for assured quality and compatibility, precision-formed elastomeric construction to create effective seals, durable material to resist routine heating system pressures and temperatures, and straightforward fitment when installed by a qualified heating engineer to help maintain efficient, leak-free boiler performance.