A union O-ring helps seal a compatible union connection so the fitting can hold properly when assembled, and this Lingxiao LX Pumps version is designed for 2 inch union applications using the LXORING2 reference. When a union seal becomes flattened, brittle, or damaged, the fitting can lose the sealing support it should maintain.The union-specific design gives this part practical value because union fittings depend on the right seal shape and size to work correctly without over-tightening or leakage concerns. A properly selected replacement O-ring helps support cleaner union assembly and contributes to more dependable plumbing performance.This type of part is especially useful during routine pump or plumbing service when a union is opened and the original seal shows signs of wear. That helps keep reassembly more dependable without replacing the full union body.Installed in the proper application, this union O-ring helps support dependable sealing and cleaner overall plumbing service. Union O-ring for compatible 2 inch Lingxiao LX pump union applications Helps seal the union connection during assembly Useful when replacing a worn or flattened union seal Supports cleaner plumbing reassembly and maintenance Improves fit confidence and sealing reliability