This bulk supply high pressure reinforced metal skeleton seal is designed for hydraulic fitting repair shops that require stable inventory and consistent sealing performance. It features a reinforced steel core combined with high quality sealing rubber to ensure durability under extreme pressure, vibration, and continuous operation. The seal effectively prevents oil leakage in hydraulic fittings, pipe joints, and rotating shafts. It is widely used in excavators, loaders, cranes, bulldozers, and other heavy construction machinery. Its precision engineered structure improves installation accuracy and reduces maintenance rework. Suitable for wholesale and aftermarket supply chains, it helps repair shops maintain efficient operations while reducing downtime and service costs in demanding industrial environments.