The FAAC 7090350025 O-ring is a precision sealing component specifically designed for the front flange in FAAC 402 and 422 hydraulic swing gate operators. Engineered to deliver a secure and leak-proof seal, this O-ring maintains proper hydraulic pressure and ensures consistent system performance. Manufactured from high-quality elastomer materials, it offers excellent resistance to wear, pressure, temperature variations, and exposure to hydraulic fluids. With exact dimensions of 34.6 mm inner diameter and 2.62 mm thickness, it guarantees a precise fit and reliable sealing in demanding applications. This genuine FAAC replacement part is essential for maintenance, repairs, and extending the lifespan of hydraulic gate systems.