The FAAC 7090280015 O-ring is a high-quality sealing component specifically designed for the retract tube in FAAC 422 short stroke and older FAAC 400 hydraulic operators. Engineered to provide a precise and secure seal, this O-ring helps maintain proper hydraulic pressure while preventing fluid leaks that could compromise system performance. Manufactured from durable elastomer materials, it offers excellent resistance to wear, temperature fluctuations, and hydraulic oils. With exact dimensions of 94.5 mm inner diameter and 1.78 mm thickness, it ensures a perfect fit for reliable operation. This genuine FAAC replacement part is essential for maintenance, repair, and extending the lifespan of automatic gate systems.