A quad ring is a type of seal that is used in mechanical applications to prevent leakage of fluids or gases. It consists of four lobes or lips, each with a sealing surface that contacts the sealing surface of the mating component, creating a tight seal. The quad ring is designed to be more effective than a traditional O-ring seal because it has twice as many sealing surfaces and can seal in both directions, meaning it can function as both a rod seal and a piston seal. Quad rings are commonly used in hydraulic and pneumatic systems, automotive applications, and other industrial settings where sealing is essential. They are typically made of elastomeric materials such as nitrile, silicone, or fluoroelastomer, which offer good chemical resistance and flexibility over a wide temperature range. #quadring #xring #xringnbr