Back-up Rings

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Back-up Rings are non-deformable, rigid components used in conjunction with primary seals, such as O-rings, in high-pressure hydraulic and pneumatic systems. Installed adjacent to the sealing element, they prevent extrusion into clearance gaps under extreme pressure, temperature, or dynamic motion. Typically made from tough engineering plastics like PTFE, nylon, or polyimide, they enhance seal stability and extend service life by reducing wear and failure risks. These rings are critical in applications where pressure exceeds standard seal limits, such as in heavy machinery, aerospace actuators, and oil and gas equipment, ensuring reliable performance and minimizing downtime in demanding operational environments.

The Essential Role of Seals in Modern Industry

Seals are precision components designed to prevent the leakage of fluids and gases while excluding contaminants in mechanical systems. They are critical for ensuring efficiency, safety, and reliability in a vast range of applications. Common types include static seals like gaskets for stationary parts and dynamic seals like O-rings and lip seals for moving components. Made from materials such as rubber, polyurethane, PTFE, and metal, they are tailored to withstand specific pressures, temperatures, and chemical exposures. From automotive engines and hydraulic cylinders to food processing and aerospace systems, seals are indispensable in nearly every industry, protecting equipment and enhancing performance.

NBR O-Ring Kit, Brown Buna-N Seals (AS568 Standard)

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NBR O-Ring Kit, Brown Buna-N Seals (AS568 Standard)

Secure performance with precision seals

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