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The KB21 profile is a symmetrical sharp-lipped O-Ring energised U-Cup seal and is commonly used in the hydraulic repair market as it can function in both rod and piston applications.

The O-Ring energiser in this seal provides further sealing force across the sealing lips to ensure leak free performance even at low or zero pressure.

This profile can be provided in any of our high-performance materials, talk to our technical department about the best choice for your application.