Glossary for Seals, Gaskets, O-Rings, Orings, Rubber.
Includes the terms and definitions for seals, seal, orings, gasket, gaskets, hydraulic seals, hydraulic seal, metric seals, metric seal, o-rings, o-ring, viton, teflon, silicone, rubber, nitrile, ucup, plastic, metric orings, injection molding, oil seals, packings, parts, molding, machining.

This is perhaps the most comprehensive glossary of seal, gasket, packing and molded rubber parts terms available on the internet.

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"U"

U-Cup - a type of seal used in a hydraulic or pneumatic cylinder. It's cross section is U-shaped to allow oil to energize the seal body to properly block oils and seal correctly.

U-cups - A "U" shape cup sealing ring designed to seal in one direction along a shaft or rod in a hydraulic or pneumatic cylinder.

Undercure - Degree of cure less titan optimum. May be evidenced by tackiness, loginess (lack of snap or resilience), or inferior physical properties.

Ultimate Elongation - The maxi- mum elongation prior to rupture.

Undercure - State of vulcanization less than optimum. It may be evidenced by tackiness or inferior physical properties.

U-Packings - A "U" shape cup sealing ring designed to seal in one direction along a shaft or rod in a hydraulic or pneumatic cylinder.

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