Meaning back-up ring
What does back-up ring mean? Here you find 3 meanings of the word back-up ring. You can also add a definition of back-up ring yourself
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back-up ringA supporting ring used with an O-ring, or similar seal, to prevent extrusion of the seal material under high differential pressures or excess wear under dynamic sealing conditions.
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back-up ringA washer like device of a relatively hard material placed in the gland between the o-ring and groove side wall, also called a back up ring. Blemish: Deformity on the surface of a molded product. Brittleness: The tendency to crack when deformed. BUNA N: A general term for the copolymer butadiene and acrylonitrile also referred to as NBR or Nitril [..]
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back-up ringA fabric or plastic device that is used with an o-ring or other gasket to present extrusion of the o-ring or gasket into an adjacent space or crevice.
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