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• O-ring Sealing Rules O-rings are bi-directional seals, round in form and cross part. O-rings are typically made of an elastomeric materials, howevercould also bemade fromdifferentsuppliesequivalent to PTFE or metallic. An O-ring seals by way of the deformation of the seal materials by set up and media strain to shut off the hole between mating parts. Increased system pressures can  trigger deformation by way of the hole, generally known as extrusion, leading to seal failure. Selecting a tougher seal materials or putting in back-up rings to assist the O-ring might alleviate this downside. Technique of operation O-Rings are double-acting sealingelements. The inital squeeze,which acts in aradialora xial pathrelying on the set up, provides the O-Ring its preliminary sealing functionality.These forces are superimposed by the system strain to create the overall sealing power which will increasebecause the systeme strainwill increase (Determine 2). Underneathstrain, the O-Ring behaves in asimilar option to a fluid with excessivefloorrigidity. The strain is transmitted uniformly to all instructions. EPDM (Ethylene-Propylene-Diene Monomer O-Ring): EPDM O-ring in auto elements, hygiene provides, medical tools, marine tools, petroleum tools, telecommunications tools, instrumentation, equipment and different industrial fields are extensively used. Use temperature vary: -50 to 150 °C

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