説明

• O-ring Sealing Rules O-rings are bi-directional seals, round in form and cross part. O-rings are usually made of an elastomeric materials, howevercould also bemade fromdifferentsuppliesequivalent to PTFE or metallic. An O-ring seals via the deformation of the seal materials by set up and media stress to shut off the hole between mating parts. Greater system pressures can  trigger deformation via the hole, referred to as extrusion, leading to seal failure. Selecting a tougher seal materials or putting in back-up rings to assist the O-ring could alleviate this downside. Technique of operation O-Rings are double-acting sealingelements. The inital squeeze,which acts in aradialora xial courserelying on the set up, provides the O-Ring its preliminary sealing functionality.These forces are superimposed by the system stress to create the entire sealing drive which will increasebecause the systeme stresswill increase (Determine 2). Beneathstress, the O-Ring behaves in asimilar strategy to a fluid with excessivefloorrigidity. The stress 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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