o-戒指

o-ring/sealing ring/silicone o-ring1. Material: silicone, rubber2. Non-toxic, odourless, high/low temperature resistantance, oil resistantance, waterproof, dustproof, sealing, corrosion resistance, high pressure resistance, anti-abrasion An o-ring, known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc-shaped cross-section, designed to be seated in a groove and compressedduring assembly between two or more parts, creating a seal at the interface. The o-ringis used in static applications or in dynamic applications where there is relative motion between the parts and the o-ring. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons. o-rings are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable, and have simple mounting requirements. They can seal tens of megapascals ( thousands of psi ) pressure.