An O-ring, also 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 round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.
The O-ring may be 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. Static applications of O-rings may include fluid or gas sealing applications in which: the O-ring is compressed resulting in zero clearance, the O-ring material is vulcanized solid such that it is impermeable to the fluid or gas, and the O-ring material is resistant to degradation by the fluid or gas.
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 have been tested to seal up to 5000 psi (35 megapascals) of pressure. The maximum recommended pressure of an O-ring seal depends on the seal hardness and gland clearance.
|Available Color||Black, white,transparent,blue, brown.|
|Material Strength||O ring in encapsulated PTFE and FKM type, has good resistance to swelling and chemical stability.
in Virgin PTFE material, has excellent chemical stability, anti-aging, and very low friction coefficient.
ring in NBR material, resistant to mineral oil and good wear resistance.
O ring in FKM material, has a strong
heat resistance, excellent oil resistance and chemical resistance.
O ring in SILICONE material, has excellent
heat resistance and cold resistance.
|medium||Flame retardant oil, water, hydraulic oil, gas|
|Applied device||Hydraulic equipment / standard cylinder / machine tool / injection machine / hydraulic machine, etc.|