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: (1) the o-ring is compressed resulting in zero clearance, (2) the o-ring material is vulcanised solid such that it is impermeable to the fluid or gas, and (3) 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. CBC is Australia’s largest distributor of o-rings. We stock Australia’s biggest range of o-rings from world-leading suppliers such as KOK, Marlin, NAK, Seal Innovations and Dichtomatik. Whatever you need, you can trust us to meet your requirements. Contact us today to find out about out o-ring range.