Buna O-Rings

Posted by PandaGeneral on April 18th, 2019

O-Ring Sizes for Industrial Applications

From machine design to applications in household appliances, the use of the o-ring is practically indispensable. Availability of o-rings comes in the form of metric as well as inch sizes.

Industrial applications of o-rings

A precisely engineered mechanical mounting is essential for the successful use of o-rings in joint design. Such a mounting must take into consideration the deformation of the o-ring. The amount of stress, which is mechanical in nature, should be of a precisely calculated amount at the o-ring contacting surface with the mounting. In principle, the fluid pressure that is been contained must not be greater than the stress that is imposed on the o-ring. As such, leakage in the component will not happen. And because the o-ring material is virtually incompressible, the pressure of the fluid that is being contained is transferred and the pressure at the interface increases as the operating pressure goes up. The specification of o-ring sizes is by means of the inner diameter as well as the thickness, otherwise known as the cross section diameter. As long as the o-ring does not fail in a mechanical way, the sealing of high pressure fluid can be done effectively. The usual mode of sealing failure is at the interface of the adjoining parts.