Oring seals are generally divided into two main groups Static seals, in which there is little or no relative motion between the mating surfaces;Oring failure is often caused by a combination of factors including improper installation, allowing for too much or too little compression in the gland design, inadequate lubrication, abrasion, or using an Oring seal that is the incorrect size or type of elastomer for your applicationAnd dynamic seals, which must function between surfaces with definite relative motion, such as the seal on the piston of a hydraulic cylinder Of the two types, dynamic sealing is the more difficult
O Ring Sizes And Dimensions Seal Design Inc