??Hydraulic analysis of O-rings

??Hydraulic load failed O-ring, for example, load failed diameter sealing surface strain and the groove, cylinder port and flash as well as deformation, aging, cracking hydraulic O-ring. Particularly unqualified hydraulic O-ring diameter is not too large or too small, too small margin compression is not enough, but to squeeze too much loaded when assembled, will cut broken seal. So you want to check the following requirements before installing angle is introduced according to drawings whether chamfer or round sharp edges; if the inner diameter of deburring surface for contamination; whether seals and components have smearing grease or lubricating fluid (to ensure that the elastomer media compatibility, recommended to lubricate the sealed liquid) may not use grease containing solid additives such as molybdenum disulfide, zinc sulfide.

??When assembling hydraulic O-ring dislocation off after pressing is often crushed or broken cut, and deviate from the sealed position, it can not act as a seal. In addition in the horizontal direction (such as a large cylinder head) mounted at the hydraulic O-ring, O-ring due to the weight of sagging, attention must thereby causing broken seal cutting phenomenon, in order to avoid the occurrence of such phenomena can be taken butter stick O-rings and stand up assembly method. Installation of hydraulic O-ring to make use of the auxiliary hydraulic tool mounting O-ring (rubber O-ring), and to ensure correct positioning;. When the hydraulic O-ring (rubber O-ring) stretching through screws, splines when keyway, etc., you must use the installation mandrel. The mandrel can be soft, smooth metal or plastic, without burrs or sharp edges.