The retaining ring of Forging Co., Ltd. is mainly used for axial fixation of parts on the shaft. The material of the retaining ring is 65Mn 60Si2MnA; the heat treatment of the retaining ring: d≦48, quenched and tempered HRC, 47-54 or HV470-580 , greater than 48, quenched and tempered HRC44-51 or HV435-530, the retaining ring needs to be elastically tested to meet the performance requirements of the product; install the retaining ring on the test shaft and keep it for 48 hours without breaking for toughness testing. For the retaining ring Specification design selection, if you want to add a polytetrafluoroethylene back-up ring to the static seal O-ring groove of the high-pressure oil cylinder, in general, the height of the back-up ring should be consistent with the depth of the groove, and the thickness of the back-up ring is 1~2mm, which can be extruded The situation determines itself. The radius of curvature of the groove is 0.8~1.6 times the diameter of the O-ring. Depending on the amount of compression, the fillet is less than 0.2.