o ring: 1.8H2262,1M9011,5P7145,4M0736,2M0344,3N0759 2.diameter: ... 3.NBR,VITON,FKM,silicone 4.ISO9001 factoryo ring: Our o ring are used in construction machinery and mining machinery , the ... if you have your own drawings,that's ok. Our o ring is applicable to various engineering machinery and mining machinery ... and land levelers, cranes, mixers, mining machines, etc. NBR rubber o ring