Rubber Oil Ring 1. Quality certificate: ROHS. 2. Materials: NBR, NR, FPM...etc 3. Use for all machines,size:50-630 O RING MATERIAL ... good heat resistance,antoxidation,no permeation,acid resistance,alkali resistance. Rubber Oil Ring1. Unit price: depends on the material and the ... , Armarium,Toy etc10.Lead time of goods:1-2weeks for 10000pcs.11.Package:Standard export packing:PVC bag,Carton,Pallet12 ...