1. LSB produce o-ring,x-ring.rubber parts.oil seal ,seal. 2. Any colour and size are accept. 3. TS16949,NSF, ... , Rubber Tensile Machine, Rotary Oil Seal Test Bed, Rubber Brittle Low-Temperature Test Bed, Aging Test, Thickness Meter, Shore-A Hardness Tester ... , Rubber Tensile Machine, Rotary Oil Seal Test Bed,Rubber Brittle Low-Temperature Test Bed, Aging Test, Thickness Meter, Shore-A Hardness Tester ...