... ,POM,PUR,PVC,PPTV,HIPS,ABS,EPE,EVA etc.,with hardness between 30-90 shore A.2)performance:Good ... to customize your products upon your requirements. 8)Available in various sizes and colors9).We have experience R&D ... Main Seal (The rear main seal may change color with out notice)Crank Angle Sensor O-RingFACTORY Tension Bolt Seals ... enigine for race tolerances and performance. o ring manufacturer in China