... ,SGS,ROHS Lead time:30 Day transparent black and blue o ring 1)Applicable material:Silicone, ... PE,PP,PS,POM,PUR,PVC,PPTV,HIPS,ABS,EPE,EVA etc.,with hardness between 30-90 ... Cover O-RingInjector Diffusers O-ringsFront Hub Bolt O-RingFront Main SealRear Main Seal (The rear main seal may change color with ... help you modify your enigine for race tolerances and performance. transparent black and blue o ring