... is smooth and clean,2.The rough degree of the rubber surface is3.23.The metals an outward appearance ... to press GB1184 IT14Gread5.The two layer rubbers of G noodles with each other do not glue ... ,BII610,BA6053,BII510,Silicone, chloronorgutta, CR chloronorgutta aviation rubber,foaming rubber, 08F,TPR, VMQ, NRAA712, H62Y2, PPO,abs ... .Or standard Part number. six cylinder rubber bush auto bushing