... by customers' specificatiom Name Rubber seal Classification O ring,rubber gasket,,rubber seal strip Material Silicone rubber,,EPDM,NR,SBR,VBR ... you want CharacteristicWater-tight or oil-tight hollow rubber sealSpecial chemical mediumhigh intensity and good tension strengthelongation ... and other industry,good function of sealing and attenuating shock,auto parts Certification ISO9001:2000,SGS passed, Our ...