... rubber Shape: Accordint to your blueprint OEM silicone rubber gasket for bottle stopper: 1, Material:NBR,CR,HNBR,ACM, SBR,EPDM,IIR ... or according to your requirements.6, Application:electronic field, industrial machine& equipment, house-hold appliance,tele-communication, automobile, medical equipment industry ... .8, OEM or ODM is welcomed. OEM silicone rubber gasket for bottle stopper