... 3.Used for glass bottle,pot,canister,tube, Pipe butyl rubber stopper 1. Material: 100% Food grade silicone 2. Size: ... StandardOrNonstandard:Style: Size and Color:Material: Nonstandardbutyl rubber stopperas your requests,drawings or samplesRubber(NBR,SI, Viton,EPDM, etc.)FOB Port:Shanghai ... Terms:L/C,T/T, Western UnionOur company product rubber stopper, if you have a mind please contact us. ...