... :1) Specifications: 13mm,20mm,24mm,26mm,28mm,30mm,32mm,34mm,etc.2) Material: bromo-butyl and chloro-butyl rubber.3) Color: grey ... for Oral Liquid Bottles,♥Teflon Coated Rubber Stopper and Polyester Coated Rubber Stopper,♥Multi-size Rubber gasket.We have some unique and ... Seal, Aluminum Cap and Clear Glass Vials matching with the Rubber Stopper .Our annual production capacity is over 30 billion in ...