... ).Material: Teflon coated Bromobutyl rubber 2).Size:32mm,etc 3).Feature: high clarity,compatibility with drug Product Category PP stopper, Teflon/PTFE/FEP coated rubber ... antibiotics, lyophilized formulation and prefilled syringe. Teflon coated butyl rubber stopper Descriptions:Specification: 32mm,etcMaterial: Teflon coated Bromo-butyl Colour: grey,red,blue,etcAdvantages ...