... syringe stopper Rubber piston for syringe: nature rubber , or synthetic rubber, 1ml, 2ml, 3ml, 5ml,10ml,20ml,30ml,50ml,60ml, syringe stopperRubber piston for syringe: nature rubber , or synthetic rubber ... . Products NameSpecification Model Unit PricePacking 1ml *Rubber piston Nature rubber, flat tipA,B,C,D modelUSD0.002580 ... , butyl rubberGrey colorUSD0.0880,000pcs/ctn380x310x24cm Stopper for Syringe