1.Professional manufacturer of rubber piston for syringe 2.1.0.5ml,3ml,5ml,10ml,20ml,30ml ... , 3.nature piston;latex free piston Specifications:(1)Material: natural rubber ... rubber, Free from the protein of the natural latex to avoid possible allergy.(2)Function: it is a part of disposable syringe ... we can make new moulds as your requirement. rubber piston Syringe