rubber piston is medical parts, theare are many kinds of pistons,made by nature rubber

the test conducted by the State Medical High Polymer Testing Center and sampling test of  Province Technology Supervision Bureau,its indices all reach the standard of DIN 58367 YY/T0243-2003.Meanwhile,the factory Actively develops the medical rubbers such as rubbers for infusion,rubber piston for blood collector and bottled plug made of butadience styrene rubber.