IV Infusion Bottle/Bag Seals and Caps also called Euro cap, which is used for infusions. It is comprised of an outer cap and an inner polyisoprene rubber stopper gasket. First Rubber has the ability to produce all of them. Our gasket has good puncture resistance, which ensures the minimum rate of fragment drop during the puncture process and our good self-sealing performance can guarantee no leakage during using the process in the hospital. Picture 2 is the testing of the self-sealing performance. Welcome to us if you are looking for these items.