One Piece Aluminum Seal with PTFE-Faced Natural Silicone Rubber Liner. Medium durometer PTFE/silicone construction. Allows for good resealability, core resistance, multiple injections, and easy penetration.
(Sample Photo Displayed. Individual items may differ from the image shown)
Fits Aluminum Seal Finish: 13
Thickness (PTFE): 0.002"
Thickness (Rubber): 0.06"