2021/8/7 · 8/6/2021 · Vial closures include Crimp Caps and Plug Caps, come in a variety of sizes and materials, including Aluminium, Butyl, Chlorobutyl, PTFE and Foam. In addition Septum and Liners also come in a variety of colours and materials including all of the above and Silicone, Rubber and Viton.