Caps, Headspace, Crimp Top, with Grey Butyl Rubber Laminated PTFE Septa, fitted in Aluminum, Silver Caps with 10mm center holes. For use with 20mm Crimp Top Headspace Vials. MicroSolv Brand. 100/PK.
Butyl Rubber Septa that is laminated with PTFE on both sides and is 55⁰ Shore A (hardness) and is 3.0mm thick. Temperature resistant from -40C to 120C.