Caps, Headspace, Crimp Top, with Natural Silicone Rubber / Natural PTFE (5mil), High Purity Septa, fitted in Aluminum, Silver Caps with 10mm center holes. For use with 20mm Crimp Top Headspace Vials. BASIK Brand. 100/PK.
High Purity Silicone Rubber / PTFE Septa (5mil thick) with Durometer of 50 Shore A, (hardness) and 3.0mm thick.
Wide temperature range from -60⁰ to 200⁰C.