Caps, Screw Top, Solid, with Natural Silicone Rubber / Natural PTFE Liner, fitted in knurled polypropylene, White Caps. For use with 24-414mm threaded EPA Style vials. ND24 threads. BASIK Brand. 100/PK.
Liner is 3.18mm (0.125") thick and can be used for long term storage with any 30, 40 or 60 EPA Style vial that has 40-414 threads.
Solid top cap does not have an opening and is designed for storage or transportation.