Silicone/PTFE 10mm Screw Top w/Single Slit

These 12x32mm vials with an 10mm opening are excellent for long term storage. The clear vials are a Type 1 Class A (33 expansion) while the amber vials are a Type 1 Class B (for light sensitive products). They are a standard screw top opening with or without patch. Closures feature inter-seal bonding process which prevents septa fallout. They are produced with the highest quality silicone septa and elastomer products in the world with the lowest level of extractable anywhere. Packaged in packs of 100 with 10 packs per case.