Blue Certified Bonded Closure for Mass Spec ILT LC-Clean | 0.40" PTFE/Silicone Septa | 9mm Thread | Pack of 100 | Ideal for HPLC, GC, and Laboratory Sample Vials

Bonded closures feature clear PTFE/Silicone liner bonded directly to the closure without the use of glue or adhesives. These bonded closures provide a cost effective, integrated, one-piece system that eliminates costly line fallout. Closures are available in both pre-slit and non-slit designs.