PTFE-Lined Closed Caps are replacement caps for Thermo Scientific glass environmental sample bottles, jars, jugs and vials

PTFE-faced silicone liner provides added cushion and an extra secure seal when used with bottles and VOA vials.

The same high-quality PTFE-lined caps used on Thermo Scientific glass environmental sample containers. The PTFE liner is bonded to the cap so it will not fall out or become separated from the cap.