Mininert™ Valves for Vials from VICI Precision Sampling

Mininert valves for vials

The screw-cap Mininert valve for vials is available in a variety of sizes. The crimp-top valve for 13 mm ID glassware slides into the neck of the vial and features a threaded flange which is turned to provide a leak-tight fit.

Sold in packages of 12.

Cap/thread size Product No.
13 mm-425 614158
15 mm-425 614160
18 mm-400 614161
20 mm-400 614170
24 mm-400 614163
Crimp top 614250



Mininert valves can be used at temperature up to 105°F. However, after use at high temperatures, the valve may leak slightly when cooled to room temperature.


PTFE is highly inert and may be used with most common materials. It is particularly useful for working with most acids and organic solvents. However, problems may be encountered when used with organometallics and some strong bases. We recommend actual exposure tests before use with any material.


The sealing ability of Mininert valves is more than adequate for con-taining most volatile liquids and gases at low pressures. Mininert valves have been used as high as 120 psi without leakage, but this is not a recommendation for pressurizing glass containers to these levels. Such pressurization of glass containers can be extremely dangerous.