The unique Bevel-Seal™ makes a vacuum-tight o-ring connection to the PTFE tubing
· The HI-VAC® valve is easier to open under vacuum than the standard stopcock
· Closing the valve provides vacuum degassing after filtration
· Each unit is supplied with 3 feet (91 cm) of 1/4” OD FEP PTFE tubing
· 953906-6347 and 953906-6390 have FFKM o-rings and are THF-resistant
· Valve o-ring size is 010 and sidearm o-ring size is 108
· Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements