Valve S61, Vacuum, PTFE-Plug, protected O-ring, 90°

With two 9mm O.D. sidearms sealed to the barrel at a 90° angle to one another. Viton® O-ring on PTFE shaft is protected with precision Teflon® wiper. The plug has a machined-in integral PTFE tip O-ring to make the primary seal. This design provides for an excellent vacuum tight seal without exposing any material other than Teflon® to chemicals.