With polished barrels

Precision ground with corresponding numbers on the barrel and plug Lower vacuum chamber is evacuated via a separate 2mm hole in the plug which is not in the line of flow

Stopcock with three stems sealed 90° apart. Glass plug has a “T”-shape bore to connect any two or all three stems. Solid glass plug with constant pressure retention spring and clip.

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...

A 1:5 taper Teflon® stopcock with three side arms sealed 120° apart. Plug has a bore to allow connection of any two arms at once. With 1:5 PTFE metering plug and a threaded pressure nut Stopcock barrels are polished to prevent PTFE plug...

With 1:5 PTFE metering plug and a threaded pressure nut Stopcock barrels are polished to prevent PTFE plug from scratch

With two 9mm O.D. sidearms sealed to the barrel at a 90° angle to one another.The non-rotating PTFE plug has three O-rings, the tip O-ring making the primaryseal on the precision formed tapered seat.

PTFE covered cylindrical bars. With pivot ring.

Flanged type stopper with a hollow plug and sleeve extension that folds down over the neck of vessel tubing etc The diaphragm can be punctured with a syringe needle resealing after needle is withdrawn. Stoppers are made from natural...

T-shaped connecting tube with hose connections.

For apparatus having an inner joint 29/32.

For apparatus having an inner joint 24/29.