GL screw joints system up to 5 bar

Assembly as easy as pie - at high speed to your goal.

A Threaded neck of fitting
B Tapered ring
C V-ring
D Nut
E Tubing or tube


1. Push the nut on the tubing/tube
2. Push V-ring and then the tapered ring on the tubing/tube
3. Tighten the nut on the threaded neck – ready

What you should know about the screw joint system up to 5 bar

This economic screw joint system was developed especially for tubing made of PTFE, PFA or FEP, but it can also be used with tubes made of glass or steel. Its function is based on compression rings which provide a pressure resistance of up to 5 bar at room temperature. All parts which are exposed to the medium are made of PTFE. Only the nut which is not in contact with the medium is made of glass-fibre reinforced PTFE for better stability. The fittings and nuts have metric threads. All components of this system have a universal chemical resistance, since the product is only exposed to PTFE.



With our voucher code in just a few steps to a free day ticket!
Last Monday, Dr. Hoffmeister-Kraut, Minister for Economic Affairs, Labor and Tourism of the State of Baden-Württemberg, visited the...

BOLA catalogue

Order your free catalogue!

Know what's on

Subscribe for the BOLA newsletter now and receive regular information about the lab.

Made to Measure

You need a desiccator which is not in our standard product range? No problem – simply send a sketch.