Bola laboratory screw joints.Bohlender Laboratory Screw Joints provide a wide range of fluoroplastic components that are used to attach tubes to bottles, lids, distributors and similar laboratory containers.

The GL Screw Joint System

Component parts:

A GL-threaded neck
B Sealing ring
C Tapered ring
D V-ring
E Screw cap with internal cone
F Tubing or tube
G Tapered ring with O-Ring behind PTFE sealing lip (only for screw joints for tubing dia. under 3 mm)

Assembly:
1. Push the screw cap on the tubing/tube
2. Push V-ring, tapered ring and then sealing ring on the tubing/tube
3. Tighten the screw cap on the GL-threaded neck – ready

Examples

A screw joint always consists of two elements

1. Fitting (straight, elbow, T-shape or a GL thread of a glass device)
2. Laboratory screw joint as connection between fitting and tubing/tube

Example 1

A screw joint always consists of two elements:

A BOLA PTFE Tube Fitting
B 3 x BOLA Laboratory Screw Joints

Example 2

If you want to connect tubing with different O.D. (2 mm and 6 mm= if an angle of 90°, you will need:

A 1 x BOLA Tube Fitting Elbow
B 1 x BOLA Laboratory Screw Joint for 6mm OD Tube
C 1 x BOLA Laboratory Screw Joint for 3mm OD Tube