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Couplings and Backing Flange
The couplings used with glass equipment are important from two main points of view :
- They must ensure the effective seal of the joint.
- They should not induce any undue stress in the glass.
- They must be reliable in all service conditions.
In this section we have covered couplings to join glass components together as well as to join glass component with a other metal equipment.
PTFE bellows are available for normal and vacuum applications together with flanges to connect them to glass or non-glass equipment.