A TIG torch medium back cap is a part of a TIG welding torch that is used to hold the tungsten electrode securely in place. It also applies pressure to the back of the collet to keep it in place against the collet body or gas lens. Medium back caps are typically used with tungsten electrodes that are 1/16" to 3/32" in diameter.
When choosing a TIG torch medium back cap, it is important to consider the type of welding you will be doing and the material of the tungsten electrode you will be using. It is also important to make sure that the back cap is compatible with your TIG torch.
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