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C
opper - Brass Neck Liners
For high heat applications fitting brass or copper wound jumper or neck liner on the end of the
liner at the neck end will increase the working temperature of the liner as well as improve the
electrical conductivity of the welding power transfer to the wire. It is recommended for all
Aluminum and Silicone Bronze welding applications.
4.3.5 Torch & Wire Feed Set-Up for Aluminum Wire
The same method is used for Teflon and/or Polyamide Liners (PA).
Copper Neck Liner
Teflon Liners
Blue-0.6mm-0.8m
Red - 0.9mm - 1.2mm
Yellow - 1.6mm
Black-1.0mm-1.6m
PA Liner
Teflon and Polyamide (PA) Liners
Teflon liners are well suited for feeding soft wires with poor column strength like aluminum wires.
The interiors of these liners are smooth and provide stable feeding, especially on small diameter
welding wire Teflon can be good for higher heat applications that utilize water-cooled torches
and brass neck liners. Teflon has good abrasion resistance characteristics and can be used with a
variety of wire types such as silicon bronze, stainless steel as well as aluminum. A note of caution
to carefully inspect the end of the welding wire prior to feeding it down the liner. Sharp edges
and burrs can score the inside of the liner and lead to blockages and accelerated wear.
Polyamide Liners (PA) are made of carbon infused nylon and are ideal for softer aluminum,
copper alloy welding wires and push pull torch applications. These liners are generally fitted with
a floating collet to allow the liner to be inserted all the way to the feed rollers.
Blue-0.6mm-0.8m
Red - 0.9mm - 1.2mm
Yellow - 1.6mm
Green - 2.0mm - 2.4mm
Steel Liners
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