13401400 - Tweco 34CT Nozzle Insulator for No. 3 & 4 Guns (2-Pack)

Keep Your Tweco Gun Running Smoothly

Don't let a worn-out insulator stop your weld. The Tweco 34CT Nozzle Insulator is the standard replacement for your Tweco #3 and #4 MIG guns, including the Spray Master 350 and 450 lines. This little part does a big job: it keeps the "hot" parts of your gun separate from the nozzle. If you've ever touched your nozzle to the bench and seen sparks fly, you know why a good insulator matters. It prevents those accidental shorts that can ruin a tip, damage your workpiece, or even overload your machine.

These insulators take a beating from heat and spatter, so they eventually wear out, crack, or get brittle. When that happens, having a fresh one ready is a lifesaver. This pack comes with two insulators, so you can swap one out now and keep the other in your toolbox for later. They are easy to install—just slip them over the diffuser or conductor tube (depending on your specific gun setup) before screwing on the nozzle.

Using genuine Tweco parts like the 34CT ensures everything fits tight and right. No rattling nozzles or gas leaks caused by poor-fitting aftermarket copies. Whether you are fabricating in a shop or doing repairs in the field, keeping your front-end consumables in top shape is the key to consistent, hassle-free welding. Grab a pack of these insulators and keep your arc stable and your nozzle electrically neutral.

This 2-pack is an essential addition to any welder's consumables kit. It fits the most common Tweco guns found in shops across the country, making it a versatile spare part to have on hand.