94378273 - Arcair Tri-Arc Heavy Duty Upper & Lower Insulator Set (3/4 Inch)

Keep Your Tri-Arc Torch Running Strong

When you are deep in a gouging job at the foundry, the last thing you need is a torch failure. The Arcair 94-378-273 HD Upper & Lower Insulator Set is your go-to replacement kit for maintaining the legendary Arcair Tri-Arc® torch. Designed specifically for setups running big 3/4-inch carbons, these insulators are the unsung heroes that keep the power where it belongs—at the arc—and away from the torch handle and body.

Why Replace Your Insulators?
Over time, the intense heat and flying sparks of carbon arc gouging take a toll on torch internals. Cracked or worn insulators can lead to dangerous electrical shorts, erratic arcs, or even a completely melted torch head. If you notice your current insulators look charred, cracked, or loose, it is time to swap them out. This kit comes with both the upper and lower pieces you need to do a complete refresh of the head assembly insulation.

Built for the Foundry
These aren't standard-duty parts; they are the "HD" (Heavy Duty) version. Arcair knows that foundry work is brutal. That is why these insulators are made from a tough, heat-resistant composite that stands up to the punishment of pad washing and heavy metal removal. They resist impact and won't crumble under the high clamping pressure needed to hold 3/4" electrodes steady.

Genuine Arcair Quality
Don't risk your equipment with knock-off parts that might not fit right. These are genuine OEM parts, meaning they drop right into your Tri-Arc torch without modification. Installation is straightforward during your regular maintenance teardown. By keeping a spare set of 94-378-273 insulators on the shelf, you ensure that your gouging operations stay productive and safe, minimizing downtime when it matters most.