2117301 - ESAB 2117301 Replacement Teflon Seal for Welding Torches

Keep Your Shielding Gas Where It Belongs

Every welder knows that good gas coverage is the secret to a clean, strong bead. The ESAB 2117301 Teflon Seal is a small but mighty part of your welding torch that plays a huge role in keeping your welds porosity-free. Located within the torch assembly, this seal is responsible for creating an airtight barrier that ensures your shielding gas—whether it's Argon, CO2, or a mix—flows directly to the nozzle without leaking out the sides. If you’ve been noticing inconsistent gas flow, hearing hissing sounds from the torch body, or seeing unexplained soot and porosity in your welds, a worn-out seal might be the culprit.

Why Teflon Matters

You might wonder why this seal isn't made of rubber. The answer is heat. Welding torches get incredibly hot, and standard rubber O-rings can melt, crack, or dry out when exposed to the radiant heat of the arc and the hot metal. This seal is made from Teflon (PTFE), a material famous for its ability to withstand high temperatures without losing its shape. It’s also incredibly slick, which means it won't stick or bond to the metal parts of your torch. This makes taking your torch apart for cleaning or repair much easier, as you won't have to scrape off melted rubber residue.

Protect Your Weld Quality

A leaking seal does more than just waste expensive gas; it sucks in atmospheric air. This is called the Venturi effect. When gas leaks out, air is pulled in, contaminating your weld pool with oxygen and nitrogen. This leads to weak, brittle welds and ugly pinholes. By swapping out your old, flattened, or cracked seal with a fresh ESAB 2117301, you restore the gas integrity of your torch. It’s a cheap insurance policy against failed X-rays and grind-outs.

Maintenance Tip

Make it a habit to check your seals whenever you change your liner or do a deep clean of your gun. If the white Teflon looks discolored, flattened, or has nicks in it, toss it and put in a new one. Keeping a few of these in your toolbox ensures that a simple worn part never stops you from burning wire. This authentic ESAB part is designed to fit perfectly, so you don't have to fight with it to get your torch back together.