187W02 - ESAB Neoprene O-Ring - AS568-129 Size - 70A Durometer

Stop Leaks Before They Stop You

There is nothing more frustrating than a leaky seal shutting down your rig right in the middle of a job. The ESAB 187W02 O-Ring is your go-to replacement part for getting your gear back in action. We know that in the welding world, equipment takes a beating. Dust, grit, oil, and constant movement can wear down even the toughest seals. This Neoprene O-ring is built to handle that abuse. It’s made from a tough rubber compound that resists eating away when it comes in contact with shop oils and greases, ensuring that once you fix it, it stays fixed.

This isn't just a random rubber band; it's a precision part sized specifically for your equipment. With an inner diameter of roughly 1.55 inches and a thickness of just over a tenth of an inch, it fits tight and seals right. The 70A hardness means it's not too soft to get squashed out of place, but not so hard that it won't seal against the metal. It’s the Goldilocks of seals—just right for keeping gases and fluids where they belong. If you are tearing down a regulator, a torch, or a feeder for maintenance, don't try to reuse the old, flattened O-ring. That’s asking for trouble.

Swapping out your O-rings is cheap insurance. A failed seal can lead to gas waste, poor weld quality due to atmospheric contamination, or even safety hazards if you're dealing with pressurized systems. Keeping a few of these ESAB 187W02 rings in your toolbox means you are ready for the unexpected. You don't need to be a certified repair tech to appreciate the value of a good seal; you just need to be someone who wants their machine to work when they pull the trigger.

Don't let a fifty-cent part hold up a thousand-dollar project. Replace your worn-out seals with genuine ESAB parts and keep your focus on the arc, not on the hiss of a leak. This O-ring is easy to install, durable, and designed to meet the original factory specs of your machine.