
There is nothing more frustrating than reaching for your trusty TIG torch only to find that the back cap won't tighten down properly. If you are running an ESAB W-201 or W-202 water-cooled torch, the lock ring is the unsung hero that keeps everything tight and right. The ESAB 639970 Lock Ring is the direct replacement you need to fix stripped threads or a damaged collar, saving you from the expense of buying a whole new torch head.
We know that in a busy shop, your equipment takes a beating. You are constantly swapping out tungsten, changing back caps for different tight spots, and putting the torch through its paces. Eventually, threads wear out. When they do, you lose that crisp, airtight seal you need for perfect shielding gas coverage. This genuine ESAB replacement part drops right in, restoring that "like-new" feel to your torch threads. It tightens down securely, so you can focus on your puddle, not on a rattling back cap.
Don't settle for generic knock-offs that might cross-thread or fail under heat. This part is built by ESAB for ESAB torches. It handles the heat of high-amperage water-cooled welding without warping or seizing. It’s a small part, but it plays a huge role in your weld quality. If your current lock ring is looking gnarly, or if you just want to keep a spare in your toolbox to avoid downtime later, this is the part you need.
Get your rig back in top shape quickly. Swap out that old, worn ring and get back to laying down dimes with the confidence that your equipment is secure, sealed, and ready for action.
| Additional Information |
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| Brand:ESAB |
| Packaging Description:1 Per Ea |
| Compatible Torch Models:W-201, W-202 |
| Part Type:Lock Ring |
| Process:TIG (GTAW) |