W-50 - Western Enterprises W-50 Fiber Sealing Washer

Don't Let a Leaky Connection Stop Your Work

There is nothing more frustrating than setting up your rig, turning on the gas, and hearing that tell-tale hiss of a leak. Not only is it wasting your expensive shielding gas or fuel, but it's also a major safety hazard in the shop. Often, the culprit is a worn-out, dried-up, or missing washer. The Western Enterprises W-50 Fiber Washer is the unsung hero of your welding setup, providing the tight seal you need to keep your gases flowing to the torch and not into the air. This is the part you don't think about until you need it, and when you need it, you really need it.

The W-50 is made from a tough fiber material that is designed to be crushed slightly when you tighten your fittings. This "crush" is what creates the seal, molding the washer to the metal surfaces of your regulator, hose, or manifold connections. Because they are designed to compress, fiber washers are generally considered single-use or limited-use items. If you crank down on an old washer too many times, it gets hard and brittle, and it won't seal properly anymore. That's why smart welders and fabricators keep a pack of these in their toolbox or repair kit. It’s a cheap insurance policy against downtime.

This specific washer fits a variety of standard brass fittings found on welding manifolds and equipment. With an inner diameter of roughly 9/16" (0.562"), it slides perfectly onto compatible nipples and sits flat to ensure a uniform seal. Whether you are maintaining a large shop manifold system or just fixing up a connection on a custom rig, having a fresh W-50 washer ensures you can tighten your connections with confidence. Don't rely on Teflon tape for connections that require a washer—do it the right way with the proper sealing component.

Installation is simple: remove the old, cracked washer, clean the seating surfaces of any debris or grit, slide on the new W-50, and tighten your fitting. Remember not to over-torque it; let the washer do the work. A snug, firm connection is all it takes to stop the hiss and get back to laying beads. Keep your equipment running safely and efficiently with genuine Western Enterprises replacement parts.