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The Purge Plug 1 Inch is a weld purging plug for 1-inch tube inlets. A silicone rubber bladder expands against the tube wall when you tighten the wing nut, sealing the line so purge gas stays where the weld is. A quick disconnect feeds purge gas in, and a built-in diffuser spreads it evenly instead of blasting one spot. It suits TIG welders purging stainless and other tube work where oxygen must be kept away from the weld root. Compared with taped or foam plugs, it seals and releases faster and is reusable, though the silicone bladder sets a temperature limit and the plug fits only the tube size it is made for.
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This purge plug fits a 1 inch tube inlet. It has a silicone rubber bladder that resists heat.
A wing nut expands the plug inside the tube. A quick disconnect connects the purge gas, and a gas diffuser distributes the gas evenly.