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Huntingdon Fusion Techniques HFT® have designed and developed clinically clean, white Nylon Weld Purge Plugs ™, providing a great barrier for weld purging at a very low cost. What type of material are the plugs manufactured from? The Weld Purge Plugs ™ are made from engineering quality nylon 6. Q. What is the size range? The Plugs are manufactured in a range of sizes from 0.5” (13 mm) up to 6” (152 mm). Q. What is the seal made from? Manufactured with a standard seal made from natural rubber and for special applications seals made of silicone, nitrile and Viton rubbers are available. These low cost, lightweight plugs service a wide variety of industrial applications. As “overnight stoppers” they provide a strong barrier in pipeline activities, to prevent foreign bodies entering the line during downtime. Other applications include leak testing of pipework systems, whether commercial, domestic or industrial and sealing holes in castings, tanks and other assemblies. Q. What is the maximum working temperature for the Nylon Purge Plugs? Nylon plugs can be used intermittently up to 120˚C (248˚F) and the natural rubber rings up to 100˚C (212˚F). In continuous use, the nylon should be restricted to 100˚C (212˚F) and the rubber ring to 80˚C (176˚F). For higher temperatures, we manufacture plugs made from steel or aluminium with the rings made from silicone, which can be used continuously up to temperatures of 200˚C (392˚F) and intermittently up to 300˚C


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