Sealing plugs are suitable for a wide range of applications in industry, repair, craft services, etc. They are most often used for sealing pipes when making an argon shield inside the pipe, low-pressure water tests, when bending pipes with heating and in fiber optic technology. Advantages of sealing plugs: high quality materials: nylon, the ability to effectively seal the pipe with uneven or scratched walls, easy cleaning: concrete, mortar, etc.; do not stick to the plug, plugs do not corrode, easy expansion and minimum force when tightening is provided by a special copolymer washer between the wing nut and the wall of the plug.