3M™ Speedglas™ Breathing Tube, SG-50W, sound-dampening, 1 per case - 7000128117

3M™ Speedglas™ Sound-Dampening Breathing Tube SG-50W is required when used with 3M™ Adflo™ Powered Air Purifying Respirator with high-efficiency (HE) filter and organic vapor/acid gas cartridge and 3M™ Speedglas™ Welding Helmet 9100-Air, 9100MP and M-Series. Use of the tube is required at all times for the 3M™ Versaflo™ Respiratory Helmet Assembly M-405 and M-407 and the 3M™ Adflo™ Powered Air Purifying Respirator regardless of filter choice. 3M™ Speedglas™ SG-50W is not NIOSH-approved with V-Series Supplied Air Valves. Features Breathing tube for powered air respirator in welding helmets Helps to reduce noise of air source Connects the welding helmet to the turbo unit