Air Heater Seal Co. Inc. Since 1988 A manufacture of all types of dampers, fabric expansion joints, and flexible full contact seal systems to replace standard OEM style seals in Ljungstrom rotating regenerative air pre-heaters. AHS holds a patent on this innovative sealing system in the US, Canada and India. Air Heater Seal Co. innovative product design and fabrication abilities draw on decades of experience in energy efficiency and plant operation. The professionals at AHS have experience working with power stations, steel mills, co-generation plants, cement mills, grain processors, waste heat recovery systems, pulp & paper mills and many other industrial companies enables us to better understand a broad range of customer needs. We provide state-of-the-art design and materials which are used to manufacture our products to the highest standards possible. Our goal is superior products & services at a fair price. We stand behind our products which when used in operating conditions for which they were designed will perform exceptionally well. Call us if you are not completely satisfied, we will make it right. *ASME Section 1, Section 8; AHS is authorized under both the S, U stamp & national board. * B31.1, B31.3 *Welding to ASME Section IX & AWS D1.1 *Coating & Wrapping *Holiday testing of coatings * Blasting & Painting * Stress reliving * Tube Swaging *Rod & tube bending * Shearing Forming, CNC Plasma, Machining, Plate Rolling *In House Designing using CAD 2D & 3D