air heater seal is a state of the art manufacturer of a patented, flexible full contact sealing system for rotating regenerative air preheaters. we also manufacture a complete line of composite type expansion joints, knife gates, butterfly and louver dampers for most service applications.

Damper Louver Expansion Joint Fabric Expansion Joint Valves Control Valves Duct Connectors Ducting Butterfly Damper Slide Gate Sluice Gate Gate Valves Actuation Actuators Poppet Guillotine Damper

Ljungstrom Air Preheaters Pre Heaters Air Heater Seals Diverters Stack Caps Bypass Seal Radial Seal Circumferential Seal Control Louver Control Damper Opposed Louver Parallel Louver High Temperature Damper High Temperature Expansion Joint Diverter Damper