THERMA*FLEX Expansion Joints are Non-Metallic Flue Duct Expansion Joints or flexible connectors which when properly designed, provide stress relief for piping and ducting systems by absorbing thermal growth & shock, isolating mechanical vibration and allowing for misalignments.

Flue duct expansion joints are custom engineered products designed to handle low pressure (±3 psig) applications with temperatures form -100°F to +2000°F. The expansion joints are manufactured using innovative non-metallic materials and designs.

Unaflex is one the country’s leading Expansion Joint Manufacturers. Since 1972 Unaflex has been dedicated to state of the art technologies combined with industry proven processes. In the 1990’s Unaflex has become the industry leader in “Combined Technologies” for the Expansion Joint and Flexible Hose Industries.

Unaflex is a full service Engineering and Manufacturing Company dedicated to providing flexible solutions. Our capabilities include; Metal, Fabric and PTFE Expansion Joint Manufacturing, Laboratory Testing and Analysis and Field Service.