Advanced Materials & Tribology offers Duct Damper Flange Assemblies. Advanced Materials & Tribology supplies a wide range of Oil-less self-lubricated Bearings and Plates, Self Lubricating Bushes and Pump Bearings. Advanced Materials & Tribology is an ISO certified company. The Duct Damper Flange Assemblies is used in power houses as it can withstand maintenance problems due to heat and poor lubrication practices. The Flange Assemblies eliminates the need for any lubricant which would burn-off or harden at higher temperature.