When you are building a system that will be continually running between 400 and 1200 degrees Fahrenheit, Advanced Flexible Systems, Inc. will create expansion joints with our high temperature composites. We design our high temp joints with various layers of thermal insulation, offset by vapor barriers, to create a product designed to withstand the high temperatures and accompanying levels of pressure. We also provide expansion joint covers to maintain the integrity of the composite rubber joints from any external elements.