In addition to being extremely resilient, microcellular urethane foams are foam materials that offer excellent compression set resistance. They are capable of producing a gasket seal that definitely will not break down over extended use. These unique characteristics allow A.J. Rubber & Sponge Ltds. microcellular urethane foam gaskets to be used in a wide range of industry applications and perform well under the temperature range of -40°C to -90°C (-40°F to 194°F).