For use-in-place seals, gaskets, bonding and protective coating applications, Master Bond Inc. has developed UV21, a UV-curable elastomer compound that is an alternative to conventional moisture-curing silicone materials. Its one-component, 100% reactive composition provides good storage stability at ambient temperatures. Optimal cure rates can be achieved in seconds when exposed to 320- to 365-nm radiation at 20 to 40 W/cm². The compound’s good electrical insulation properties are not affected by exposure to moisture or other hostile environmental conditions. Shore A hardness is 38 to 40, and service temperature range is from –65 to 250 °F. It adheres well to many plastics, including polycarbonates and acrylics, and to glass.

To contact the manufacturer of this product, click here.