Structural Low Density Filler, Fire Retarded

S-387E is a two-part, cold curing epoxy sealant. It is designed to seal air filters and has the particular feature that it does not "wick" up the filter paper so reducing its efficiency. S-387E has a low density and is flame retardant. This is achieved by adding hollow microspheres to the part 1 (resin) and two flame retardants to the part 2 (hardener).