LOCTITE STYCAST PC 40-UM is a single component, VOC free conformal coating. This product is specifically formulated to rapidly gel and immobilize when exposed to U.V. light, and then cure when exposed to atmospheric moisture, thus ensuring optimum performance even in shadowed areas. Thin layer coatings can be gelled, almost instantly, to a depth of 7 mils. LOCTITE STYCAST PC 40-UM fluoresces intensely with black light and exhibits excellent adhesion to a variety of metal, ceramic, and glass filled epoxy surfaces fulfilling the needs of the most demanding environmentally friendly applications in today's PCB marketplace. UL Classification LOCTITE STYCAST PC 40-UM is listed in UL's recognized component index with 94V-0 flammability rating in 1.6mm thickness cross section, File No. E328327.