Loctite 3874 is a thermally conductive adhesive. When used with activator 7387 it cures rapidly to form a high strength, high modulus, thermoset acrylic polymer. The thixotropic nature of Loctite 3874 reduces the migration of liquid product after application to the substrate. LOCTITE® 3874 is a light gray, opaque, thixotropic, thermally conductive acrylic ester adhesive. When used with Activator 7387, it cures rapidly to form a high strength, high modulus, thermoset acrylic polymer. Typical applications include bonding heat sinks to heat dissipating components such as BGAs in electronics applications.