Acrylic activator designed to initiate the cure of LOCTITE toughened acrylic adhesivesLOCTITE SF A-534R is a red, acrylic activator designed to initiate the cure of LOCTITE toughened acrylic adhesives. This product is safe to use in production environments, as it is non-flammable and contains no solvents. Because the product is solvent free, parts can be bonded immediately after the activator is applied to the bonding surface and requires no drying time.