LOCTITE 401 SURFACE INSENSITIVE INSTANT ADHESIVE LOW / MEDIUM VISCOSITY, CLEAR, SURFACE INSENSITIVE, ONE PART, ROOM TEMPERATURE CURE, INSTANT ADHESIVE. DESIGNED FOR OEM ASSEMBLY OF DIFFICULT-TO-BOND MATERIALS WHICH REQUIRE UNIFORM STRESS DISTRIBUTION. PARTICULARLY SUITED FOR BONDING A WIDE RANGE OF MATERIALS, INCLUDING METALS, PLASTICS, AND ELASTOMERS. IDEAL FOR CLOSE FITTING APPLICATIONS.