LOCTITE® 404® Quick Set™ Instant Adhesive, General Purpose is designed for general maintenance and repair, one part, room temperature cure, instant adhesive. Excellent for bonding rubber and frequently used for rubber O-ring bonding. Mil Spec: Mil-A-46050CType II Class II. Commercial Item Description A-A-3097: Type II Class 2. Loctite 404 Quick Set Instant Adhesive should bestored in refrigeration at 40°F or lower.