LOCTITE® LB 8421 is a pale yellow, clear, solvent-based, oily lubricant spray that foams up when applied. Typically used on chain-driven equipment – chain, pin, roller and bushing areas. Sprockets, open gears, wire rope, pulleys, snatch blocks, hoists, conveyors, fork lifts, elevators, overhead door drives, mining, construction, earthmoving and materials handling equipment.