External Ammo Sealant 59521

External Ammunition Sealant 59521 is a single component UV curable anaerobic sealant. 59521 has a low viscosity penetrating material capable of bonding and sealing primers and case mouths in ammunition. It is specially formulated for pre-assembled components; it works by capillary action sealing ammunition and improving bullet pull force. Curing occurs when the adhesive is applied between mating surfaces. The cured adhesive is a thermoset plastic suitable for temperatures up to 400°F (204°C) and endures exposure to most solvents. Ammunition Sealant 59521 cures quickly at room temperature without the need for surface activators or heat to seal primer and case mouth assemblies. Fixturing strength develops in two to five minutes, Full strength will be reached in 4 hours. Cure fillets at UV light irradiances above 100 milliwatts/cm² to insure proper cure.