One-component UV anaerobic sealant in Red color. 59621 is a low viscosity penetrating material that can bond and seal primers and bullets in ammunition. It is specially formulated for pre-assembled components; sealed ammunition operates by capillary action offering improved standard deflection and bullet pull force. Sealed ammunition will meet and pass US Army and US Navy waterproof testing within 30 minutes. This product cures after 2 seconds exposure to UV light and is formulated for high speed production. The silicone is internally anaerobically cured. The cured adhesive is visible under black light for visual inspection, is a thermoset plastic with excellent solvent and environmental resistance suitable for temperatures from -40F to 400 thermF (204ºC). Hernon® Hollow Munitions Sealants are a complete line of UV Cure adhesives.