This military ammo box is extremely high quality; made of all steel with a powder-coated interior and exterior. The rubber gasket that seals the lid is solid rubber to keep the moisture out of your can. Produced in accordance with Milspec MIL-DTL-3060 Rev G and to US gov drawing No 7553296. Pressure tested in accordance to mil-dtl-3060g. S also the only manufacturer to include 1 desiccant packs with the purchase, so you don't have to worry about buying them elsewhere!