Material:Body: Injection Molded HPX high performance resinLatch: Valox - Polybutylene Terephthalate (PBT)Latch (ALT): Xenoy - Polyester/Polycarbonate blendPinsStainless SteelPurge Body: Valox - Polybutylene Terephthalate (PBT)Purge Body (ALT): Xenoy - Polyester/Polycarbonate blendPurge Vent: Gortex membranePurge O-Ring: Buna-N, 50-60 Durometer Shore AHardware: Stainless Steel Body:Injection Molded HPX high performance resin Latch:Valox - Polybutylene Terephthalate (PBT) Latch (Alt):Xenoy - Polyester/Polycarbonate blend Pins:Stainless Steel Purge Body:Valox - Polybutylene Terephthalate (PBT) Purge Body (Alt):Xenoy - Polyester/Polycarbonate blend Purge Vent:Gortex membrane Purge O-ring:Buna-N, 50-60 Durometer Shore A Hardware:Stainless Steel Maximum Buoyancy:448.19lbs / 203.30kg Type of Closure:Two press and pull latches Interior Volume:5.08 cubic feet (0.144 cubic meter) Temperature:-20 to 140 deg. F / -29 to 60 deg. C