AN-12 Poly Washer (2pk)

The AN-12 Poly Washer (2pk) is a precision sealing component designed for high-reliability hydraulic and pneumatic connections in tactical, aerospace, and industrial applications. These nylon washers serve as critical barrier elements in fluid systems where pressure integrity and corrosion resistance are non-negotiable. Built to AN (Army-Navy) military specifications, this two-pack provides redundancy and replacement stock for maintainers, armorers, and field technicians who demand components that perform under demanding conditions.

Manufactured from durable nylon material, the AN-12 washer functions as a crush seal in AN-threaded connections, preventing fluid leakage by compressing under fastener load to create a reliable pressure boundary. The 12 designation refers to the AN thread size and port configuration, ensuring compatibility with standard military and commercial connector assemblies. Nylon's inherent chemical resistance to oils, fuels, and hydraulic fluids makes it ideal for environments where metal washers would corrode or degrade seal performance. The compact, lightweight design—weighing just 0.02 lbs per pair—adds negligible mass while delivering consistent sealing performance across repeated assembly and disassembly cycles.

Technicians working on military vehicles, aircraft, weapons systems, and industrial hydraulic rigs benefit most from stocking AN-12 poly washers, as field replacement prevents system downtime and contamination. These washers are essential for maintaining pressure integrity in fuel systems, coolant circuits, and pneumatic manifolds where even microscopic leakage risks operational failure. Installation is straightforward—place the washer beneath the AN fitting nut before torquing to specification—making it an accessible consumable for both professional and amateur technicians. A two-pack ensures you have backup stock for maintenance or emergency repairs without excessive over-ordering.