Surplus - NATO 40mm Gas Mask Filters NBC
These are new sealed Nuclear/Biological/Chemical (NBC) replacement screw-on canister/cartridges with the 40mm NATO thread.
This is the most universal standard filter designed used by militaries all over the world. Typically they will be factory sealed at each end.
These are surplus and show signs of being issued but are still sealed. We carry a variety of countries gas masks and filters so the filter you receive may vary slightly but will be sealed or close to it and NATO 40mm. Most common ones we have are Israeli and Russian. They can vary widely in age range.