Lightweight CBRN Gas Mask Filter - NBC-17 SOF(R) 40mm Nato Filter - 10 Year Shelf Life

The NBC-17 SOFA(R) 40mm NATO filter canister, in combination with a full face gas mask, mouthpiece assembly, TAPRA(R), or PAPR, reliably protects air passages against a wide range of harmful substances including CBRN agents. The CBRN gas mask filters are produced with standard NATO 40mm round threads according to STANAG 4155 (EN 148- 1)- Rd 40x1/7". The CBRN filter components are made of hard plastic. This results in a very robust product that is extremely durable a