Genuine 40mm NATO CBRN Gas Mask Respirator Replacement Filter

Hank's Surplus is proud to offer the South Korean K3 40mm NATO gas mask filters to the North American market. 

CBRN Filter Specs:

Official CBRN replacement gas mask respirator filter developed for the South Korean K3 respirator gas mask. Compatible with all masks that accept the 40mm NATO thread connection. 

Used to protect from Chemical, Biological, Radiological and Nuclear CBRN agents. 

Outer Material: Noryl thermoplastic. Inner Material: CBRN protection grade active carbon.

Thread connection: 40mm in accordance with NATO STANAG 4155 and EN148-1.

Weight: 11 oz.

Size: 115x59mm (without thread)

Vacuumed sealed in foil.

Manufacturing date: 12/2023. Expiration Date: 12/2033. 

Manufactured in South Korea by Hancom Lifecare (OEM). OEM is a government contractor for the South Korean military. 

Certification: Chemical test results were issued by ProQares, a TNO company in Holland as per NATO Triptych D103.

To Operate: Screw on filter to inhalation port. At first contact to inhalation port tighten filter up to 1/4 turn. Do not over tighten. Confirm leak free seal. 

Operational Service Life: The service life of this NBC filter will depend on breathing rate of user and concentration of contaminates. Environmental condition such as temperature and humidity also affect service life. It is recommended filter remain in seal packaging until usage.