Item Condition
These filters are factory sealed / vacuum sealed and have not been opened. Listing is for a lot of 2 filters.
There is no expiration date stamped on the filters that we could find. Since they are still factory sealed, they should remain in good storage condition as long as the seal is not broken. Please review all photos for exact condition, markings, and packaging details.
Overview
This listing is for two U.S. military 40mm threaded gas mask filter canisters. These were designed for the M40 series gas masks, but they should also fit other compatible NATO 40mm threaded gas masks.
Great for military surplus collectors, replacement display filters, training gear, preparedness kits, field gear, or gas mask accessories.
Important Note
This listing is for the lot of 2 gas mask filter canisters only. The gas mask shown in photos is for demonstration / fitment reference only and is not included.
Product Details
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Quantity: Lot of 2 filters
- Type: Gas mask filter / canister
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Thread Type: NATO 40mm
- Compatibility: Designed for M40 series gas masks
- Also fits compatible NATO 40mm threaded masks
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NSN: 4240-01-361-1319
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Part Number: 5-3-1520
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Model / Type: C2A1
- Marking: Canister, Chemical-Biological Mask
- Color: OD Green
- Condition: Factory sealed / vacuum sealed
- Expiration Date: No expiration date stamped
Key Features
- Genuine U.S. military surplus filter canisters
- Factory sealed / vacuum sealed
- Designed for M40 series gas masks
- Compatible with many NATO 40mm threaded gas masks
- Lot includes two filters
- Great for collectors, display, training, emergency gear, or replacement surplus filters
- Pictures are of the actual style of item included
Important Compatibility Note
These filters were designed for the M40 series gas mask. They should fit other masks that use a standard NATO 40mm threaded connection, but fitment can vary by mask model. Please confirm compatibility with your mask before purchasing.
Safety / Use Notice
These are military surplus filters with no visible expiration date stamped. They are being sold as surplus items. Buyer is responsible for inspecting the item and determining suitability for any intended use. We make no safety guarantee for life-support, hazardous environment, or professional protective use.
Shipping
Items ship same day or next business day.
⚡ We Ship Fast!
Please make sure your shipping address is correct before placing your order.
Returns
Items must be returned in the same condition as received. Please do not open, unseal, use, modify, damage, or alter the filters, as this will void the return policy.
Export Restriction Notice
This item may be restricted under U.S. export regulations. By purchasing, the buyer agrees this item will not be exported outside of the United States without proper authorization.
Ships to U.S. addresses only.
