Frequently Asked Questions - Submethod 41

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Listed below are portions of MIL-STD-2073 covering preservation submethod 41 (formerly Method IA-8: water-vapor proof bag, sealed). This web page identifies the method, types of materials authorized, a graphic illustration, and a link to the School of Military Packaging Technology's 'How To' web documents. If this material does not enhance your understanding regarding this method of preservation, please use either our feedback form to provide recommendations or contact us directly by E-mail us at:

Method 41 - Watervaporproof Bag, Sealed

How should items that require Method 41 preservation be packaged?

Per MIL-STD-2073, 'The item, wrapped and cushioned as required in, shall be enclosed in a close fitting heat sealed bag conforming to MIL-DTL-117, Type I, Class E, Style 1, 2, or 3; or Type I, Class F, Style 1: or Type II, Class E, Style 1, or 3 or Type III, Class E, Style 1. (Note: For electrostatic protection refer to When specified in the contract or purchase order, a designated bag, other than noted herein, shall be furnished. (Note: When specified in the contract or purchase order, a carton or box shall be required to effect the unit container and the primary cushioning specified in the contract or purchase order shall be placed between the outside of the bag and the inside of the carton or box.)'

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Last Updated:  5 Oct 2015