Frequently Asked Questions - Submethod 31

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Listed below are portions of MIL-STD-2073 covering preservation submethod 31 (formerly Method IC-3: watervaporproof 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: DSCC.packaging@dla.mil


image of method 31 - waterproof bag, sealed
  • How should items that require Method 31 preservation be packaged?
    MIL-STD-2073 states, 'The item, preserved, wrapped and cushioned as required in 5.2.3.5, shall be enclosed in a sealed bag Conforming to MIL-DTL-117, Type I, Class B, Style 2, or MIL-B-22020 as limited by MIL-I-8574. When specified, a designated bag, other than noted herein, shall be provided. (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.)'


    • NOTE: The packaging requirements (code) in your contract may specify the exact packaging materials to use to protect the item.

Content Inquiries: DSCC.Packaging@dla.mil

Last Updated:  5 Oct 2015