Frequently Asked Questions - Submethod 53

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Listed below are portions of MIL-STD-2073 covering preservation submethod 33 (formerly Method IC-1: grease-proof, 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:

illustration of preservation submethod 53
  • How should items that require Method 53 preservation be packaged?
    MIL-STD-2073 cites, 'The item, wrapped, cushioned, and desiccated as required in and anchored or shock mounted as required in MIL-STD-1186 shall be enclosed in a sealed bag conforming to MIL-E-6060. When specified in the contract or purchase order, a window of material conforming to MIL-B-22191, Type I shall be provided in the bag in accordance with MIL-E-6060 procedures for packs 15 cubic feet or larger. When specified, externally mounted plug type humidity indicators conforming to MIL-I-26860 shall be used. When an exterior container is to be placed over the floating bag, a removable inspection port shall be provided in the exterior container body, so situated as to coincide with the location of the inspection window of the bag or the mounted humidity plug.'

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

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Last Updated:  5 Oct 2015