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wording should be as simple as possible and unmistakably clear. Diagrams should be self-explanatory
because the eventual user may not understand written instructions due to language barriers. Sealing and Testing Seals by Submersion
D-60. When the packager is done packing, he must seal the lid of the container, making it watertight. He
can test the seal by entirely submerging the container in water and watching for escaping air bubbles. If
possible, hot water should be used because hot water will uncover leaks that cold water will not. WRAPPING MATERIALS
D-61. The most important requirement for wrapping material is that it is moisture-proof. In addition, the
wrapping material should self-seal or adhere to a sealing material. It should be pliable enough to fit closely,
with tight folds, and tough enough to resist tearing and puncturing. If the packager cannot find one material
to meet his needs, he can use one wrapping material for pliability and another for toughness. He should use
the thin, pliable material as the inner wrapper and the heavier, tough material as the outer layer. A tough
outer wrapping is essential unless the container and the padding are adequate to prevent items from
scraping together inside the cache. Five wrapping materials are recommended for field-expedient use
because personnel can often obtain them locally and use them effectively, even if personnel are unskilled. D-10 TC 18-01 30 November 2010 Special Forces Caching Aluminum Foil for Use as an Inner Wrapping
D-62. Aluminum foil is the best of the widely available materials. It is moisture-proof as long as it does not
become perforated and the folds are adequately sealed. The drawback of tin foil for caching is that thin foil
perforates easily and heavy foil (over 2 millimeters thick) tends to admit moisture through the folds. The
heavy-duty grade of aluminum foil sold for kitchen use is adequate when the packager uses an outer
wrapping. Scrim-backed foil, which is heat-sealable, is widely used com...
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This document was uploaded on 01/15/2014.
- Winter '14