MIL-PRF-9884F
pad weighs no more than two pounds.
4.5.2 Water resistant verification. A specimen, 8 inches by 24 inches, shall be cut from a pad
selected at random from the lot. If the top and bottom of the energy dissipator pad has a covering
protecting the core, puncture it in not less than six places on both sides (if applicable) to allow
water to enter into the core structure. Immerse the specimen in tap water at room temperature
for a minimum of 60 minutes. The top of the specimen shall be at least 1 inch below the surface
of the water. After the immersion period, remove the specimen from the water and shake to
remove excess water. If equipped with a protective covering, remove either the top or bottom
covering. Verify that there is no separation failure greater than 2 inches in any direction between
the covering and the core. If there is a cover on the opposite side, remove it. Separate the core
structure across the width of the specimen in three places. Verify that the method of securing the
core structure is not affected by water immersion. Not more than one failure shall occur in any
one of the three separations.
4.5.3 Moisture content verification. Cut two specimens, each measuring 16 inches by 18
inches, from opposite ends of each of five pads randomly selected from the lot. Subject each
specimen to approximately 360oF in a drying oven for a period of 2 hours minimum. Each
specimen shall be weighed to the nearest 1/4 ounce, both prior to and after being dried. For each
specimen, the percent of moisture shall be computed by dividing the loss of weight after heating
by the weight before heating and multiplying by 100. Verify that the percent of moisture of the
pad shall not exceed 12%. Samples required shall have been manufactured at least 24 hours prior
to being subjected to this verification.
4.5.4 Water adsorptiveness verification. If paper or similar water adsorptive material is used
for the core, water adsorptiveness of each side of the material shall be determined. Verify in
accordance with TAPPI Standard T441 at an exposure time of 5 minutes minimum. Results for
each exposure shall be determined to the nearest 0.01 gram and the average of 10 results
calculated for each side. The maximum water adsorptiveness for each side shall be 100 grams per
square meter.
4.6 Environmental certification. The contractor shall certify that the energy dissipator pad
is functional at ambient temperatures of -40oF to +125oF.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in
the contract or order (see 6.2). When actual packaging of materiel is to be performed by DoD
personnel, these personnel need to contact the responsible packaging activity to ascertain requisite
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