MIL-DTL-3688D
(c)
Use a commercially available rubber covered inking roller, 2 inch (5.0 cm) diameter x
3 inch (7.5 cm) width.
4.4.14.2 Preparation of test specimens. The panels, prepared as in 4.4.14.1 (a), shall be dipped
in wax emulsion and allowed to dry for 30 minutes at room temperature 77° ± 5°F (25° ± 2°C).
Apply a tape strip (see 4.4.14.1 (b)) to each coated panel with the adhesive face down and in a
manner such that 4 1/2 inch (11.4 cm) of the tape extends beyond one end of the panel. Pass the
roller twice over the surface of the tape, once in each direction, using only the weight of the
roller in applying the tape to the panel.
4.4.14.3 Unaged. Using four of the test specimens prepared as in 4.4.14.2, double the free end
of the tape and pull the adhering tape from the panel at a rate of 20 inches (50 cm) per minute.
The test shall be performed at a temperature of 70° to 80°F (21° to 27°C) and a relative humidity
of 50 to 60 percent. The test shall be conducted within 2 minutes after the tape has been applied
to the panel.
4.4.14.4 Aged. Four of the test specimens, prepared as in 4.4.14.2, shall be aged in a drying
oven maintained at 145° ± 5°F (63° ± 3°C) and not less than 50 percent humidity for 24 hours.
At the end of 24 hours, remove the panels from the oven and allow them to stand for two hours
at 70° to 80°F (21° to 27°C). They shall then be tested for adhesion as specified in 4.4.14.3.
4.4.15 Flexibility. Obtain two phosphate coated, low carbon steel (SAE 1010) panels, 4 x 12
inch x 0.026 inch thick (10 x 30 cm x 0.065 cm) as in 4.4.11. The panels shall be prepared as
outlined in 4.4.14.2 except that they shall be allowed to dry for 48 hours at room temperature
(77° ± 2°F) (25° ± 2°C). At the end of 48 hours, subject the panels to a 180° bend over a
stationary 1/8 inch (0.32 cm) diameter mandrel. Examine for compliance with 3.17.
4.4.16 Resistance to salt spray corrosion. Obtain six phosphate coated, low carbon steel (SAE
1010) panels, 4 x 12 inch x 0.026 inch thick (10 x 30 cm x 0.065 cm) as in 4.4.11 and air dry for
72 hours. After air drying, expose the unscored panels to 5 percent salt spray for 6 hours
according to ASTM B117. Upon removal, examine for corrosion. Strip the wax coating from
the panels by solvent cleaning. Re-examine for compliance with 3.18.
4.4.17 Accelerated storage stability. A one quart container of the wax emulsion (see 4.3.3) shall
be stored at 145° ± 5°F (63° ± 2°C) for a period of 15 days. At the end of this time, the sample
shall be examined for compliance with 3.19.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house
contractor personnel, these personnel need to contact the responsible packaging activity to
ascertain packaging requirements. Packaging requirements are maintained by the Inventory
Control Point's packaging activities within the Military Service or Defense Agency, or within the
military service's system command. Packaging data retrieval is available from the managing
Military Department's or Defense Agency's automated packaging files, CD-ROM products, or
by contacting the responsible packaging activity.
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