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|  MIL-M-51113D(EA)
in contact with the lens, after which the carrier flaps shall be closed and
fastened. The assembly shall then be inclosed in a water-vaporproof, heat seal-
able bag conforming to MIL-B-117, type I, class E, style 1, except that the
heat sealable surface of the barrier material shall be a nonplasticized type
(such as polyethylene), the exterior surface shall be a non-woven, spun bonded
polyolefin, thickness 0.006 + 0.0006 inch. The bag shall have inside dimen-
--
sions of 15 by 18-1/2 inches (opening at the 15 inch dimension). The bag shall
be closed by heat sealing in accordance with the barrier material or bag manu-
facturers recommendations for dwell, temperature and pressure requirements.
This assembly shall be in accordance with the performance requirements for
method IA-8 of MIL-P-116. Prior to sealing the barrier bag, exhaust only the
amount of air necessary so that the bag will conform to the exterior shape of
the carrier assembly (mask inclosed) without exerting pressure on this assem-
bly. CAUTION: Exhausting excessive amount of air will cause distortion of the
rubber components of the mask. The packaged mask shall then be placed in a
fiberboard box conforming to PPP-B-636, class WR, variety SW, type CF, grade
W5C or V3c, having inside dimensions of 10-1/2 by 6-1/4 by 12-1/2 inches
(length, width, and depth, respectively) . The box shall. be closed with PPP-T-
76 tape in accordance with the method IV closure requirement in the appendix to
PPP-B-636.
Levels shall be as specified (see 6.2).
5.2 Packing.
5.2.1 Level A. Ten masks of one size, unit packed as specified in 5.1,
shall be packed in an overseas type cleated plywood box conforming to PPP-B-
601, style I, grade A, weight of contents 0-100 pounds, type 2 load, except
that the bearing surface of mechanically driven fasteners shall not be over-
drive more than 1/16 of an inch. The box shall have inside dimensions 33-1/4
by 21-1/2 by 13 inches (length, width, and depth, respectively). Filler pads
fabricated from the same material as the fiberboard box shall be included, as
necessary, to make a tight pack. The box shall be closed and strapped in accor-
dance with the appendix to PPP-B-601 using strapping and seals conforming to
QQ-S-781 [strapping - type I (regular' duty), finish B, grade 2, and seals -
type D, style I or IV, finish B, grade 2].
5.2.2 Level C. Ten masks of one size, unit packed as specified in 5.1,
shall be packed as specified in 5.2.1, except that the shipping container shall
be a weather resistant fiberboard box conforming to PPP-B-636, style RSC, grade
V3C, weight of contents 90 pounds, type I load. The box shall be closed in
accordance with Method V closure requirements and reinforced using non-metallic
strapping or tape banding in accordance with the appendix to PPP-B-636.
5.3 Marking. In addition to special marking required by the contract or
order, unit packs (5.1 and 5.2.2) and shipping containers (5.2.1 and 5.2.2)
shall be marked in accordance with MIL-STD-129. Each unit pack (5.1) and ship-
ping containers (5.2.1 and 5.2.2) shall be marked to show the lot number, shelf
life, and date of' manufacture of mask in accordance with MIL-STD-129. Omit
nomenclature marking (i.e., Mask, Chemical-Biological, Aircraft, ABC-M24) on
outside shipping containers for this item. Do not omit other identification
marking on outside shipping containers.
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