MIL-HDBK-1011/1
7.10.2.3
High Temperatures. Although ambient temperatures may seldom exceed
110 to 120 degrees F in tropic regions, portions of structures in these areas
may well reach 180 degrees F, or greater depending upon the material, when
exposed to direct sunlight. Polybutene, bituminous, acrylic-latex, polyvinyl
acetate latex sealants, polychloroprene (neoprene), polyvinyl chloride (PVC),
and polyurethane foams, and neoprene, PVC, and styrene butadiene rubber
extruded seals and closure strips have maximum recommended service temperature
ranges from 130 to 180 degrees F. Do not use these materials where structural
elements exposed to sunlight may exceed these temperatures.
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