HH-I-1972/GEN, FEDERAL SPECIFICATION: INSULATION BOARD, THERMAL, FACED, POLYURETHANE OR POLYISOCYANURATE (21 AUG 1981) [S/S BY ASTM-C1289]

HH-I-1972/GEN, FEDERAL SPECIFICATION: INSULATION BOARD, THERMAL, FACED, POLYURETHANE OR POLYISOCYANURATE (21 AUG 1981) [S/S BY ASTM-C1289]., This specification covers the general requirements for faced thermal insulation boards composed of rigid cellular polyurethane or polyisocyanurate foam surfaced with other materials. Additional specific requirements are covered by the applicable specification sheet (see 1.2). The service temperature will vary depending on the facing materials and the application. These specifications do not cover cryogenic application. For intended uses see 6.1.