MIL-I-15475B, MILITARY SPECIFICATION: INSULATION FELT, THERMAL, FIBROUS GLASS, SEMIRIGID (16-MAR-1962) [NO S/S DOCUMENT]

MIL-I-15475B, MILITARY SPECIFICATION: INSULATION FELT, THERMAL, FIBROUS GLASS, SEMIRIGID (16-MAR-1962) [NO S/S DOCUMENT]., This specification covers fibrous glass felt for insulating ship boiler uptakes. (See 6.2).