TT-E-490E, FEDERAL SPECIFICATION: ENAMEL, SILICONE ALKYD COPOLYMER, SEMIGLOSS (FOR EXTERIOR AND INTERIOR USE) (25-SEP-1975) [S/S BY MIL-PRF-24635]

TT-E-490E, FEDERAL SPECIFICATION: ENAMEL, SILICONE ALKYD COPOLYMER, SEMIGLOSS (FOR EXTERIOR AND INTERIOR USE) (25-SEP-1975) [S/S BY MIL-PRF-24635]., This specification covers a copolymerized silicone alkyd enamel for use on primed, smooth metal surfaces. The material complies with Air Pollution Regulations, \"Rule 66\".