MIL-G-47032A, MILITARY SPECIFICATION, GLASS, POTASH SODA BARIUM, LEAD-FREE COMPRESSION SEALING (31 JUL 1990)

MIL-G-47032A, MILITARY SPECIFICATION, GLASS, POTASH SODA BARIUM, LEAD-FREE COMPRESSION SEALING (31 JUL 1990)., This specification covers one type of potash soda barium glass intended for use where a low coefficient of thermal expansion is desired.