UNISEAL 29-17 is a controlled expansion iron-base alloy containing nickel and cobalt. It is widely used for glass-to-metal seals with borosilicate glasses commonly employed in electronic power tube envelopes. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-45. Producer or source: Cyclops Corporation.

NILO K has been developed specifically for the production of matched glass-to-metal seals when using hard, borosilicate glass. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-16. Producer or source: Henry Wiggin & Company Ltd. Originally published August 1959, revised January 1966.