SEALVAR is an iron-nickel-cobalt strip alloy primarily used for making hermetic seals with harder glasses and ceramics. It is distinguished by its high purity, closely controlled chemistry and very low carbon level. The alloy meets specified ASTM F 15-78 (83) expansion coefficients. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. Filing Code: FE-119. Producer or source: AMETEK Specialty Metal Products.