NOVELTY - The solid oxide fuel cell component comprises a first ceramic component (10), a sealing component (15) that includes a first glass-ceramic layer (20) over the ceramic component and a second glass-ceramic layer (30) over the first glass-ceramic layer, a second ceramic component opposite to the first ceramic component, and third glass-ceramic layer (40). The first glass-ceramic layer includes 0.5-10 wt.% of glass stabilizer component, and 10-40 wt.% of glass phase content. The second glass-ceramic layer includes 5-25 wt.% of glass phase content.    USE - The component such as an anode, a cathode, an electrolyte and an interconnect is useful in a solid oxide fuel cell system (claimed), which is useful in home or other building and in areas where electric service is unreliable or non-existent.    ADVANTAGE - The solid oxide fuel cell component can be reliably sealed with high flexibility and high mechanical, chemical and/or thermophysical stability thus providing high electrical efficiency and co-generation efficiency and fuel processing simplicity to the fuel cell.    DETAILED DESCRIPTION - The solid oxide fuel cell component comprises a first ceramic component (10), a sealing component (15) that includes a first glass-ceramic layer (20) over the ceramic component and a second glass-ceramic layer (30) over the first glass-ceramic layer, a second ceramic component opposite to the first ceramic component, and third glass-ceramic layer (40). The first glass-ceramic layer includes 0.5-10 wt.% of glass stabilizer component, and 10-40 wt.% of glass phase content. The second glass-ceramic layer includes 5-25 wt.% of glass phase content. The third glass-ceramic layer is present between the first and the second glass-ceramic layers or over the second glass-ceramic layer, and includes a lower glass phase content than the first glass-ceramic layer and a higher glass phase content than the second glass-ceramic layer. The third glass-ceramic layer includes 0.5-50 vol.% of glass phase content, and 0.5-10 wt.% of glass stabilizer component. The second ceramic component is present over the third glass-ceramic layer. An INDEPENDENT CLAIM is included for a method of sealing a ceramic component of a fuel cell.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a fuel cell component with glass-ceramic layers.    First ceramic component (10)    Sealing component (15)    First glass-ceramic layer (20)    Second glass-ceramic layer (30)    Third glass-ceramic layer. (40)