A solid oxide fuel cell stack having a plurality of cassettes and a compliant glass seal disposed between the sealing surfaces of adjacent cassettes, thereby joining the cassettes and providing a hermetic seal therebetween. The compliant glass seal may inc...

Disclosed is a spark plug that prevents a sharp increase in resistance of a resistor and materializes an excellent load life performance. A spark plug (1) is provided with a resistor (7). The resistor (7) is formed by heat-sealing of a resistor composition...