A glass to metal seal is formed between the insulative preform 12 and the metal package 14 at {HEAD ~ the aperture} 16 to provide {TAIL ~ a hermetically sealed package} 
A glass to metal seal is formed between the insulative preform 12 and the metal package 14 at { HEAD ~ the aperture } 16 to provide { TAIL ~ a hermetically sealed package }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL