Metal cased electrical filters are made by reflowing {TAIL ~ the material} to form {HEAD ~ fused glass} to metal seals and incorporating electrical thru conductors therein which may be formed as inductive windings 
Metal cased electrical filters are made by reflowing { TAIL ~ the material } to form { HEAD ~ fused glass } to metal seals and incorporating electrical thru conductors therein which may be formed as inductive windings
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH