5557 FG17 tube NL-5557/ 5557/FG17 tube (1) pc copy of the original GE thyratron rectifier tube, unique dual getter design for greater stability, heavy duty used in heat sealing and other industrial applications.
5557 FG17 tube NL-5557/ 5557/FG17 tube (1) pc copy of the original GE thyratron rectifier tube, unique dual getter design for greater stability, heavy duty used in heat sealing and other industrial applications.