4540-00-132-0723 (TM630)
NSN 4540-00-132-0723 (NIIN 00-132-0723) is an immer electrical heating element in Federal Supply Class 4540, Waste Disposal Equipment — an electrical device in the form of a resistor consisting of a resistance wire, an insulating material, and a sheath. Manufacturer part number TM630 (Chromalox Inc, CAGE 65586).
Key specs: 40 per square in single voltage watt density; 30000 single voltage wattage in watts; full characteristics table below. NIIN assigned January 1969; DEMIL A (none required).