Chromalox 241-054261-005, Heater Element Ring, A-20, 120V, 400W | eBay
Amazon.com: LANGshaw Brass Band Heater Electric Heating Ring 42x47/42x50/42x60/42x70/45x30mm Inner Diameter x Height with Two/Three/Five Wire (Color : Type 1-220V, Wattage : 230W 42x47mm(IDxH)) : Industrial & Scientific