Flanges are fabricated from 3/16" minimum plate. Copper sheathed elements are silver soldered into brass flanges. Steel, Incoloy and stainless steel sheathed elements are welded into flanges of like materials.
Element Spacers, made from 304 stainless steel, maintain a uniform distance between elements, thus preventing hot spots where elements may otherwise touch.
Terminals are 10-32 studs, spot welded to the element cold pin and insulated from the sheath with mica or silicone rubber. Elements are interconnected at the factory with copper or stainless steel bus bars. Cupped washers are furnished for field connections on heaters drawing less than 40 amps. Pressure connectors are furnished for larger heaters.
Moisture-Resistant Epoxy Seals are standard on copper sheathed elements. When the maximum fluid temperature will not exceed 250°F., epoxy seals can be furnished on steel, Incoloy and stainless heaters at no extra charge.
Gaskets are furnished with each heater. A 1/16" pressed fiber gasket is standard.