Single-Heat Rings — Have two terminals for
single wattage on-off switch or thermostat.
Three-Heat Rings — Have three terminals
that split the heater into 2 equal circuits.
Center terminal is common.
Easy Installation — Circular shape and use of
Chromalox utility clamps simplifies use of ring
Nesting Rings to pack heat in a small area.
Half Sheath Units Have Reduced Thermal
Gradient to Heated Surface — Provides faster