Brass Plug in Immersion Heater Heating Elements Brass CW 617N, CW602N, CW614N Sizes: 1/4", 1", 1- ... -1/2", 3", 4" Brass Plug in Immersion Heater Heating Elements Brass Flange for Heating ElementsBrass CW 617N, CW602N, CW614NSizes: 1/4", 1 ... be made to customers' specification. Brass Plug in Immersion Heater Heating Elements