Isifudumezi sekhoyili yasentwasahlobo senziwe ngentambo ye-nickel chrome resistance efakwe ngaphakathi kweshubhu lensimbi ye-nickel ye-chrome egcwele impushana ye-MgO. I-Spring coil heater yaziwa nangokuthi izifudumezi ze-tubular ezisebenza kahle noma izifudumezi zekhebula. I-heater yasentwasahlobo ingakhiqizwa noma ngaphandle kokwakhiwa kuma-thermocouples. I-Spring coil heater isetshenziswa kabanzi ekushiseni ubunjiniyela, isikhunta, imboni yepulasitiki, kufaka phakathi imishini yokudlulisa, inqubo yokukhipha, i-welding, inqubo yokwelapha ukushisa nezinye izimboni nezinkambu eziningi.