The specification of Cartridge heater (heating tube,heat element,heating element,heater element,material)as following:

(1).Special for J,K,E,PT-100 and others thermocouple 
(2).All material are ROHS compliant.
(3).The rated voltage is 110V,220V,240V and others voltage also can be done

(4).If have another heating require,also please send your specification and drawing, we can do exactly same yours.