Do you have a Nordson® glue gun that has stopped heating? Instead of replacing the complete applicator head, try repairing it by replacing the heater and the RTD sensor. Heaters generally run under $60, depending on which applicator head you use and the RTDs run under $50 each. Much less expensive than buying a new complete applicator head. Please call us if you need help determining which specific heater and/or RTD sensor you need.