The Rheem AP18381B Thermocouple is a critical component for gas appliances, ensuring safe and efficient operation. This thermocouple is designed to detect the pilot flame, providing reliable performance in various heating applications. Constructed with high-quality materials, it offers durability and longevity. Its compact design allows for easy installation in Rheem water heaters and other compatible systems. This thermocouple meets industry standards for safety and reliability, making it an essential part of your gas appliance maintenance.