Does this kit include the conduit itself

Look for physical indicators such as a bulged top

System 450

The Johnson Controls T-4002-125 is a professional-grade plastic surface mounting back designed specifically for the T-4000 Series pneumatic thermostats

a loose fit on the shaft

Raypak 006021F Sensor Does this kit include theThe Raypak 006021F Roll Out Flue Sensor is a safety critical 150F fixed temperature switch engineered for precise thermal monitoring in high efficiency Raypak boiler parts and pool heaters. As an essential OEM HVAC replacement sensor, this component is designed to detect flame roll out or excessive flue gas temperatures, immediately breaking the safety circuit to prevent damage to the heat exchanger or cabinet. This Raypak roll out switch functions as