Honeywell 107408 Heat Conductive Compound

The Honeywell 107408 Heat Conductive Compound is a professional-grade thermal interface material designed specifically for HVACR service technicians. This 4-ounce can provides a high-consistency heat transfer grease essential for ensuring accurate temperature sensing in immersion wells and aquastat controllers. By eliminating air gaps between the sensing bulb and the well wall, this compound significantly reduces thermal resistance, preventing erratic cycling and delayed response times in hydronic heating and domestic hot water systems.

As the direct replacement for A505-1, the 107408 formula is comprised of a stable lithium complex grease base enriched with aluminum paste for superior thermal conductivity. Field application remains reliable across a wide operating range, though it is critical to note a maximum limit of 300?F. Whether you are installing new remote bulb controllers or performing maintenance on existing sensor wells, and whether you refer to it by its Tradeline MPN 107408/U or legacy numbers like 120650, this compound ensures your control sensors read the actual medium temperature without lag.

Key Benefits for Technicians:

• Ensures accurate temperature sensing by providing a continuous thermal bridge between bulb and well.
• High-viscosity heat conductive paste stays in place without running or drying out in vertical wells.
• Universal compatibility as the Honeywell A505-1 replacement for standard HVAC controls.
• Sufficient 4 oz. volume for high-volume service trucks or large-scale commercial installs.
• Enhanced thermal contact prevents overshoot and protects expensive system components from thermal stress.

Common Questions:

Can I use 107408 on high-pressure steam sensors?
This compound is rated for temperatures up to 300?F. For high-pressure steam applications exceeding this threshold, verify the equipment specifications as the compound may break down above this limit.

What is the best way to apply this to a deep immersion well?
Technicians typically apply a liberal coat to the sensing bulb before insertion. For deep or horizontal wells, ensure the bulb is fully seated and making physical contact with the end of the well for the fastest response time.

Is 107408 compatible with multi-brand sensors?
Yes, while it is the primary replacement for Honeywell and Resideo parts like the A505-1, this conductive compound works with any metal immersion well and sensing element requiring improved heat transfer.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.