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12 oz putty tub of heat sink compound

Nu-Calgon

Nu-Calgon 4371-38 Heat Sink Compound Putty 12 oz hvac control

SKU CH-92YT-Y7S68

Heat sink compound putty in a 12 oz container for thermal transfer in HVAC controls

  • Heat-sink putty fills gaps for efficient thermal transfer
  • 12 oz container covers multiple service calls
  • Putty consistency stays in place without dripping
  • Nu-Calgon 4371-38 formulated for HVAC control reliability

Nu-Calgon 4371-38 Heat Sink Compound Putty

This thermal compound comes as a putty in a 12 oz container for HVAC control applications. It is intended for technicians who need a non-drip material to fill gaps between components and heat sinks. The putty consistency allows it to stay in place during assembly and service work. It suits maintenance tasks where a pliable thermal interface is preferred over liquid paste.

12 oz capacity covers typical service jobs

The 12 oz volume provides enough compound for multiple heat sink installations or repairs on control modules. It handles standard thermal coupling needs where a putty form factor is specified by the equipment manufacturer. The supply runs out on large-scale retrofit projects requiring many ounces per unit. Buyers needing a fluid compound for thin bond lines or automated dispensing should select a different product type.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 68% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameNU-CALGON

Questions about this item

Will the 12 oz putty stay pliable when applied to an older aluminium heat sink?

The compound is a non-hardening putty that remains soft on aluminium and copper surfaces, so it will not dry out or crack on legacy heat sinks.

How can I verify the 4371-38 compound is making good thermal contact after installation?

After mounting, check that the putty has spread into a thin, even layer with no visible gaps; a drop in component temperature under load confirms proper contact.

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