Thermal Compounds | McMaster-Carr

	Container Type Container Type

	Maximum Temperature Maximum Temperature

	Thermal Conductivity Thermal Conductivity

	Container Size Container Size

	For Use On For Use On

	Compatible With Compatible With

	Color Color

	White		Silver
	Black		Copper
	Blue		Tan
	Off-White		Clear
	Red		Amber
	Gray

	Material Material

Zinc Oxide

Rubber

	Manufacturer Manufacturer

Dow Corning

Loctite®

Momentive/GE

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Minimum Temperature Minimum Temperature

	Manufacturer Model Number Manufacturer Model Number

340
738
748
838
839
3165
3336
3748
3779
3888
5091
5145
5620
DP4XLEG
DP270
DP460EG
E-60NC
ES1001
ES1901
ES1902
ES2500
RTV11
RTV60
RTV162
US1750
US2350
US2651

	Consistency Consistency

	Formulation Formulation

	Additive Additive

	Specifications Met Specifications Met

	Melting Temperature Melting Temperature

	Dielectric Strength Dielectric Strength

	Clarity Clarity

Clear

Semi-Clear

Opaque

	Type Type

Protective Coating

Surface Filler

	For Surface Material For Surface Material

142 Products

Process Heating and Cooling

Heat Sink Compounds

Bond heat sinks to surfaces, eliminating air gaps for maximum heat transfer.

Non-Bonding Heat Transfer Compounds

Also known as thermal paste, these boron-nitride compounds increase heat transfer between parts while preventing them from sticking. Unlike antiseize compounds, they don't conduct electricity, so you won't risk shorting out sensitive electronics.

Heat-Transfer Putty

To eliminate air gaps that can cause heat loss and premature heater failure, mold this putty around heat cable to make direct contact with the pipe.

Lubricants

Electrically Conductive Antiseize Lubricants

Copper allows these lubricants to conduct electricity, while graphite gives them good chemical and corrosion resistance. Use them to prevent threaded fasteners and close-fitting parts from locking together in connections where you need to conduct electricity.

Electrically and Thermally Conductive Grease

A high silver content gives this grease excellent conductivity for applications where electricity and heat transfer are required.

Electrical Discharge Machining Lubricants

These electrical discharge machining (EDM) lubricants resist oxidation, so they last longer and extend the life of your electrode. They're clear for workpiece visibility.

Potting Compounds for Electronics

Heat-Transfer Potting Compounds

Formulated to draw heat away from sensitive electronic components, these potting compounds have higher thermal conductivity than standard potting compounds.

Adjustable-Flexibility Heat-Transfer Potting Compounds

Change the mix ratio of these heat-transfer potting compounds to achieve the right hardness for your application.

Ready-to-Use Silicone Potting Compounds

No mixing required—these potting compounds come ready to apply.

Two-Part Silicone Potting Compounds

Optically Clear Two-Part Silicone Potting Compounds

Clear enough to read through, this UV-resistant potting compound allows optimal light transmission for use with LEDs, solar cells, and fiber optics.

Epoxy Potting Compounds

The strongest of the potting compounds, epoxies are rigid and wear resistant. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation.

Optically Clear Epoxy Potting Compounds

Clear enough to read through, these UV-resistant potting compounds allow optimal light transmission for use with LEDs, solar cells, and fiber optics.

Hot-Melt Potting Compounds

Hot-melt potting compounds have excellent flexibility, good chemical and moisture resistance, and withstand a range of temperatures. They provide good electrical insulation.

High-Purity Urethane Potting Compounds

This potting compound is formulated for use in sensitive applications such as manufacturing semiconductors.

Urethane Potting Compounds

Urethanes withstand a wide range of temperatures and are the best choice for cold-temperature applications. They have excellent flexibility, good chemical and moisture resistance, and provide good electrical insulation.

Conductive Liquid Gallium

A safe alternative to mercury in thermometers and thermostats, gallium transfers heat and electricity without toxic vapor that can be inhaled. Also known as Galinstan.

Conductive Surface Fillers for Electronics

A high silver content allows these surface fillers to conduct electricity and heat. Use them to fill gaps and rebuild missing material on electrical connections or to assemble new components.