Thermal Compounds | McMaster-Carr

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

REACH Compliant

	Manufacturer Manufacturer

Dow Corning

Loctite®

DuPont

	Trade Name Trade Name

LB 8008 C5-A Copper-Based
Anti-Seize

Molykote 4 Electrical
Insulating Compound

Molykote 5 Compound

LB 8065 C5-A Copper-Based
Anti-Seize

	Electrical Properties Electrical Properties

Conductive

Electrical Insulating

	Additive Additive

	Melting Temperature Melting Temperature

	Specifications Met Specifications Met

	Lubricant Type Lubricant Type

Grease

Antiseize Lubricant

	Thickener Thickener

Silica

Lithium

Silicone

	Dielectric Strength Dielectric Strength

	Electrical Resistivity Electrical Resistivity

	NLGI Viscosity Grade NLGI Viscosity Grade

2-3

Not Rated

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72 Products

About Lubricants

About Grease

About Paint and Protective Coatings

Bond heat sinks to surfaces, eliminating air gaps for maximum heat transfer. These compounds are commonly used with transistors, diodes, rectifiers, and transformers. Product regulations restrict sales to the listed jurisdictions/areas.

Zinc-oxide compounds create a more secure bond than silicone compounds.

		Container
Thermal Conductivity	Temp. Range, °F	Type	Size	Manufacturer	Manufacturer Model Number	Specifications Met	Cannot Be Sold To		Each
Silicone
0.68 W/m-K @ 97° F	-40° to 390°	Tube	5 oz.	Dow Corning	340	__	__	00000000	000000
0.75 W/m-K @ 97° F	-40° to 400°	Tube	8 oz.	__	__	__	__	00000000	00000
0.75 W/m-K @ 97° F	-40° to 400°	Pail	80 lbs.	__	__	__	__	000000000	00000000
Zinc Oxide
0.92 W/m-K @ 97° F	-40° to 320°	Tube	2 oz.	__	__	MIL-C-47113	__	0000000	00000
0.92 W/m-K @ 97° F	-40° to 320°	Syringe	1 oz.	__	__	MIL-C-47113	__	00000000	00000
0.92 W/m-K @ 97° F	-40° to 390°	Tube	4 oz.	__	__	ASTM D5470	Outside United States and Canada	00000000	00000
0.92 W/m-K @ 97° F	-40° to 390°	Jar	16 oz.	__	__	ASTM D5470	Outside United States and Canada	00000000	00000
5 W/m-K @ 97° F	-40° to 500°	Tube	2 oz.	__	__	__	__	00000000	00000
5 W/m-K @ 97° F	-40° to 500°	Tube	4 oz.	__	__	__	__	00000000	00000
5 W/m-K @ 97° F	-40° to 500°	Jar	16 oz.	__	__	__	__	00000000	000000
5 W/m-K @ 97° F	-40° to 500°	Syringe	1 oz.	__	__	__	__	00000000	00000

Non-Bonding Heat Transfer Compounds

Heat Transfer Compound

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. They're often used on thermocouple probes to improve accuracy. You can also use them in 3D printer heating blocks and other high-temperature areas to keep parts from fusing together.

Container
Size, oz.	Type	Chemical	Max. Temp., °F	Thermal Conductivity	Color	Includes	For Use On	Compatible With		Each
0.2	Syringe	Boron Nitride	1562°	31.4 W/m-K @ 212° F	White	Three Applicator Brushes	3D Printer Extruder Heating Elements, Electrical Components	Aluminum, Brass, Copper, Iron, Nickel, Stainless Steel, Steel, Titanium	0000000	000000
1	Syringe	Boron Nitride	1562°	31.4 W/m-K @ 212° F	White	__	3D Printer Extruder Heating Elements, Electrical Components	Aluminum, Brass, Copper, Iron, Nickel, Stainless Steel, Steel, Titanium	0000000	00000

Electrically and Thermally Conductive Grease

A high silver content gives this grease excellent conductivity for applications where electricity and heat transfer are required. It is suitable for ESD (electrostatic discharge) and EMI (electromagnetic interference) shielding applications. Product regulations restrict sales to the listed jurisdictions/areas.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 2 is about the consistency of peanut butter.

Electrical resistivity is a measure of how well a material opposes the flow of electricity. The lower the rating, the more electricity it conducts.

Thermal conductivity measures a material’s ability to transfer heat. The higher the rating, the more heat it transfers.

Grease lubricates most efficiently within the listed temperature range. Melting temperature is the point at which grease will fail and run out of equipment, leaving it to run dry.

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size, oz.	Type	Temp. Range, °F	Melting Temp., °F	Electrical Resistivity, ohms-cm	Thermal Conductivity	Color	Cannot Be Sold To		Each
Silicone Thickener
Not Rated	Synthetic	100% Silver	0.2	Syringe	-70° to 485°	490°	0.010	40 Btu/hr. × in./sq. ft./°F	Silver	Outside United States and Canada	0000000	000000
Grease without Thickener
2	Synthetic	75% Silver	1	Jar	-70° to 500°	Not Rated	0.005	60 Btu/hr. × in./sq. ft./°F	Silver	__	0000000	000000
2	Synthetic	85% Silver	0.5	Jar	-40° to 300°	Not Rated	0.005	60 Btu/hr. × in./sq. ft./°F	Silver	__	0000000	000000
2	Synthetic	85% Silver	1	Jar	-40° to 300°	Not Rated	0.005	60 Btu/hr. × in./sq. ft./°F	Silver	__	0000000	000000

Food Industry Electrical-Insulating Grease

Use this grease in areas where there is the possibility of contact with food. Also known as dielectric grease, it lubricates and protects electrical systems. It resists water and corrosion. This grease can be used on most rubber and plastic.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 1 is about the consistency of tomato paste. NLGI 2 is about the consistency of peanut butter. NLGI 3 is about the consistency of vegetable shortening.

Dielectric strength measures the maximum voltage a grease can withstand without losing its insulating properties. The higher the dielectric strength, the better its quality as an insulator.

Grease that is NSF Registered H1 and grease that meets FDA Compliant 21 CFR 178.3570 are rated for incidental contact with food. Grease that meets NSF/ANSI 51 and FDA Compliant 21 CFR 175.300 are rated for direct contact with food. Grease that meets NSF/ANSI 61 is certified for use with components that come into contact with drinking water.

Grease lubricates most efficiently below the maximum temperature. DuPont Molykote 4 Electrical Insulating Compound also acts as a moisture barrier.

Each

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size	Type	Temp. Range, °F	Dielectric Strength, V/mil	Color	Specifications Met		Each
DuPont Molykote 4 Electrical Insulating Compound—Silica Thickener
2-3	Synthetic	__	5.3 oz.	Tube	-40° to 400°	450	White	SAE AS8660, FDA Compliant 21 CFR 175.300, NSF/ANSI 61, NSF/ANSI 51	0000000	000000
2-3	Synthetic	__	8 lbs.	Pail	-40° to 400°	450	White	SAE AS8660, FDA Compliant 21 CFR 175.300, NSF/ANSI 61, NSF/ANSI 51	0000000	000000
Silica Thickener
1	Synthetic	Silicone	1 oz.	Tube	-40° to 400°	350	Clear	NSF Registered H1	0000000	0000
1	Synthetic	Silicone	4 oz.	Tube	-40° to 400°	350	Clear	NSF Registered H1	0000000	00000

Package

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size	Type	Temp. Range, °F	Dielectric Strength, V/mil	Color	Specifications Met	Pkg. Qty.		Pkg.
DuPont Molykote 4 Electrical Insulating Compound—Silica Thickener
2-3	Synthetic	__	5.3 oz.	Tube	-40° to 400°	450	White	SAE AS8660, FDA Compliant 21 CFR 175.300, NSF/ANSI 61, NSF/ANSI 51	12	00000000	0000000
Silica Thickener
1	Synthetic	Silicone	4 oz.	Tube	-40° to 400°	350	Clear	NSF Registered H1	12	00000000	000000

Grease for Electrical Contacts

Lubricate, clean, deoxidize, and prevent corrosion on electrical contacts to improve their performance.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 2 is about the consistency of peanut butter.

Grease with only deoxidizer provides the best lubrication and is for use on clean surfaces.

Grease lubricates most efficiently within the listed temperature range. Melting temperature is the point at which grease will fail and run out of equipment, leaving it to run dry.

			Container						Each
NLGI Viscosity Grade	Base Oil	Additive	Size, oz.	Type	Temp. Range, °F	Melting Temp., °F	Dielectric Strength, V/mil	Color		Each
Lithium Thickener
2	Synthetic	Deoxidizer	8	Tube	-30° to 200°	285°	115	Amber	000000	000000

Electrical-Insulating Grease

Also known as dielectric grease, use insulating grease to lubricate and protect electrical systems. It resists water and corrosion. This grease can be used on most rubber and plastic.

Dielectric strength measures the maximum voltage a grease can withstand without losing its insulating properties. The higher the dielectric strength, the better its quality as an insulator.

Grease lubricates most efficiently below the maximum temperature. Nonmelting grease can be used at temperatures above the maximum temperature briefly, but then will break down more quickly.

Molykote 5 Compound is for use on insulators, bushings, and high-current switches.

Each

		Container
NLGI Viscosity Grade	Base Oil	Size	Type	Temp. Range, °F	Melting Temp.	Dielectric Strength, V/mil	Color		Each
DuPont Molykote 5 Compound—Silica Thickener
3	Synthetic	5.3 oz.	Tube	-65° to 450°	Not Rated	545	Gray	0000000	000000
Silica Thickener
1	Synthetic	5.3 oz.	Tube	-50° to 400°	Not Rated	385	White	0000000	00000
1	Synthetic	14 oz.	Grease Gun Cartridge	-50° to 400°	Not Rated	385	White	0000000	00000
1	Synthetic	16 oz.	Jar	-50° to 400°	Not Rated	385	White	0000000	00000
2	Synthetic	0.2 oz.	One-Time-Use Pack	-40° to 400°	Not Rated	830	White	0000000	0000
2	Synthetic	5.3 oz.	Tube	-40° to 400°	Nonmelting	830	White	0000000	00000
2	Synthetic	14 oz.	Grease Gun Cartridge	-40° to 400°	Nonmelting	830	White	0000000	00000

Package

		Container
NLGI Viscosity Grade	Base Oil	Size	Type	Temp. Range, °F	Melting Temp.	Dielectric Strength, V/mil	Color	Pkg. Qty.		Pkg.
DuPont Molykote 5 Compound—Silica Thickener
3	Synthetic	5.3 oz.	Tube	-65° to 450°	Not Rated	545	Gray	12	00000000	0000000
Silica Thickener
1	Synthetic	5.3 oz.	Tube	-50° to 400°	Not Rated	385	White	12	00000000	000000
1	Synthetic	16 oz.	Jar	-50° to 400°	Not Rated	385	White	16	00000000	000000
2	Synthetic	5.3 oz.	Tube	-40° to 400°	Nonmelting	830	White	12	00000000	000000

Electrically Conductive Antiseize Lubricants

Copper allows these lubricants to conduct electricity, while graphite gives them good chemical and corrosion resistance. Also known as thread lubricants, antiseize lubricants prevent threaded fasteners and close-fitting parts from locking together due to corrosion, contamination, or heat.

Loctite® C5-A Copper-Based Anti-Seize lubricants can be used with salt water and petroleum-based chemicals. LB 8065 comes as a stick for no-mess application.

Lubricants that meet MIL-A-907 and MIL-PRF-907 have been tested to prevent corrosion of copper and for antiseize properties when used with steel nuts and studs.

Dielectric strength measures the maximum voltage a lubricant can withstand without losing its insulating properties. The higher the dielectric strength, the better its quality as an insulator.

Electrical resistivity is a measure of how well a material opposes the flow of electricity. The lower the rating, the more electricity it conducts.

Each

Container
Size	Type	Additive	Electrical Resistivity	Dielectric Strength, V/mil	Temp. Range, °F	Color	Specifications Met	Compatible With		Each
Loctite® LB 8008 C5-A Copper-Based Anti-Seize
0.1 oz.	One-Time-Use Pack	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	000000	00000
0.2 oz.	One-Time-Use Pack	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	0000
1 oz.	Tube	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	0000
4 oz.	Brush-Top Can	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	00000
4 oz.	Tube	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	00000
8 oz.	Brush-Top Can	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	00000
10 oz.	Brush-Top Can	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	00000
1 lbs.	Brush-Top Can	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	00000
1 lbs.	Can	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	00000
2.5 lbs.	Can	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	000000	00000
8 lbs.	Can	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	000000
42 lbs.	Pail	Copper, Graphite	Not Rated	Not Rated	-20° to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	000000
Loctite® LB 8065 C5-A Copper-Based Anti-Seize
0.7 oz.	Stick	Copper, Graphite	Not Rated	Not Rated	Not Rated to 1800°	Copper	__	Aluminum, Brass, Copper, Iron, Plastic, Stainless Steel, Steel	0000000	0000
Lubricants
4 oz.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	0000000	00000
8 oz.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Silver	MIL-PRF-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	00000000	00000
8 oz.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	0000000	00000
12 oz.	Aerosol Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	0000000	00000
16 oz.	Grease Gun Cartridge	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	0000000	00000
1 lbs.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Silver	MIL-PRF-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	00000000	00000
1 lbs.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	0000000	00000
2 lbs.	Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	0000000	00000
1 gal.	Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	0000000	000000

Package

Container
Size	Type	Additive	Electrical Resistivity	Dielectric Strength, V/mil	Temp. Range, °F	Color	Specifications Met	Compatible With	Pkg. Qty.		Pkg.
Lubricants
4 oz.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	24	00000000	0000000
8 oz.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Silver	MIL-PRF-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	12	000000000	000000
8 oz.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	12	00000000	000000
12 oz.	Aerosol Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	12	00000000	000000
16 oz.	Grease Gun Cartridge	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	12	00000000	000000
1 lbs.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Silver	MIL-PRF-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	12	000000000	000000
1 lbs.	Brush-Top Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	12	00000000	000000
2 lbs.	Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	6	00000000	000000
1 gal.	Can	Copper, Graphite	3.5×10⁹ ohms-cm	13.4	-65° to 2000°	Copper	MIL-A-907	Aluminum, Brass, Carbide, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	4	00000000	000000

Heat-Transfer Potting Compounds

Formulated to draw heat away from sensitive electronic components, these potting compounds have higher thermal conductivity than standard potting compounds. Use them to encase electronic assemblies for protection from dust, chemicals, moisture, mechanical shock, and vibration. Rigid and wear resistant, epoxies are the strongest of the potting compounds. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation.

Cartridge potting compound requires a gun and mixer nozzle (each sold separately) to dispense.

One-Time-Use Packet Compounds—Extra Hard

		Dry Time
Container Size, oz.	Consistency	Touch, min.	Overall, hrs.	Dielectric Strength, V/mil	Thermal Conductivity, W/m-K	Temp. Range, °F	Heating Requirements to Reach Full Strength	For Use On	Color		Each
1.4	Paste	90	24	410	0.95	-90° to 230°	2 hrs. @ 140° F	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass	Blue	00000000	000000

Cartridge Compounds—Extra Hard

		Dry Time
Container Size, oz.	Consistency	Touch, min.	Overall, hrs.	Dielectric Strength, V/mil	Thermal Conductivity, W/m-K	Temp. Range, °F	For Use On	Color		Each
1.7	Thick Liquid	15	8	520	1.01	-40° to 210°	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass	Black	0000000	000000

Two-Part Adhesive Dispensing Guns
Dispensing Gun for 1.7-oz. Cartridges	00000000	Each	000000

Mixer Nozzles for Two-Part Adhesive Cartridges
Mixer Nozzle for 1.7-oz. Cartridges	00000000	Each	00000

Conductive Liquid Gallium

Often used as a safe alternative to mercury in thermometers, thermostats, and switches, these gallium alloys are also good for transferring heat and electricity in soft electronics that must bend and flex. With a low melting point, they’re a liquid at room temperature. These alloys wet (stick to) both metallic and nonmetallic surfaces, and can even be used as a high-temperature lubricant for bearings. They will, however, dissolve aluminum at room temperatures and many other metals at higher temperatures. They’re also known as Galinstan.

Gallium alloys with 66.5% gallium have a lower melting temperature than those with 75.5% gallium. They are not, however, as good for transferring heat.

Gallium alloys with 75.5% gallium are better than those with 66.5% gallium for transferring heat. They also have a higher melting temperature.

Material Composition			Container
Gallium	Indium	Tin	Size, oz.	Type	Melting Temperature, °F	Maximum Temperature, °F	For Use On		Each
66.5%	20.5%	13%	0.1	Syringe	50°	930°	Glass, Nickel Alloys, Quartz, Stainless Steel, Steel	0000000	0000000
75.5%	24.5%	__	0.1	Syringe	60°	930°	Glass, Nickel Alloys, Quartz, Stainless Steel, Steel	0000000	000000

About Lubricants

About Grease

About Paint and Protective Coatings

Heat Sink Compounds

Non-Bonding Heat Transfer Compounds

Electrically and Thermally Conductive Grease

Food Industry Electrical-Insulating Grease

Grease for Electrical Contacts

Electrical-Insulating Grease

Electrically Conductive Antiseize Lubricants

Heat-Transfer Potting Compounds

Conductive Liquid Gallium