NLGI No. 3 Grease | McMaster-Carr

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NLGI Consistency Grade

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Thickener

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LB 8423 Dielectric Grease

Lubriplate Gear Shield Extra Heavy

Molykote 5 Compound

Molykote 112 High Performance

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Base Oil

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Electrically Insulating

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FDA Compliant 21 CFR 178.3570

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41 Products

About Grease

About Lubricants

Tackier than gear box grease, this grease sticks to open gears and roller chain. It resists moisture for corrosion protection and can lubricate under heavy loads.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 3 is about the consistency of vegetable shortening.

Mineral-oil-based grease, derived from petroleum, is more economical than synthetic-oil-based grease.

Grease with lithium thickener offers good heat and moisture resistance. Grease with asphalt thickener is thicker for excellent adhesion to chain and open gears. Grease with zinc neutralizes acid and is a good replacement for leaded grease.

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.

Each

			Container
NLGI Viscosity Grade	Base Oil	Additive	Net Weight	Type	Temp. Range, °F	Melting Temp., °F	Color		Each
Lubriplate Gear Shield Extra Heavy—Asphalt and Lithium Thickener
3	Mineral	Zinc	10.5 oz.	Caulk Gun Cartridge	20° to 275°	370°	Black	000000000	000000
3	Mineral	Zinc	11 oz.	Aerosol Can	20° to 275°	370°	Black	000000000	00000

Package

			Container
NLGI Viscosity Grade	Base Oil	Additive	Net Weight	Type	Temp. Range, °F	Melting Temp., °F	Color	Pkg. Qty.		Pkg.
Lubriplate Gear Shield Extra Heavy—Asphalt and Lithium Thickener
3	Mineral	Zinc	10.5 oz.	Caulk Gun Cartridge	20° to 275°	370°	Black	40	000000000	0000000
3	Mineral	Zinc	11 oz.	Aerosol Can	20° to 275°	370°	Black	12	000000000	000000

Food Industry Open Gear and Chain Grease

For use in food-processing and preparation areas, this grease is NSF registered H1 or meets FDA Compliant 21 CFR 178.3570 for incidental contact with food. It's tacky to stick to open gears and roller chain.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 3 is about the consistency of vegetable shortening.Synthetic-oil-based grease has longer-lasting performance than mineral-oil-based grease. Made with PTFE thickener, it has excellent heat and moisture resistance. It is best for low-speed, high-torque gears and chain.

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

Each

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size, fl. oz.	Type	Temp. Range, °F	Melting Temp., °F	Color	Specifications Met		Each
PTFE Thickener
3	Synthetic	PTFE	19	Grease Gun Cartridge	-58° to 300°	Nonmelting	White	FDA Compliant 21 CFR 178.3570, NSF Registered H1	0000000	000000

Package

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size, fl. oz.	Type	Temp. Range, °F	Melting Temp., °F	Color	Specifications Met	Pkg. Qty.		Pkg.
PTFE Thickener
3	Synthetic	PTFE	19	Grease Gun Cartridge	-58° to 300°	Nonmelting	White	FDA Compliant 21 CFR 178.3570, NSF Registered H1	10	0000000	0000000

High-Vacuum Seal and O-Ring Grease

A firm consistency and resistance to evaporation make this grease ideal for high-vacuum applications, such as flow meters, vacuum and pressure systems, and laboratory equipment. Apply directly to seals and O-rings to prevent drying and cracking.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 3 is about the consistency of vegetable shortening and is comparable to Fomblin grease.

Grease with PTFE thickener resists aggressive acids, bases, and solvents.

Grease lubricates most efficiently below the maximum temperature. 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	Size, fl. oz.	Type	Temp. Range, °F	Melting Temp., °F	Maximum Vacuum @ Temperature	Color		Each
PTFE Thickener
3	Synthetic	3 1/2	Tube	0° to 480°	525°	10 ^-4 torr @ 72° F	White	0000000	0000000

Moisture-Resistant Seal and O-Ring Grease

Thickened with silica, this heavy grease clings to parts so it won't wash off in wet environments. Apply directly to plastic and rubber seals and O-rings to prevent drying and cracking.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 3 is about the consistency of vegetable shortening.

Grease lubricates most efficiently within the listed temperature range.

Each

		Container
NLGI Viscosity Grade	Base Oil	Size, fl. oz.	Type	Temp. Range, °F	Melting Temp.	Color		Each
DuPont Molykote 112 High Performance—Silica Thickener
3	Synthetic	5.3	Tube	-40° to 450°	Not Rated	White	0000000	000000

Package

		Container
NLGI Viscosity Grade	Base Oil	Size, fl. oz.	Type	Temp. Range, °F	Melting Temp.	Color	Pkg. Qty.		Pkg.
DuPont Molykote 112 High Performance—Silica Thickener
3	Synthetic	5.3	Tube	-40° to 450°	Not Rated	White	12	00000000	0000000

Chemical-Resistant Seal and O-Ring Grease

Fluorocarbon and fluorinated polymer thickeners add chemical resistance to this grease. It remains intact when exposed to water and most solvents and chemicals. Apply directly to plastic and rubber seals and O-rings to prevent drying and cracking.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 3 is about the consistency of vegetable shortening.

Grease with PTFE has small particles of PTFE that reduce friction and help the grease maintain its lubricity. It’s not for use with ketones, such as acetone and MEK.

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.

Each

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size, oz.	Type	Temp. Range, °F	Melting Temp., °F	Color		Each
Fluorinated Polymer Thickener
3	Synthetic	PTFE	3.5	Tube	-20° to 450°	570°	White	0000000	000000

Package

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size, oz.	Type	Temp. Range, °F	Melting Temp., °F	Color	Pkg. Qty.		Pkg.
Fluorinated Polymer Thickener
3	Synthetic	PTFE	3.5	Tube	-20° to 450°	570°	White	12	0000000	0000000

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.

NLGI viscosity grade is a rating of a grease's consistency. 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 lubricates most efficiently below the maximum temperature.

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

Each

		Container
NLGI Viscosity Grade	Base Oil	Size, fl. oz.	Type	Temp. Range, °F	Melting Temp.	Dielectric Strength, V/mil	Color		Each
DuPont Molykote 5 Compound—Silica Thickener
3	Synthetic	5.3	Tube	-65° to 450°	Not Rated	545	Gray	0000000	000000
Loctite® LB 8423 Dielectric Grease—Silica Thickener
3	Synthetic	0.3	Tube	-65° to 400°	Not Rated	500	Clear	0000000	0000

Package

		Container
NLGI Viscosity Grade	Base Oil	Size, fl. oz.	Type	Temp. Range, °F	Melting Temp.	Dielectric Strength, V/mil	Color	Pkg. Qty.		Pkg.
DuPont Molykote 5 Compound—Silica Thickener
3	Synthetic	5.3	Tube	-65° to 450°	Not Rated	545	Gray	12	00000000	0000000

Wire Rope and Cable Grease

Penetrate to the core of wire rope, preventing rust and reducing wear between strands. This grease has excellent corrosion resistance and is suitable for use in marine environments. It is thick to stay in place at high wire rope travel speeds.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 3 is about the consistency of vegetable shortening.

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

		Container
NLGI Viscosity Grade	Base Oil	Size, gal.	Type	Temp. Range, °F	Melting Temp.	Color		Each
Clay Thickener
3	Mineral	5	Pail	5° to 400°	Nonmelting	Amber	0000000	0000000

Grease Dispensers

A spring delivers a constant, low-pressure flow of grease to your lubrication point, so it never runs dry. They’re best for applications with consistent temperatures, so the viscosity of the grease won’t change how quickly it flows. However, they shouldn’t be used in precision applications because the tension of the spring may change, causing the dispensing rate to change. Mount them close to the lubrication point. They have a standard grease fitting, so you can choose what grease to use, unlike prefilled dispensers. The grease fitting helps close the system to keep out dust and contaminants in dirty environments such as mills. Use grease fitting adapters to match your lubrication point.

Dispensers with a clear plastic bowl make it easy to see how much grease is left and whether the dispenser is working properly. These dispensers come with three different adjustment springs to fit your dispensing needs.

Dispensers with a steel bowl are more durable than dispensers with a plastic bowl, so they’re the better choice if there's vibration or impact.

Plastic housings are an economical choice when there's minimal vibration. Aluminum housings withstand vibration, shock, and impact. Nickel-chrome-plated aluminum housings resist corrosion better than plastic and aluminum dispensers.

Remote-mount springs (sold separately) provide extra pressure when using thick grease at a distance.

Remote-mount kits include a mounting bracket, tubing, and fittings.

Grease Dispensers

Plastic Bowl

Steel Bowl

Grease Dispensers
					Grease Outlet							Each		Remote-Mount Springs
Cap., fl. oz.	For NLGI Viscosity Grade	Max. Grease Outlet Pressure, psi	Bowl Dia.	Overall Ht.	Thread Type	Pipe Size	Gender	Max. Distance from Lubrication Point, ft.	Loading Method	Temp. Range, °F		1-5	6-Up		Each
Plastic Bowl—Clear
Plastic Housing
1	0, 1, 2, 3, 4	5	1 3/4"	3 5/8"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	000000	000000	0000000	00000
2	0, 1, 2, 3, 4	5	2 3/8"	4 5/8"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	00000	00000	0000000	0000
6	0, 1, 2, 3, 4	5	3"	6"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	000000	00000	0000000	00000
Anodized Aluminum Housing
1	0, 1, 2, 3, 4	5	1 3/4"	3 5/8"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	00000	00000	0000000	0000
2	0, 1, 2, 3, 4	5	2 3/8"	4 5/8"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	000000	000000	0000000	0000
6	0, 1, 2, 3, 4	5	3"	6"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	000000	000000	0000000	00000
Nickel-Chrome-Plated Aluminum Housing
1	0, 1, 2, 3, 4	5	1 3/4"	3 5/8"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	000000	000000	0000000	0000
2	0, 1, 2, 3, 4	5	2 3/8"	4 5/8"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	000000	000000	0000000	0000
6	0, 1, 2, 3, 4	5	3"	6"	NPT	1/8	Male	6	Grease Gun	-10° to 250°	0000000	000000	000000	0000000	00000
												1-2	3-Up
Steel Bowl—Opaque
Steel Housing
1/2	1, 2, 3	Not Rated	1 1/4"	4 3/16"	NPT	1/8	Male	Not Rated	Grease Gun	32° to 160°	0000000	000000	000000	000000	00
1 3/4	1, 2, 3	Not Rated	2 1/2"	4 5/16"	NPT	3/8	Male	Not Rated	Grease Gun	32° to 160°	0000000	000000	000000	000000	00
3 1/2	1, 2, 3	Not Rated	2 1/2"	6 3/16"	NPT	3/8	Male	Not Rated	Grease Gun	32° to 160°	0000000	000000	000000	000000	00
8	1, 2, 3	Not Rated	3 1/4"	9 3/4"	NPT	3/4	Male	Not Rated	Grease Gun	32° to 160°	0000000	000000	000000	000000	00

Remote-Mount Kits for Grease Dispensers with Plastic Bowl

Shown with Dispenser (Sold Separately)

Grease Outlet			Grease Inlet			Tube			Mounting
Thread Type	Thread Size	Gender	Thread Type	Inlet Pipe Size	Gender	Lg., ft.	OD	Material	Hole Dia.	No. of Holes	Fasteners Included		Each
SAE-LT	1/4"-28	Male	NPT	1/8	Female	10	1/4"	Nylon Plastic	3/8"	2	No	00000000	000000

Multiple-Outlet Precision Motor-Driven Grease Dispensers

Send precise amounts of grease to multiple lubrication points at regular intervals, so each point will always have the grease it needs. These dispensers have a pump for each outlet, so they can send different amounts of grease to each lubrication point. It also means the lubrication points can be different distances from the dispenser. Because they’re motor driven, they’ll dispense correctly even if temperature changes affect the grease consistency. They’re also unaffected by back pressure. Unlike spring- and gas-driven dispensers, they don’t need to be mounted close to their lubrication points. To prevent over-lubrication when your machine is down, there’s a button to cut off the flow without uninstalling the dispenser. You can also integrate them into a system that’s controlled by a PLC and program them to only grease when your machine is running and not when it's down. This is useful for systems with intermittent downtime.

Use the digital display to input your flow settings. It also shows you the grease levels and the time until the dispenser empties, helping you plan for maintenance. Lights indicate the status of your dispenser, so you can see at a glance if it's operating. If it's not operating correctly, you'll see error and feedback messages on the display.

To match your lubrication point, use grease fitting adapters.

IP68 rated dispensers are dust tight and seal out water from temporary submersion.

Empty cartridges can be filled with the grease of your choice. Attach a cartridge filling adapter (sold separately) to make the filling process quick and mess free. Grease-filled cartridges save you from the mess and contamination risk that comes with filling a grease cartridge yourself. They also reduce the chance you’ll fill a lubrication point with the wrong grease.

Mobil Polyrex EM grease handles moderate loads at high speeds, making it a good choice for electric motor bearings in fans, pumps, and dryers. White mineral grease is NSF registered H1, so it’s safe for incidental contact with food. Red mineral grease is great for a wide range of bearings because it resists wear. Semisynthetic grease works with most machinery.

Grease with a polyurea thickener has excellent heat resistance and good moisture and oxidation resistance. Grease with a lithium thickener offers good heat and moisture resistance. Grease with an aluminum thickener has good moisture resistance and excellent oxidation resistance.

Grease Dispensers

8 Grease Outlets

8 Grease Outlets (Bottom)

0.005 oz. per Cycle—1/4 BSPP Female Grease Outlet
No. of Grease Outlets	Capacity, fl. oz.	For NLGI Viscosity Grade	Max. Grease Outlet Pressure, psi	Max. Distance from Lubrication Point, ft.	Loading Method	Wire Connection Type	Includes	Environmental Rating		Each
8	27	000, 00, 0, 1, 2, 3	1,015	30	Bulk Filler Pump	Wire Leads	One Empty 33 oz. Grease Cartridge	IP68	0000000	000000000

Empty Cartridges

For Dispenser No. of Grease Outlets	Grease Capacity, oz.	For NLGI Viscosity Grade		Each
8	27	000, 00, 0, 1, 2, 3	0000000	000000

Cartridge Filling Adapters

For Dispenser No. of Grease Outlets	Pipe Size	Thread Type	Gender	Shape	Grease Fitting Style	Material		Each
8	1/4	BSPP	Female	Straight	Standard	Aluminum	0000000	0000000

Grease-Filled Cartridges

Mobil Polyrex EM—Polyurea Thickener with Mineral Base
For Dispenser No. of Grease Outlets	Grease Capacity, oz.	For NLGI Viscosity Grade	Grease Color	Bowl Material	Specifications Met		Each
8	27	2	Blue	Plastic	__	0000000	000000
Aluminum Thickener with Mineral Base
8	27	2	White	Plastic	NSF Registered H1	0000000	000000
Lithium Thickener with Mineral Base
8	27	2	Red	Plastic	__	0000000	00000
Lithium Thickener with Semisynthetic Base
8	27	2	Brown	Plastic	__	0000000	00000

Remote-Mount Accessories

Bracket

Tube

		Bracket				Tube
For Dispenser No. of Grease Outlets	Component	Lg.	Wd.	Dp.	Mounting Fasteners Included	OD	Lg., ft.	Material	Includes		Each
8	Bracket	17 23/32"	5 29/32"	5 7/32"	Yes	__	__	__	__	0000000	0000000
8	Tube	__	__	__	__	21/64"	160	Nylon Plastic	One 1/4 BSPP Male Straight Tube Fitting One 1/8 BSPP Male Straight Tube Fitting	0000000	000000