O-Ring Lubricants | McMaster-Carr

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. It is good for tight-tolerance plug valves and high-pressure seals.

Mineral-oil-based grease, derived from petroleum, is more economical than synthetic-oil-based grease. Synthetic-oil-based grease lasts longer than mineral-oil-based grease and withstands a wider range of temperatures.

Grease with lithium thickener offers good heat and moisture resistance. Grease with PTFE thickener has good heat, moisture, and oxidation resistance. Grease with silica thickener resists washing off and reduces corrosion in wet environments. Grease with barium thickener is for use with silicone rubber O-rings and seals in open systems.

Grease with moly (molybdenum disulfide) has excellent resistance to wear and can withstand high-load and high-pressure applications. Grease with PTFE has small particles of PTFE that reduce friction and help the grease maintain its lubricity. 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.

DuPont Molykote 55 O-Ring Grease is silicone-based, so it can be used with most rubbers and plastics. Not recommended for use with silicone rubber, polycarbonate plastic, or ABS plastic. Chemours Krytox™ 240AC Type III resists most acids, bases, solvents, and fuels, and is long lasting with an indefinite shelf life. Loctite® Krytox™ RFE PFPE LB 8209 handles extreme temperature swings, resists acids, bases, and fuels, and is long lasting. It can be used under high loads.

Jet-Lube Ezy-Open is a grease-like liquid that contains detergent and PTFE additives to clean more effectively than grease while it lubricates. Since it is a liquid, it does not have a NLGI viscosity grade, but is less viscous than anything else in our offering.

Each

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size	Type	Temp. Range, °F	Melting Temp., °F	Color	Specifications Met		Each
DuPont Molykote 55 O-Ring Grease—Lithium Thickener
2	Synthetic	Moly	5.3 oz.	Tube	-85° to 350°	425°	White	__	0000000	000000
2	Synthetic	Moly	8 lbs.	Pail	-85° to 350°	425°	White	__	0000000	000000
Chemours Krytox™ 240AC Type III—PTFE Thickener
2	Synthetic	__	2 oz.	Tube	-30° to 550°	Not Rated	White	MIL-PRF-27617	00000000	000000
2	Synthetic	__	8 oz.	Tube	-30° to 550°	Not Rated	White	MIL-PRF-27617	00000000	000000
Loctite® Krytox™ RFE PFPE LB 8209—PTFE Thickener
2	Synthetic	__	2 oz.	Tube	-15° to 500°	Not Rated	White	__	0000000	00000
Jet-Lube Ezy-Open Liquid—Silica Thickener
__	Synthetic	PTFE	35 lbs.	Pail	-10° to 400°	Not Rated	Amber	__	0000000	000000
Lubriplate Aero—Lithium Thickener
1	Mineral	Zinc	1.8 oz.	Tube	-70° to 250°	380°	Off-White	__	0000000	0000
Barium Thickener
2	Mineral	__	4 oz.	Tube	0° to 300°	410°	Amber	__	0000000	00000
Silica Thickener
3	Vegetable	__	14 oz.	Grease Gun Cartridge	0° to 400°	Not Rated	Amber	__	0000000	00000

Package

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size	Type	Temp. Range, °F	Melting Temp., °F	Color	Pkg. Qty.		Pkg.
DuPont Molykote 55 O-Ring Grease—Lithium Thickener
2	Synthetic	Moly	5.3 oz.	Tube	-85° to 350°	425°	White	12	00000000	0000000
Lubriplate Aero—Lithium Thickener
1	Mineral	Zinc	1.8 oz.	Tube	-70° to 250°	380°	Off-White	36	00000000	000000
Barium Thickener
2	Mineral	__	4 oz.	Tube	0° to 300°	410°	Amber	24	00000000	000000
Silica Thickener
3	Vegetable	__	14 oz.	Grease Gun Cartridge	0° to 400°	Not Rated	Amber	30	00000000	000000

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, 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, 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

Vacuum Seal and O-Ring Grease

A firm consistency and resistance to evaporation make this grease ideal for 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 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 and is comparable to Fomblin grease. NLGI 4 is about the consistency of frozen yogurt.

Grease with PTFE thickener resists aggressive acids, bases, and solvents. Chemours Krytox™ 240 grease is long lasting with an indefinite shelf life.

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. 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	Size	Type	Temp. Range, °F	Melting Temp., °F	Maximum Vacuum @ Temperature	Color	Specifications Met		Each
DuPont Molykote High Vacuum Grease—Silica Thickener
3-4	Synthetic	5.3 oz.	Tube	-40° to 400°	Nonmelting	10^-6 torr @ 72° F	White	__	0000000	000000
3-4	Synthetic	8 lbs.	Pail	-40° to 400°	Nonmelting	10^-6 torr @ 72° F	White	__	0000000	000000
Chemours Krytox™ 240AB Type II—PTFE Thickener
2	Synthetic	0.5 oz.	Tube	-40° to 450°	Not Rated	5×10^-6 torr @ 100° F	White	MIL-PRF-27617	00000000	00000
2	Synthetic	2 oz.	Tube	-40° to 450°	Not Rated	5×10^-6 torr @ 100° F	White	MIL-PRF-27617	00000000	000000
Chemours Krytox™ 240AZ Type I—PTFE Thickener
1	Synthetic	0.5 oz.	Tube	-70° to 300°	Nonmelting	4×10^-4 torr @ 100° F	White	MIL-PRF-27617	00000000	00000
1	Synthetic	2 oz.	Tube	-70° to 300°	Nonmelting	4×10^-4 torr @ 100° F	White	MIL-PRF-27617	00000000	000000
PTFE Thickener
3	Synthetic	3.5 oz.	Tube	0° to 480°	525°	7.5×10^-4 torr @ 72° F	White	__	0000000	000000

Package

		Container
NLGI Viscosity Grade	Base Oil	Size	Type	Temp. Range, °F	Melting Temp., °F	Maximum Vacuum @ Temperature	Color	Pkg. Qty.		Pkg.
DuPont Molykote High Vacuum Grease—Silica Thickener
3-4	Synthetic	5.3 oz.	Tube	-40° to 400°	Nonmelting	10^-6 torr @ 72° F	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 2 is about the consistency of peanut butter. NLGI 3 is about the consistency of vegetable shortening.

Grease with moly (molybdenum disulfide) has excellent resistance to wear and can withstand high-load and high-pressure applications. 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
DuPont Molykote 3452 Chemical Resistant—Fluorocarbon Thickener
2-3	Synthetic	Moly	7.8	Tube	-20° to 450°	570°	White	0000000	0000000
2-3	Synthetic	Moly	19.4	Grease Gun Cartridge	-20° to 450°	570°	White	0000000	000000
Fluorinated Polymer Thickener
3	Synthetic	PTFE	3.5	Tube	-20° to 450°	570°	White	0000000	00000
3	Synthetic	PTFE	19.4	Grease Gun Cartridge	-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.
DuPont Molykote 3452 Chemical Resistant—Fluorocarbon Thickener
2-3	Synthetic	Moly	7.8	Tube	-20° to 450°	570°	White	12	00000000	000000000
Fluorinated Polymer Thickener
3	Synthetic	PTFE	3.5	Tube	-20° to 450°	570°	White	12	0000000	000000

Stop Cock Grease

This thin grease goes on as a film to form a seal in glass and metal stop cocks. It won't react with laboratory chemicals, such as hydrochloric acid, sulfuric acid, potassium hydroxide, and salt solutions.

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.

Each

	Container
Base Oil	Size, oz.	Type	Temp. Range, °F	Melting Temp., °F	Color		Each
Semisynthetic	2.7	Tube	Not Rated to 120°	125°	Amber	0000000	000000

Package

	Container
Base Oil	Size, oz.	Type	Temp. Range, °F	Melting Temp., °F	Color	Pkg. Qty.		Pkg.
Semisynthetic	2.7	Tube	Not Rated to 120°	125°	Amber	12	0000000	0000000

Food Industry Seal and O-Ring Grease

This grease meets NSF/ANSI Standard 51 and FDA Compliant 21 CFR 175.300 for direct contact with food and NSF/ANSI Standard 61 for use with components that come into contact with drinking water. Formulated with silica thickener and silicone, it resists washing away and has excellent resistance to wear. Apply directly to seals and O-rings to prevent drying and cracking.

NLGI viscosity grade is a rating of a grease's consistency. NLGI 3-4 is between the consistencies of vegetable shortening and frozen yogurt.

Grease lubricates most efficiently within the listed temperature range.

Each

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size	Type	Temp. Range, °F	Melting Temp.	Color	Specifications Met		Each
DuPont Molykote 111 Compound—Silica Thickener
3-4	Synthetic	Silicone	5.3 oz.	Tube	-40° to 400°	Not Rated	White	FDA Compliant 21 CFR 175.300, NSF/ANSI 51, NSF/ANSI 61	0000000	000000
3-4	Synthetic	Silicone	14 oz.	Grease Gun Cartridge	-40° to 400°	Not Rated	White	FDA Compliant 21 CFR 175.300, NSF/ANSI 51, NSF/ANSI 61	0000000	00000
3-4	Synthetic	Silicone	8 lbs.	Pail	-40° to 400°	Not Rated	White	FDA Compliant 21 CFR 175.300, NSF/ANSI 51, NSF/ANSI 61	0000000	000000

Package

			Container
NLGI Viscosity Grade	Base Oil	Additive	Size	Type	Temp. Range, °F	Melting Temp.	Color	Specifications Met	Pkg. Qty.		Pkg.
DuPont Molykote 111 Compound—Silica Thickener
3-4	Synthetic	Silicone	5.3 oz.	Tube	-40° to 400°	Not Rated	White	FDA Compliant 21 CFR 175.300, NSF/ANSI 51, NSF/ANSI 61	12	00000000	0000000
3-4	Synthetic	Silicone	14 oz.	Grease Gun Cartridge	-40° to 400°	Not Rated	White	FDA Compliant 21 CFR 175.300, NSF/ANSI 51, NSF/ANSI 61	10	00000000	000000

Clean Room Seal and O-Ring Grease

Highly pure, this grease is chemically inert, so it won’t contaminate sensitive environments or react with other substances. Due to its low vapor pressure, it resists evaporation, even at high temperatures. Apply directly to seals and O-rings to prevent drying and cracking.

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

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.

Each

		Container
NLGI Viscosity Grade	Base Oil	Size, oz.	Type	Temp. Range, °F	Melting Temp.	Color		Each
Chemours Krytox™ LVP—PTFE Thickener
2	Synthetic	2	Tube	5° to 570°	Nonmelting	White	00000000	0000000
2	Synthetic	8	Tube	5° to 570°	Nonmelting	White	00000000	000000
2	Synthetic	14	Grease Gun Cartridge	5° to 570°	Not Rated	White	00000000	00000000

Package

		Container
NLGI Viscosity Grade	Base Oil	Size, oz.	Type	Temp. Range, °F	Melting Temp.	Color	Pkg. Qty.		Pkg.
Chemours Krytox™ LVP—PTFE Thickener
2	Synthetic	2	Tube	5° to 570°	Nonmelting	White	6	000000000	0000000

Seal and O-Ring Oil

Apply directly to seals and O-rings to extend service life by preventing drying and cracking. This oil can be used with virtually any rubber polymer, including Buna-N and neoprene.

Viscosity is the thickness of an oil. Rated at 100,000 centistokes (cSt), this oil has the consistency of honey, so it stays in place.

Each

	Container
Viscosity, cSt	Size, oz.	Type	Temp. Range, °F	Color	With Detergent		Each
Silicone Synthetic Base Oil
100,000	2	Tube	-65° to 400°	Clear	No	0000000	000000

Package

	Container
Viscosity, cSt	Size, oz.	Type	Temp. Range, °F	Color	With Detergent	Pkg. Qty.		Pkg.
Silicone Synthetic Base Oil
100,000	2	Tube	-65° to 400°	Clear	No	12	00000000	0000000

Assembly Lubricants for Rubber and Plastic

For hoses and other tight-fitting parts, apply these lubricants to rubber or plastic before assembling and disassembling. After drying, they lose their lubricity, so parts stay together. They leave no residue on assembled parts.

Semisynthetic-oil-based lubricants are a mix of synthetic and vegetable oil and are compatible with most plastic and rubber. They’re frequently used with hoses, O-rings, seals, and rubber grips. Water-based lubricants are designed for use with polyurethane and vinyl conveyor roller covers.

Each

Container
Size, oz.	Type	Temp. Range, °F	Compatible With		Each
Semisynthetic Oil Base
0.3	Tube	40° to 85°	Aluminum, Carbide, Cast Iron, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	000000	00000
16.1	Bottle	40° to 85°	Aluminum, Carbide, Cast Iron, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	000000	00000
16.1	Spray Bottle	40° to 85°	Aluminum, Carbide, Cast Iron, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	000000	00000
Water Base
32	Spray Bottle	Not Rated	Aluminum, Brass, Carbide, Cast Iron, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	0000000	00000

Package

Container
Size, oz.	Type	Temp. Range, °F	Compatible With	Pkg. Qty.		Pkg.
Semisynthetic Oil Base
0.3	Tube	40° to 85°	Aluminum, Carbide, Cast Iron, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	100	000000	0000000
16.1	Bottle	40° to 85°	Aluminum, Carbide, Cast Iron, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	12	000000	000000
16.1	Spray Bottle	40° to 85°	Aluminum, Carbide, Cast Iron, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	6	000000	00000

Food Industry Assembly Lubricants

For use in food-processing and preparation areas, these lubricants are rated for incidental food contact. Coat tight-fitting parts with them before sliding together to make assembly easier.

Mineral-oil-based lubricants have a high load-carrying capacity and can lubricate sliding loads at low-to-medium speeds. Synthetic-oil-based lubricants have excellent moisture resistance.

Each

Container
Size	Type	Temp. Range, °F	Specifications Met	Compatible With		Each
DuPont Molykote P-1900 Anti-Seize Paste—Mineral Base Oil
1 lbs.	Can	-20° to 570°	FDA Compliant 21 CFR 178.3570, NSF Registered H1	Aluminum, Brass, Carbide, Cast Iron, Copper, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	000000	000000
Lubricants—Synthetic Base Oil
4 oz.	Tube	-40° to 350°	NSF Registered H1	Aluminum, Brass, Carbide, Cast Iron, Copper, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	0000000	0000

Package

Container
Size	Type	Temp. Range, °F	Specifications Met	Compatible With	Pkg. Qty.		Pkg.
Lubricants—Synthetic Base Oil
4 oz.	Tube	-40° to 350°	NSF Registered H1	Aluminum, Brass, Carbide, Cast Iron, Copper, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	12	00000000	000000

Assembly Lubricants

Coat tight-fitting metal parts, such as gears, clutches, and press-fit assemblies, with these lubricants before sliding them together to make assembly easier. Once assembled, they provide initial lubrication in equipment before oil has a chance to flow.

Mineral-oil-based lubricants, derived from petroleum, are more economical than synthetic-oil-based lubricants. Synthetic-oil-based lubricants last longer than mineral-oil-based lubricants.

Lubricants with moly (molybdenum disulfide) withstand high-pressure applications and have excellent wear resistance. Lubricants with graphite have additional pressure resistance and excellent temperature resistance. Lubricants with zinc prevent corrosion.

All Dupont Molykote lubricants have a high load-carrying capacity. Molykote M-77 Paste is commonly used on brakes and clutches; it is compatible with material that is damaged by mineral oil, such as natural rubber, SBR, and EPDM. As a paste it lubricates to 445° F; after drying, it continues to lubricate at temperatures up to 660° F. Molykote G-Rapid Plus Paste is often used to assemble threaded spindles, gears, screws, and pumps. It can be used as an initial lubricant. Molykote DX Paste has good corrosion resistance. It provides long-lasting lubrication after assembly.

Lubriplate No. 105 is often used to assemble motor and engine components. It has excellent moisture resistance.

Container					Each		Package
Size	Type	Additive	Temp. Range, °F	Compatible With		Each	Pkg. Qty.		Pkg.
Mineral Base Oil
DuPont Molykote G-Rapid Plus Paste
8.8 oz.	Jar	Graphite, Moly	-30° to 840°	Aluminum, Brass, Carbide, Cast Iron, Copper, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	000000	000000	10	000000	0000000
DuPont Molykote G-Rapid Plus Spray
13.5 oz.	Aerosol Can	Graphite, Moly	-30° to 750°	Aluminum, Brass, Carbide, Cast Iron, Copper, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	000000	00000	12	000000	000000
DuPont Molykote DX Paste
2.2 lbs.	Can	__	-15° to 255°	Aluminum, Brass, Carbide, Cast Iron, Copper, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	000000	000000	__	000000	00
Lubriplate Lubriplate No. 105
10 oz.	Tube	Zinc	-25° to 140°	Aluminum, Brass, Carbide, Cast Iron, Copper, Glass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium	000000	0000	36	000000	000000
Synthetic Base Oil
DuPont Molykote M-77 Paste
33.3 oz.	Jar	Moly	-50° to 750°	Aluminum, Brass, Carbide, Cast Iron, Copper, Fiberglass, Glass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, Titanium	000000	000000	12	000000	00000000

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