Additives | McMaster-Carr

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96 Products

Additives and Reinforcements for Composites


Fiberglass Loose Fibers	Kevlar Loose Fibers	Flakes

Mix these additives with melted plastic, epoxies, or adhesives to make parts stronger and more wear resistant without adding much weight. You can use them in batches to tackle repairs and small parts instead of machining your part from a sheet, bar, or other shape.

Recycled Material—Recycled carbon fiber additives have a low carbon footprint to help you meet environmental goals. But, they’re not as strong or as stiff as standard carbon fiber additives.

Fiberglass for Thermoplastics and Thermosets—These additives increase a part’s strength and ability to withstand frequent blows. But, they’re not as strong or as lightweight as carbon fiber additives. They also block electric currents from passing through. Their short fibers are best for castings and foams to prevent cracking as resin shrinks. The amount you use to start should equal about 10-35% of your composite’s weight.

Carbon Fiber—Often used in vehicles to increase fuel efficiency, these additives can double your composite’s strength to make stiff pieces that are stronger and lighter in weight than aluminum. The more you add to your mixture, the stronger it becomes. These additives also carry electric currents, so they’re good for directing electromagnetic energy away from electrical devices. However, they don’t direct electricity as well as metal. They’re made of chopped fibers, which makes them ideal for repairs and intricate parts. But, they’re not as strong or as stiff as materials with continuous fibers, such as fabric and tow.

The size of carbon fiber’s particles affects its ease of use and strength. The smaller the particle size, the less effort it requires to mix. On the other hand, larger particles make parts stronger and stiffer. Choose carbon fiber with smaller particle sizes when making intricate parts and repairs.

Carbon Fiber for Thermoplastics—Carbon fiber additives for thermoplastics bond with most melted plastic pellets, except PVDF. Shape your mixture into parts with compression and injection molding or 3D printing. You can shape your finished product multiple times without losing its strength. Start by adding 10% by volume to your mixture.

Kevlar for Thermoplastics—Choose these additives when your application is likely to wear down your finished part—they improve a part’s ability to stand up to corrosion, bangs, bumps, and scrapes. They’re also used to reinforce points where honeycomb cores connect to fabric. To start, mix in 1 part Kevlar to 15 parts composite.

Carbon Fiber for Thermosets—Carbon fiber additives for thermosets mix with epoxies, adhesives, vinyl compounds, and phenolic. Use compression molding to turn your mixture into parts, or fill in cavities after curing without adding weight. You can’t shape your product once it’s cured. Begin with 5% by volume in your mixture.

		Container
	Concentration	Net Wt.	Type	Material	Form	Particle Size, μm	CAS No.		Each
Fiberglass for Thermoplastics and Thermosets



		98%	10 lb.	Jug	Plastic	Loose Fiber	840	65997-17-3	1402N34	000000


		Carbon Fiber for Thermoplastics



				91%	1 lb.	Box	Cardboard	Flake	6,350	7440-44-0	5467N11	00000


				91%	5 lb.	Box	Cardboard	Flake	6,350	7440-44-0	5467N12	000000


				Carbon Fiber for Thermosets



						91%	1 lb.	Box	Cardboard	Flake	3,175	7440-44-0	5467N15	00000


						91%	1.5 lb.	Pail	Plastic	Flake	12,000	7440-44-0	5467N21	00000
						91%	6 lb.	Pail	Plastic	Flake	12,000	7440-44-0	5467N22	000000


						Recycled Carbon Fiber for Thermoplastics



								91%	1 lb.	Box	Cardboard	Flake	6,350	7440-44-0	5467N13	00000


								91%	5 lb.	Box	Cardboard	Flake	6,350	7440-44-0	5467N14	00000


								Kevlar for Thermoplastics



										80%	2 oz.	Tube	Cardboard	Loose Fiber	1,050	26125-61-1	1402N31	00000


										80%	1 lb.	Box	Cardboard	Loose Fiber	1,050	26125-61-1	1402N32	000000

Additives and Fillers for Paints, Coatings, and Lubricants

When mixed into coatings, resins, polymers, and metals, these fillers enhance strength, conductivity, lubricity, and other physical properties.

		Container
Material	Concentration	Net Wt.	Type	Material	Form	Particle Size, μm	CAS No.		Each
Aluminum	99.9%	1 lb.	Bottle	Plastic	Powder	44	7429-90-5	1402N19	000000
Boron Carbide	97%	1 lb.	Bottle	Plastic	Powder	1 to 7	12069-32-8	1402N15	000000
Boron Nitride	99.9%	1.8 oz.	Jar	Plastic	Powder	0.5	10043-11-5	1402N13	000000
Carbon Black	100%	25 lb.	Bag	Plastic	Powder	3	1333-86-4	1402N28	000000
Cobalt Oxide	99.9%	1 lb.	Bottle	Plastic	Powder	37	7440-48-4	1402N27	000000
Copper	99.9%	1 lb.	Bottle	Plastic	Powder	44	7440-50-8	1402N18	00000
Iron	99.9%	1 lb.	Bottle	Plastic	Powder	5	7439-89-6	1402N25	00000
Manganese	97%	1 lb.	Bottle	Plastic	Powder	10	7439-96-5	1402N26	000000
Nickel	99.9%	1 lb.	Bottle	Plastic	Powder	3	7440-02-0	1402N24	000000
Silicon	99%	1 lb.	Bottle	Plastic	Powder	44	7440-21-3	1402N17	00000
Stainless Steel	99.9%	1 lb.	Bottle	Plastic	Powder	44	65997-19-5	1402N21	000000
Tin	99.9%	1 lb.	Bottle	Plastic	Powder	44	7440-31-5	1402N16	000000
Tungsten	99.9%	1 lb.	Bottle	Plastic	Powder	3	7440-33-7	1402N23	000000

Eye Wash Solutions


Bacteriostatic Additive	Saline	Saline Concentrate

Bacteriostatic Additive and Saline Concentrate—The bacteriostatic additive and saline concentrate need to be mixed with water.

Saline—Saline solution comes ready to use.

Cannot Be Sold Outside United States—Eye wash solutions cannot be sold outside the United States due to product registration requirements.

Container Size	Cannot Be Sold To		Each



Bacteriostatic Additive	8 fl. oz.	—	54285T29	000000


Saline	1 gal.	Outside United States	5388T59	00000
Saline Concentrate	1.4 gal.	Outside United States	5388T47	00000

Antislip Floor Coating Additives

Consisting of small, spherical particles, add these to water- or solvent-based floor coatings to create a slip-resistant surface that’s easier to clean than sand-textured surfaces. Additives won’t change the coating’s color.

3.2 fl. oz. Container—Use 3.2 fl. oz. bottle with one gallon of floor coating.

16 fl. oz. Container—Use 16 fl. oz. bottle with five gallons of floor coating.

For Topcoat Composition	Container Size, fl. oz.	For Container Size, gal.		Each
Solvent Based, Water Based	3.2	1	2562N21	00000
Solvent Based, Water Based	16	5	2562N22	00000

Wear-Resistant Floor Coating Additives

Increase the wear resistance of thin floor coatings. These additives consist of an aluminum-oxide blend that improves abrasion resistance by up to 40%. They create a fine texture that increases a coating’s slip resistance and decreases its gloss, hiding minor imperfections on the floor. Additives won’t change the coating’s color.

For Topcoat Composition	Container Net Wt., lb.	For Container Size, gal.		Each
Solvent Based, Water Based	1/2	1	2562N6	000000

Flame-Retardant Paint Additives

Mix these additives with any water-based paint to create a flame-retardant surface. Use them on wood for a Class B rating. For interior use only.

One 16-fluid ounce bottle treats one gallon of latex, acrylic, or any other water-based paint.

	Container
For Topcoat Composition	Size, fl. oz.	Type	For Container Size, gal.		Each
Water Based	16	Bottle	1	2562N5	000000

Pigments

Add color to your mixture when making ceramic, plastic, and rubber or when casting metal. These pigments are not for use in paint.

		Container
Color	Material	Net Wt., lb.	Type	Material	Form	Particle Size, μm	CAS No.		Each



	Black	Iron Oxide	1	Bottle	Plastic	Powder	3	1317-61-9	1347N35	000000


	Brown	Iron Oxide	1	Bottle	Plastic	Powder	3	12713-03-0	1347N36	00000
	Cobalt Blue	Cobalt Oxide	1	Bottle	Plastic	Powder	37	1308-06-1	1347N38	000000
	Green	Chromium Trioxide	1	Can	Plastic	Powder	3	1308-38-9	1347N34	00000
	White	Zinc Oxide	1	Bottle	Plastic	Powder	3	1314-13-2	1347N37	00000
	Yellow	Iron Oxide	1	Bottle	Plastic	Powder	3	51274-00-1	1347N33	00000

Anodizing Dyes

Use these dyes after anodizing and before sealing to add a decorative appearance. One bottle makes two gallons of dye.

Multicolor Assortments—Multicolor assortment includes one bottle of each of the colors listed.

	Application Temp. Range, ° F	For Use On	Color		Each
Individual Colors



	4	60 to 75	Aluminum	Black	2632N9	000000


	4	60 to 75	Aluminum	Blue	2632N7	00000
	4	60 to 75	Aluminum	Green	2632N6	00000
	4	60 to 75	Aluminum	Orange	2632N3	00000
	4	60 to 75	Aluminum	Purple	2632N8	00000
	4	60 to 75	Aluminum	Red	2632N4	00000
	4	60 to 75	Aluminum	Yellow	2632N5	00000


	Multicolor Assortments



			4	60 to 75	Aluminum	Blue, Green, Orange, Purple, Red, Yellow	2632N2	000000

Diesel Exhaust Fluids


Box	Drum

For use in selective catalytic reduction (SCR) systems, these fluids reduce the air pollution from your diesel engine to help you comply with EPA guidelines. Commonly known as DEFs, they contain urea to convert nitrous oxide (NOx) into water vapor and nitrogen for cleaner emissions. They meet ISO 22241-1 and American Petroleum Institute standards for diesel exhaust fluids.

	Container
	Size, gal.	Type	Temp. Range	Color	For Engine Type	Primary Chemical	Specs. Met	Certification		Each
Water Based



		2.5	Box	20° F to 210° F	Clear	Diesel	Urea	ISO 22241-1	API Certified Diesel Exhaust Fluid	9110N112	000000


		55	Drum	20° F to 210° F	Clear	Diesel	Urea	ISO 22241-1	API Certified Diesel Exhaust Fluid	9110N113	000000

Oil Stabilizers

These stabilizers contains nano-sized additives, which penetrate small surface imperfections to reduce wear and heat, extending the life of both the oil and the engine while improving performance.

	Container						Each		Package
	Size, fl. oz.	Type	Temp. Range	Color	With Detergent	For Engine Type		Each	Pkg. Qty.		Pkg.
Mineral Oil Base



		32	Bottle	20° F to 260° F	Black	No	Gasoline, Diesel	2080N11	000000	12	2080N12	0000000

Gas Stabilizers

Image of Product. Front orientation. Oil Additives.

Add these stabilizers to your gas tank to keep fuel fresh when stored for long periods. One fluid ounce of stabilizer treats 2.5 gallons of gasoline; each bottle treats up to 80 gallons.

	Container						Each		Package
	Size, fl. oz.	Type	Temp. Range	Color	With Detergent	For Engine Type		Each	Pkg. Qty.		Pkg.
Synthetic Oil Base



		32	Bottle	Not Rated	Red	No	Gasoline	10385K47	000000	4	10385K471	000000

Epoxy Thinners

Dilute thick epoxies so they're thin enough to spray. These thinners evaporate quickly enough that sprayed coatings won't sag, but slowly enough that they still bond well.

Cannot Be Sold To—They cannot be sold to the areas listed due to VOC (Volatile Organic Compounds) regulations.

Container Size, gal.	Solution Type	For Topcoat Composition	Cannot Be Sold To		Each
1	Solvent Based	Solvent Based	California, Colorado, Connecticut, Delaware, Maryland, Michigan, New Hampshire, New York, Ohio, Rhode Island, Utah, Canada	7741T73	000000

Low-Odor Paint Thinners

These paint thinners are acetone and naphtha based, so they're low odor. They're often used for cleanup and to thin paint for spray applications.

Cannot Be Sold Outside United States—They cannot be sold outside the United States due to product labeling requirements.

Container Size, gal.	Solution Type	For Topcoat Composition	Cannot Be Sold To		Each
1	Solvent Based	Solvent Based	Outside United States	7741T71	000000

Supplemental Eye Wash Solutions

Keep eye wash solution handy when you're on the go. Use these in addition to an ANSI-compliant station for areas that need immediate access to eye wash. They cannot be sold outside the United States due to product registration requirements.

				Case
	Capacity (Number of Bottles Included)	Contents	Material	Ht.	Wd.	Dp.	Material	Includes	Cannot Be Sold To		Each
Eye Coverage



		1 fl. oz. (6), 4 fl. oz. (6)	Saline	Polyethylene	9"	13"	4"	Vinyl Plastic	Carrying Case, Shoulder Strap	Outside United States	55255T11	000000

Replacement Eye Wash Solutions

Container Size, fl. oz.	Contents		Each
1	Saline	55255T12	00000
4	Saline	55255T13	0000

Toluene/Xylene Paint Thinner Substitutes

These paint thinners are often used for cleanup and to thin paint for spray applications.

Cannot Be Sold Outside United States—They cannot be sold outside the United States due to product labeling requirements.

Container Size, gal.	Solution Type	For Topcoat Composition	Cannot Be Sold To		Each
1	Solvent Based	Solvent Based	Outside United States	7741T72	000000

Long-Life Dry-Film Lubricants

Nano-sized additives fill small surface imperfections, reducing wear and heat to extend the life of both the lubricant and equipment. These lubricants dry to form a nonstick film that won’t attract dust. They are often used on hinges, gears, and roller chain.

Cannot Be Sold To—Lubricants cannot be sold to the listed areas due to product labeling requirements.

	Container					Each		Package
	Net Wt., oz.	Type	Additive	Temp., ° F	Cannot Be Sold To		Each	Pkg. Qty.		Pkg.
Lubricants



		11	Aerosol Can	Ceramic, PTFE	-30 to 570	Canada	2170N11	000000	6	2170N12	000000

Automatic Transmission Fluids


Bottle	Jug	Pail

These fluids meet Ford and General Motors (Dexron III) specifications for automatic transmission fluids. They can also be used as power steering fluid and compressor fluid.

Viscosity is the thickness of an oil. The higher the grade, the thicker the oil, and the less it flows.

Mineral Oil Base—Mineral-oil-based fluids are derived from petroleum and are more economical than synthetic-oil-based fluids.

Synthetic Oil Base—Synthetic-oil-based fluids last longer than mineral-oil-based fluids, reducing the frequency of changes, and withstands a wider range of temperatures. Compatible with mineral-oil-based fluids, you can add these fluids without draining your existing fluids first.

	Viscosity Grade				Container						Each		Package
	ISO	AGMA	SAE	SSU	Size	Type	Temp. Range	Color	With Detergent	Specs. Met		Each	Pkg. Qty.		Pkg.
Mineral Oil Base



		32	—	10W	150 SSU @ 100° F	32 fl. oz.	Bottle	-30° F to 200° F	Red	No	Dexron-III(H)	2183K11	000000	12	2183K111	0000000


		Synthetic Oil Base



				46	1	20	220 SSU @ 100° F	1 gal.	Jug	-35° F to 200° F	Red	No	Dexron-III(H)	2183K21	00000	6	2183K211	000000


				46	1	20	220 SSU @ 100° F	5 gal.	Pail	-35° F to 200° F	Red	No	Dexron-III(H)	2183K31	000000	—	———	0

Engine Treatments


Marvel Mystery Oil	Sea Foam Motor Treatment, Bottle	Sea Foam Motor Treatment, Can	Slick 50 Engine Treatment

Mix these treatments with gasoline or oil to improve engine performance.

Marvel Mystery Oil—Add Marvel Mystery Oil to gasoline and oil. In gas it cleans fuel injectors, prevents sticky valves, and limits buildup. In oil it eases start-up in cold temperatures, extends oil life, and prevents the formation of acid and sludge. It can also be used with marine and diesel engines.

Sea Foam Motor Treatment—Use Sea Foam Motor Treatment in gasoline and diesel engines, and in both conventional and synthetic oil. When added to gas and diesel fuel, it cleans fuel injectors, carburetor passageways, intake valves, and intake chambers. It also lubricates upper engine cylinders. This treatment can even stabilize gas and diesel fuel to store them for up to two years. When added to oil, this treatment removes harmful residue and deposits.

Slick 50 Engine Treatment—Add Slick 50 Engine Treatment to oil to protect your engine from friction and heat. Do not use with vehicles used in heavy duty industrial or commercial applications.

		Container						Each		Package
	SAE Viscosity Grade	Size	Type	Temp. Range	Color	With Detergent	For Engine Type		Each	Pkg. Qty.		Pkg.
Marvel Mystery Oil



		—	16 fl. oz.	Bottle	Not Rated	Red	Yes	Gasoline, Diesel	1272K5	00000	6	1272K501	000000


		—	32 fl. oz.	Bottle	Not Rated	Red	Yes	Gasoline, Diesel	1272K1	00000	6	1272K101	00000
		—	1 gal.	Jug	Not Rated	Red	Yes	Gasoline, Diesel	1272K2	00000	4	1272K202	000000


		Sea Foam Motor Treatment



				—	16 fl. oz.	Bottle	Not Rated	Clear	No	Gasoline, Diesel	3929N11	00000	24	3929N12	000000


				—	1 gal.	Can	Not Rated	Clear	No	Gasoline, Diesel	3929N13	00000	—	———	0


				Slick 50 Engine Treatment Synthetic Oil Base



						5W-30	15 fl. oz.	Bottle	Not Rated	Amber	Yes	Gasoline	2206K23	00000	6	2206K231	000000

Odorless Paint Thinners

Avoid the fumes and strong smell of traditional paint thinners with these odorless paint thinners. They're often used for cleanup and to thin paint for spray applications.

Cannot Be Sold To—They cannot be sold to the areas listed due to product labeling requirements and/or local regulatory limits on VOCs (volatile organic compounds).

Container Size, gal.	Solution Type	For Topcoat Composition	Cannot Be Sold To		Each
1	Solvent Based	Solvent Based	California, Colorado, Connecticut, Delaware, Maryland, Michigan, New Hampshire, New York, Ohio, Rhode Island, Utah, Outside United States	7741T21	000000

Turpentine Paint Thinners

These paint thinners are often used for cleanup and to thin paint for spray applications.

Cannot Be Sold To—They cannot be sold to the states listed due to local regulatory limits on VOC (volatile organic compounds), or outside the United States due to product labeling requirements.

Container Size, qt.	Solution Type	For Topcoat Composition	Cannot Be Sold To		Each
1	Solvent Based	Solvent Based	California, Colorado, Connecticut, Delaware, Maryland, Michigan, New Hampshire, New York, Ohio, Rhode Island, Utah, Outside United States	7760T2	000000

Hydraulic System Treatments

Protect and clean hydraulic, automatic transmission, and power steering systems—these treatments clear out sticky varnish and prolong system life. They help manage moisture levels in hydraulic systems, and dissolve harmful deposits to improve performance in automatic transmission systems. In power steering systems, they reduce noise from the steering pump, promote smoother steering, and control moisture levels. They’re also used to flush out systems before replacing power steering fluid.

These treatments are compatible with all petroleum-based hydraulic oil and power steering fluids. They work with all conventional and synthetic, petroleum- and mineral-based automatic transmission fluids.

	Container					Each		Package
	Size, fl. oz.	Type	Color	With Detergent	For Engine Type		Each	Pkg. Qty.		Pkg.
Sea Foam Trans Tune—Mineral Oil Base



		16	Bottle	Red	No	Gasoline, Diesel	3937N11	000000	12	3937N111	0000000

Long-Life Penetrating Lubricants

Nano-sized additives fill small surface imperfections, reducing wear and heat to extend the life of both the lubricant and equipment. Cut through dirt, grease, and rust, loosen stuck fasteners, and protect tools and equipment with these thin, multipurpose lubricants. They go on as a foam to cling to parts and resist dripping.

Cannot Be Sold To—Lubricants cannot be sold to the listed areas due to product labeling requirements.

Container			Temp.			Each		Package
Net Wt., oz.	Type	Additive	Min.	Max., ° F	Cannot Be Sold To		Each	Pkg. Qty.		Pkg.
11	Aerosol Can	Ceramic-Reinforced PTFE	Not Rated	120	Canada	2193N11	000000	6	2193N12	000000

Thinners for Water-Based Paint and Coatings

These thinners are often used for cleanup and to thin paint for spray applications.

Cannot Be Sold Outside United States—They cannot be sold outside the United States due to product labeling requirements.

Container Size	Solution Type	For Topcoat Composition	Cannot Be Sold To		Each
1 qt.	Water Based	Water Based	Outside United States	7741T51	00000
1 gal.	Water Based	Water Based	Outside United States	7741T61	00000

Smooth-Finish Paint Additives


Water Based	Solvent Based

These additives slow down paint’s cure time, allowing it to flow better and fill in brushstrokes for a smooth finish. They also improve adhesion.

Water Based—Use water-based additives with water-based paint, such as latex and acrylic paint. One quart treats up to four gallons of paint.

Solvent Based—Use solvent-based additives with oil- and solvent-based paint. One quart treats up to two gallons of paint. They cannot be sold to the listed areas due to VOC (volatile organic compounds) regulations.

	Container
For Topcoat Composition	Size	Type	For Container Size, gal.	Cannot Be Sold To		Each
Water Based	1 qt.	Bottle	4	—	2562N3	000000
Solvent Based	1 qt.	Can	2	California, Colorado, Connecticut, Delaware, Maryland, Michigan, New Hampshire, New York, Ohio, Rhode Island, Utah, Canada	2562N1	00000
Solvent Based	1 gal.	Can	8	California, Colorado, Connecticut, Delaware, Maryland, Michigan, New Hampshire, New York, Ohio, Rhode Island, Utah, Canada	2562N2	000000

Colorants for Plastic Pellets


Black	Blue	Dark Gray

Gray	Light Blue	White

Yellow	Green	Dark Red

Orange	Red

Add color when making plastic parts. Also called masterbatches, these colorants contain a base plastic that works with a variety of plastic types—from general purpose polypropylene to tough ABS. This means you don’t need to stock up on colorants for each type. Mix them in with your pellets before melting. To get a rich color for most plastic, you need only 1-2% of colorant in your batch, since they’re concentrated.

	Max. Temp., ° F	Container Net Wt., lb.		Each
For ABS, Acetal, Nylon, Polybutylene, Polycarbonate, Polyethylene, Polypropylene, Polystyrene, PVC



	Black	570	5	5174N32	0000000


	Blue	570	5	5174N38	000000
	Dark Gray	570	5	5174N39	000000
	Gray	570	5	5174N41	000000
	Light Blue	570	5	5174N31	000000
	White	570	5	5174N33	000000
	Yellow	570	5	5174N34	000000


	For ABS, Acetal, Polybutylene, Polycarbonate, Polyethylene, Polypropylene, Polystyrene, PVC



			Green	570	5	5174N37	000000


			For ABS, Acetal, Polybutylene, Polyethylene, Polypropylene, Polystyrene, PVC



					Dark Red	570	5	5174N35	000000


					For ABS, Nylon, Polybutylene, Polystyrene, PVC



							Orange	570	5	5174N42	000000


							For Polyethylene, Polypropylene, Polystyrene, PVC



									Red	570	5	5174N36	000000