Conductive Paint | McMaster-Carr

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1× 10^3 ohm/sq. to 1× 10^5 ohm/sq.

1× 10^6 ohm/sq. to 1× 10^11 ohm/sq.

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Interference Reduction @ Frequency

7 Products

EMI/RFI Shielding Conformal Coatings

Protect sensitive electronic parts, enclosures, and prototypes from electromagnetic interference (EMI) and radio frequency interference (RFI) with these coatings. Also known as conductive paint, these coatings block EMI and RFI from disrupting electrical, data, and radio signals, which can cause circuit malfunctioning and data loss.

For best adhesion, apply to clean, oil-free surfaces. If applying to highly chemical-resistant plastics such as PVC and PTFE, use a primer first.

Carbon Acrylic Plastic—Carbon acrylic plastic coatings are made with ground carbon powder mixed with acrylic. They're best for RFI and low-frequency shielding applications, such as protecting jumpers and resistors in initial prototypes, since they're not as conductive as nickel and silver acrylic plastic coatings. They don’t contain metal, so they’re also great for electronics where metal-filled coatings could cause malfunction, such as metal detectors.

Nickel Acrylic Plastic—Nickel acrylic plastic coatings are made with nickel flakes mixed with acrylic. They’re the best in our offering for protecting magnetic components, since they absorb and redirect magnetic fields. While not as conductive as silver acrylic plastic coatings, they still protect against a broad spectrum of EMI and RFI frequencies. Use them to repair small circuits on circuit boards and to coat devices such as meter and scanner housings. They have good corrosion resistance.

Silver Acrylic Plastic—Silver acrylic plastic coatings are made with silver flakes mixed with acrylic. They’re the most conductive coatings in our offering, so they protect against the broadest spectrum of EMI and RFI frequencies. They’re also the most corrosion resistant. Use them to coat portable electronics, access panels, industrial cabinets, and engine control modules.

Cannot Be Sold To—Coatings that cannot be sold to the listed areas are restricted by product labeling requirements.

			Dry Time				Temperature, ° F
	Container Net Wt., oz.	Consistency	Touch, min.	Overall, hr.	Interference Reduction @ Freq.	Surface Resistivity, ohm/sq.	Min.	Max.	For Use On	For Use Outdoors	Color	Cannot Be Sold To		Each
Carbon Acrylic Plastic



		12	Thin Liquid	5	24	10 dB @ 1 GHz	100	-40	245	Plastic	Yes	Black	Canada	77075T111	000000


		Nickel Acrylic Plastic



				12	Thin Liquid	5	24	55 dB @ 1 GHz	0.49	-40	245	Plastic	Yes	Gray	Canada	77075T112	00000


				Silver Acrylic Plastic



						12	Thin Liquid	30	24	70 dB @ 1 GHz	0.10	Not Rated	185	Plastic	No	Silver	—	77075T39	000000

Static-Control Protective Coatings for Concrete Floors

Commonly used by electronics manufacturers and research labs, apply these coatings to floors and walls to protect equipment from static electricity buildup. Repair cracks and holes prior to application. Apply with a brush, roller, or sprayer.

		Dry Time, hr.
Container Size, gal.	Solution Type	Touch	Overall	Approx. Coverage @ Thk.	Max. Temp., ° F	Application Temp. Range, ° F	Performance	Surface Resistivity, ohm/sq.	For Use On	Choose a Color		Each
1	Water Based	4	24	200 ft² @ 15 mil	240	55 to 100	Conductive, Static Control	1× 10^3 to 1× 10^5	Steel, Ceramic, Masonry, Concrete, Wood	Satin Black	7823T4	0000000
1	Water Based	4	24	200 ft² @ 15 mil	240	55 to 100	Static Control, Static Dissipative	1× 10^6 to 1× 10^11	Steel, Ceramic, Masonry, Concrete, Wood	Satin Gray , Satin Red , Satin White , Satin Yellow	7823T2	000000

Heavy Duty EMI/RFI Shielding Conformal Coatings

Coat electronics for durability in tough conditions while blocking EMI/RFI signals. Made of epoxy mixed with silver-coated copper, these coatings are stronger than acrylic plastic EMI/RFI coatings. They are rigid enough to withstand the wear of access panels and industrial cabinets. You can also use them in engine compartments because they resist damage from high temperatures and chemicals. Also known as conductive paint, they shield your parts from interference that could cause circuit malfunction and data loss. Mix the two parts of these compounds together and paint them on components.

Cannot Be Sold to Canada— These coatings cannot be sold to Canada due to product labeling requirements.

			Dry Time
	Container Size, fl. oz.	Consistency	Touch, min.	Overall, hr.	Mixing Req.	Interference Reduction @ Freq.	Surface Resistivity, ohm/sq.	Dielectric Strength	Thermal Conductivity	Temp. Range, ° F	Heating Req. to Reach Full Strength	Cure Type	For Use Outdoors	For Use On	Color	Cannot Be Sold To		Each
Silver-Coated Copper Epoxy







				Can

				27	Thin Liquid	5	4	Yes	55 dB @ 1 GHz	0.31	Not Rated	Not Rated	-40 to 245	4 Hrs. @ 150°F	Heat	No	Aluminum, Steel, Stainless Steel, Plastic, Ceramic, Glass, Chrome, Galvanized Steel	Brown	Canada	6606N11	0000000

Static-Control Protective Coatings

Protect sensitive electronic equipment from sparks, shorts, and sudden discharges. These acrylic-based coatings contain low-conductivity pigments to dissipate electric charge and prevent static buildup on your equipment. Reliable enough for use on semiconductors, they’re often used to shield tools, conveyors, work surfaces, and enclosures. Once cured, these coatings are flexible and durable. They also won’t crack, chip, or peel.

Product labeling requirements restrict sales to the listed areas.

		Dry Time
	Container Net Wt., oz.	Touch, min.	Overall, hr.	Temp. Range, ° F	Performance	Surface Resistivity, ohm/sq.	For Use On	Color	Cannot Be Sold To		Each
Acrylic Plastic



		12	5	24	-40 to 245	Static Control, Static Dissipative	1.2 × 10^7	Plastic	Gray	Canada	6607N11	000000