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Electrical Insulating Varnish


Protect motor winding wire, transformers, and other metal electrical parts from oils, chemicals, and moisture with these abrasion- and wear-resistant coatings. They are solvent based, so they dry quickly. Choose a varnish with a dielectric strength that’s greater than the voltage of the electrical equipment it protects.
Varnish in a bottle includes an application brush. The brush is also good for touchups.
Clear varnish leaves a transparent film so components can be inspected. Red and green varnish stand out for identification when used to coat wire.
Varnish that cannot be sold to the listed areas are restricted by product labeling requirements.
Container | Each | ||||||||||
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Color | Dielectric Strength | Net Weight, oz. | Size, fl. oz. | Harshness | For Use On | Temp. Range, °F | Specifications Met | Cannot Be Sold To | 1-11 | 12-Up | |
Aerosol Can—Flammable (Solvent Based) | |||||||||||
Clear | 2,300 V/mil | 15 1/4 | __ | Harsh | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | 0° to 310° | ASTM D115 | __ | 0000000 | 000000 | 00000 |
Clear | 3,000 V/mil | 12 | __ | Moderate | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | -20° to 355° | __ | Canada | 00000000 | 00000 | 00000 |
Red | 2,600 V/mil | 15 1/4 | __ | Harsh | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | 0° to 310° | ASTM D115 | __ | 0000000 | 00000 | 00000 |
Green | 2,890 V/mil | 15 1/4 | __ | Harsh | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | 0° to 310° | ASTM D115 | __ | 0000000 | 00000 | 00000 |
Bottle—Flammable (Solvent Based) | |||||||||||
Clear | 3,000 V/mil | __ | 1.8 | Moderate | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | -20° to 355° | __ | Canada | 00000000 | 00000 | 00000 |
Red | 3,700 V/mil | __ | 1.8 | Moderate | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | -40° to 355° | __ | Canada | 00000000 | 00000 | 00000 |
Heavy Duty EMI/RFI Shielding Coatings for Electronics

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 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. These coatings cannot be sold to Canada due to product labeling requirements.
Dry Time | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Interference Reduction @ Frequency | Surface Resistivity | Temperature Range, °F | Heating Requirements to Reach Full Strength | For Use On | Color | Cannot Be Sold To | Each | |
27 | Thin Liquid | 5 | 4 | 55 dB @ 1 GHz | 0.31 ohms/sq. | -40° to 245° | 4 hrs. @ 150° F | Aluminum, Steel, Stainless Steel, Ceramic, Glass, Plastic, Chrome, Galvanized Steel | Brown | Canada | 0000000 | 0000000 |