Conductive greases fill the gap between bare metal contacts, reducing resistance, blocking oxidation, and maintaining reliable current flow over time. Applications range from automotive battery terminals and switch contacts to PCB edge connectors and audio equipment. The right formula depends on the current load, temperature environment, and contact material. Here are five top-rated options for 2026.
| Product | Best For | Rating |
|---|---|---|
| MG Chemicals 846 Silver | General electronics | 4.8/5 |
| Permatex 22058 CRC | Automotive use | 4.6/5 |
| Super Lube 21030 | High-temp applications | 4.7/5 |
| Chemtronics CW7100 | PCB and switch contacts | 4.7/5 |
| Sanchem NO-OX-ID A-Special | Battery terminals | 4.5/5 |
MG Chemicals 846 Silver Conductive Grease — Best Overall
MG Chemicals’ 846 uses real silver particles suspended in a synthetic grease carrier, giving it one of the best conductivity ratings among consumer-accessible options. It handles temperatures from -40C to 200C, making it suitable for both automotive and electronics applications. The silver content prevents oxidation at contact points over long service periods. Apply in thin layers to connectors, switch contacts, and slide potentiometers. It does not dry out or harden under normal conditions.
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Permatex 22058 Electrical Contact Grease — Best for Automotive
Permatex built this formula specifically for automotive electrical system maintenance. It improves conductivity at battery terminals, spark plug boots, and high-amperage connectors, while repelling moisture and salt that cause corrosion. Temperature range covers typical underhood and outdoor conditions. Atcurrent pricing it is the most accessible option for automotive enthusiasts and mechanics. Tube design allows precise application in tight engine bay spaces.
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Super Lube 21030 Silicone Grease — Best for High-Temperature Use
Super Lube 21030 is a silicone-based conductive grease rated for continuous use up to 204C, which makes it the standout choice for applications near heat sources: motor commutators, industrial switch gear, and high-wattage electronics cooling assemblies. Conductivity is moderate rather than exceptional, so it suits general maintenance roles rather than precision low-resistance applications. The silicone base provides superior oxidation and moisture resistance over mineral oil alternatives.
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Chemtronics CW7100 — Best for PCB and Switch Contacts
Chemtronics CW7100 is a carbon-loaded conductive grease designed for sliding and rotating contacts, including slider switches, rotary encoders, and PCB edge connectors. The carbon particle size is fine enough to maintain contact through thin application layers without bridging adjacent pads. It is widely used in electronics repair and maintenance. Comes in a small tube suited for precision application. A go-to for audio equipment restoration and vintage electronics work.
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Sanchem NO-OX-ID A-Special — Best for Battery Terminals
NO-OX-ID A-Special is a corrosion preventative conductive grease designed for high-amperage applications including battery terminals, bus bars, and ground straps. The formula reduces the oxidation rate at copper and aluminum contact surfaces, which is a primary cause of terminal resistance in automotive and solar installations. It is not optimized for PCB-scale applications but excels in power distribution maintenance. A practical choice for solar system builders, EV owners, and automotive mechanics.
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How to Choose a Conductive Grease
Match the formula to the application. Silver-based greases offer the best conductivity and suit precision electronics. Carbon-loaded options work for sliding contacts where a liquid-like film is needed. Automotive and power applications call for formulas rated for higher amperage and oxidation resistance rather than pure conductivity precision. Temperature range matters: check that the grease rating covers your worst-case operating environment. Apply thin, even coats; excessive grease can attract debris and potentially bridge contacts in fine-pitch applications.
For more electronics and tech picks, see our best compact amplifier guide and learn how we score products at our methodology page.
Frequently asked questions
What is conductive grease used for?+
Conductive grease is applied to electrical connectors, battery terminals, switch contacts, and PCB contact points to improve conductivity, prevent oxidation, and reduce contact resistance. It is also used on high-voltage components to prevent arcing and on automotive battery terminals to resist corrosion. The grease carries electrical current while physically protecting the contact surface.
Is dielectric grease the same as conductive grease?+
No. Dielectric grease is an electrical insulator used to seal and protect connections from moisture without conducting current. Conductive grease carries electrical current. Using dielectric grease where conductivity is required reduces or eliminates current flow. The two products have opposite electrical properties and should not be substituted for each other.