NSF Electrical Grease for Automotive Connectors and Spark Plug Boots

FMNB dielectric grease is a high-performance silicone electrical lubricant designed to insulate, seal, and protect critical connectors in car, automotive, marine, and household systems. It blocks moisture, prevents corrosion, and maintains reliable spark, battery, and ignition performance in demanding environments, helping extend the life of every connector, terminal, and plug it touches. This contact grease helps preserve boots, seals, and housings while supporting consistent electric performance in daily driving and harsh conditions.Formulated as a stable dielectric grease, this contact lubricant spreads smoothly, stays in place, and will not wash out, making it ideal for spark plug boots, ignition coil connectors, battery terminals, and electric connectors exposed to water, salt, and dirt. Safe on rubber, plastic, ceramic, and most polymers, it helps prevent arcing, seizing, and wear, while preserving flexible boots and seals around each electrical connection. The silicone base resists drying, cracking, and thinning, so critical joints remain insulated even under vibration, road spray, and temperature swings.Use this versatile silicone grease anywhere you need long-term protection and smooth assembly on electrical parts, from car and truck engines to marine wiring, trailers, and outdoor power equipment. Apply a thin film inside each boot, around each terminal, and over exposed contact points to keep moisture out, maintain clean connectors, and ensure dependable electric performance season after season, whether you are a DIY owner or a professional technician. It works as an effective assembly aid during repairs and as preventive maintenance on new parts, helping reduce future troubleshooting and intermittent faults.Ideal for ignition systems, lighting circuits, battery connections, and low-voltage terminals, FMNB dielectric grease supports reliable function across a wide range of vehicles and equipment. Keep a tube in the garage, shop, or service truck so you can seal, lubricate, and protect plugs, boots, and connectors whenever you service electrical components.

• DIELECTRIC PROTECTION: FMNB dielectric grease forms a non-conductive barrier to insulate and protect electrical connection areas. Seals out moisture and protects against corrosion during routine automotive and marine maintenance.
• PTFE-ENHANCED FORMULA: NSF-certified dielectric grease with PTFE provides smooth lubrication for compatible connector seals and ignition boots. Spreads evenly for controlled application and reduces sticking during installation and removal.
• WIDE TEMPERATURE RANGE: Performs across temperatures from -40°F to 428°F (-40°C to 220°C), providing lubrication and electrical insulation in both cold weather and hot operating conditions.
• SPARK PLUG & BATTERY CARE: Lubricates compatible spark plug boots and ignition coil boots for easier servicing. Protects the exterior of assembled battery terminal connections against moisture and corrosion.
• AUTOMOTIVE & MARINE USE: Suitable for compatible electrical connector seals, trailer plugs, boat wiring connections and automotive lighting connectors. Apply a thin, even coating to boot interiors, seals and exposed protective surfaces for targeted coverage.