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Small white tube of dielectric silicone grease paste

Realth Dielectric Silicone Grease 1 oz

SKU CH-5FP8-9WEEH

Waterproof silicone paste protects electrical connections from corrosion and arcing between -40°F and 428°F

  • Key featuresPrevent Corrosion, Electrical
  • Product weight0.05 kg
  • Product typePrevent Corrosion, Silicone, Paste
  • Insulates connections to prevent arcing and voltage leaks
  • Blocks moisture and contaminants for long-term electrical reliability
  • Stops corrosion on battery terminals and metal contacts
  • Withstands -40°F to 428°F for automotive and marine use
  • Safe on rubber, plastic and ceramic without affecting conductivity

Dielectric Silicone Grease 1 oz

This one-ounce tube of non-conductive silicone grease insulates electrical connections in automotive, marine and outdoor equipment. Mechanics, boat owners and DIY technicians use it to seal out moisture and contaminants from spark-plug boots, battery terminals and wiring harnesses. The paste consistency stays in place on vertical surfaces without migrating.

Sustained dielectric protection

The grease maintains its insulating barrier continuously from -40°F to 428°F, resisting water, salt and thermal cycling without hardening or washing away. It prevents arcing, voltage leaks and galvanic corrosion on metal contacts for the life of the connection. The 0.05 kg net weight supplies enough material for multiple service intervals.

Simple application with common pitfalls

Squeeze a thin film directly onto clean terminals or boot interiors; a small dab per connection is sufficient. Over-filling can trap air pockets that reduce the dielectric seal, while skipping the cleaning step lets existing corrosion continue underneath. The formula is safe for rubber, plastic and ceramic parts, so no masking is required.

How it compares

Measured against everything we stock in Greases, Lubricants & Dispensers, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 87% of the 122 comparable items (median $14.99).

Specifications

Product
Brand nameRealth
Product typePrevent Corrosion, Silicone, Paste
Size & build
Product weight0.05 kg

Questions about this item

Does the grease stay stable when the engine bay hits 428°F all day?

Yes, the silicone formula is rated from -40°F to 428°F and remains waterproof and salt-resistant across that range.

What connectors or tools do I need before I can apply this grease?

No special tools are required; the 1 oz tube dispenses directly onto spark plug boots, battery terminals or marine wiring.

Will this grease damage the rubber boots on my older ignition wires?

The non-toxic, non-conductive silicone is fully compatible with rubber seals, plastic housings and ceramic insulators.

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