Yes. You can spray Cavity Coater on the back side of automotive fuse and relay panels to protect them from corrosion. Fuses and relays, especially under the hood, are prone to corroding over time, and Cavity Coater displaces moisture and seals the metal off from it. Turn off all electrical power to the panel before you spray.
How to Apply Cavity Coater to a Fuse or Relay Panel
- Turn off electrical power to the panel.
- Make sure the back of the panel is clean and dry.
- Shake the Cavity Coater Aerosol extremely well, and again often while you spray.
- On open surfaces, hold the can 8 to 12 inches away and apply one thin, even coat. Cover completely, but do not over-saturate. For tight or enclosed spots, attach the Cavity Wand, insert it, and spray as you pull it out.
- Wait 10 minutes for the coating to wick in, then wipe off any excess with a clean rag lightly dampened, not soaked, with mineral spirits.
- Keep power off and the area away from sparks and flame while the solvent vapor clears. In an enclosed space that can take several hours.
Why Fuses and Relays Corrode
Moisture that gets behind a fuse or relay panel attacks the metal terminals and connections. Cavity Coater displaces water on contact and leaves a film that seals the metal off from moisture, the same way it protects the inside of a rocker panel.
Other Places to Use Cavity Coater
Cavity Coater is used inside any enclosed metal cavity: rocker panels, boxed frames, inner door and fender panels, windshield cowls, trunk lids, hoods, A-posts, B-posts and tailgates. It also works as an anti-seize on nuts, bolts, shafts and pipe fittings. The Cavity Coater directions cover the full process.
Frequently Asked Questions: Cavity Coater on Fuse and Relay Panels
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