Made in the USA
Since 1931
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Sil-Glyde®
How to use — 3 easy steps
1
Clean
Make sure terminals, boots and connectors are clean and dry.
2
Brush
Brush a thin film onto the connection or inside the boot.
3
Connect
Reconnect — the film seals out moisture and prevents corrosion.
Compare the line
Which AGS dielectric grease is right for you?
| AGS Dielectric Grease - Brush TopThis product | Sil-Glyde Boot Protector, Tube, 1.25 oz,Card | |
|---|---|---|
| Best for | Sealing connections with a mess-free brush | Sealing & protecting electrical connections |
| Where to use | Battery posts, boots, trailer/marine connectors, sockets | Spark-plug boots, connectors, terminals, distributor caps |
| Format | Brush-top can — 4 & 8 oz | Grease — 1.25 oz tube |
| Price | $8.99 | $5.06 |
The details
Description
Defend every electrical connection against moisture, corrosion, and heat with AGS Dielectric Grease. This non-melting silicone compound brushes on easily, forming a water-tight, vibration-proof film that extends battery life and stops shorts before they start.
The built-in brush delivers precise, mess-free coverage on terminals, boots, and connectors — and the silicone base won’t swell EPDM, PVC, or most elastomers, so it’s safe on rubber and plastic as well as metal, ceramic, and glass contacts.
At a glance
Specifications
| Size | 4 oz & 8 oz brush-top can |
| Base | Silicone dielectric compound |
| Temp range | -40°F to 400°F (-40°C to 204°C) |
| Color | Translucent |
| Applicator | Built-in brush |
| Safe on | Rubber, plastic, metal, ceramic, glass |
📄 Dielectric Spark Plug Grease - Safety Data Sheet
For professional installers & shops — full technical documentation.
Good to know
Frequently asked questions
What is dielectric grease used for?
Sealing and protecting electrical connections — spark-plug boots, battery posts, trailer and marine connectors, bulb sockets and weather-pack terminals — from moisture and corrosion.
Why the brush top?
The built-in brush delivers precise, mess-free coverage on terminals, boots and connectors without a separate applicator.
Is it safe on rubber and plastic?
Yes — the silicone base won't swell EPDM, PVC or most elastomers, and it's compatible with metal, ceramic and glass contacts.
Does it block the electrical signal?
No. Applied to the connection, it seals out moisture and reduces arcing while the metal contacts still mate under load.