Published: October 22, 2026 | Last updated: October 22, 2026
TL;DR
- Sil-Glyde is a silicone-based brake lubricant from AGS that is safe on rubber and plastic, including EPDM and nitrile rubber (Lordco, 2026).
- AGS rates it heat resistant to over 425°F (218°C), and moisture-proof, so it does not burn off like some anti-squeal products (Lordco, 2026).
- Its most popular use is on caliper slide pins, where the wrong grease can swell the rubber boots and make the pins stick.
- Owners rate the 4 oz tube 4.7 out of 5 from more than 1,100 reviews (Desertcart, 2026).
- Use it on slide pins, pad contact points and drum brake contact points, but never on pads, rotors or any friction surface.
Disclosure: As an Amazon Associate, Brakes Hub earns from qualifying purchases. This never changes our verdicts.
How we reviewed this product: we studied AGS product information, retailer specifications and a large sample of owner feedback, and compared Sil-Glyde with other brake lubricant types. We did not run our own lab tests.
What Is Sil-Glyde Brake Lubricant?
Sil-Glyde is a silicone-based grease made by AGS for use on the whole brake assembly. It lubricates moving parts, dampens vibration and protects against rust (Lordco, 2026).
It comes in several sizes, including a 4 oz tube, an 8 oz tube and a 12 oz tub (Desertcart, 2026). The clear grease is easy to see on parts and easy to wipe off where you do not want it.
Many mechanics keep Sil-Glyde for one job above all: lubricating caliper slide pins without damaging the rubber boots that cover them.
Why Slide Pin Grease Must Be Safe on Rubber
Caliper slide pins sit inside rubber boots, and many petroleum-based greases make that rubber swell. Swollen boots squeeze the pins, the caliper stops sliding, and the pads drag and wear unevenly.
A floating caliper must slide freely on its pins so both pads press evenly on the rotor. If one pin sticks, one pad does most of the work and wears out first.
Silicone grease does not attack the EPDM and nitrile rubber used in most brake boots, which is why AGS lists Sil-Glyde as compatible with both (Lordco, 2026). Owners report the same result: boots stay soft and pins keep sliding (Desertcart, 2026).
Sil-Glyde Specifications at a Glance
Sil-Glyde is a clear silicone grease rated for high brake temperatures and safe on rubber and plastic. The table lists the published details.
| Specification | Sil-Glyde |
|---|---|
| Base | Silicone |
| Heat resistance | Over 425°F (218°C) |
| Listed temperature range (4 oz tube) | -20°F to 400°F |
| Rubber compatibility | EPDM and nitrile |
| Plastic safe | Yes |
| Moisture resistance | Moisture-proof |
| Sizes | 4 oz tube, 8 oz tube, 12 oz tub |
Sources: Lordco (2026); Desertcart (2026). Retail listings show both 400°F and 425°F figures, so treat about 400°F as the safe working limit.
Where to Use Sil-Glyde on a Brake Job
Use Sil-Glyde on parts that slide or touch metal-to-metal, never on the parts that create friction. The list below shows the right places.
- Apply a thin coat to caliper slide pins before sliding them back into their rubber boots.
- Apply a light film where the pad ears sit in the caliper bracket clips.
- Apply a small amount to the back of the pads where they touch the caliper piston or fingers, unless the pads have shims that say not to.
- Apply it to drum brake contact points on the backing plate where the shoes rub.
- Use it on parking brake cables and adjuster threads to stop corrosion.
Never put any grease on the pad friction material or the rotor faces. If grease reaches them, clean the rotor with brake cleaner and replace contaminated pads.
How to Apply Sil-Glyde Step by Step
Apply Sil-Glyde to clean parts in thin coats, because more grease attracts more dust. Follow these steps.
- Remove the caliper and slide pins. Wipe off old grease with a clean rag.
- Clean rust from the bracket with a wire brush such as the Lisle 13410 caliper brush.
- Clean the area with brake cleaner, for example CRC Brakleen, and let it dry fully.
- Coat each slide pin with a thin, even layer of Sil-Glyde and push it back into its boot. It should slide in and out smoothly.
- Apply a thin film to the clip contact points and fit the pads.
- Wipe away any excess so it cannot reach the rotor.
Sil-Glyde vs Other Brake Lubricants
Sil-Glyde is the best general choice where rubber is involved, while ceramic or synthetic brake pastes suit very hot metal-to-metal contact points.
| Lubricant type | Safe on rubber? | Best use |
|---|---|---|
| Silicone (Sil-Glyde) | Yes | Slide pins, boots and general brake hardware |
| Ceramic brake paste | Check the label | Hot metal-to-metal pad contact points |
| Copper anti-seize | No, keep off rubber | Hub faces and some bolts |
| General petroleum grease | No, can swell rubber | Not recommended for brakes |
Our brake grease guide covers each type in more detail.
Pros and Cons of Sil-Glyde
Sil-Glyde's main strength is that it is safe on rubber boots and still handles brake heat, and its main limit is a lower temperature rating than some ceramic pastes.
Pros
- It is safe on EPDM and nitrile rubber, so boots do not swell.
- It resists heat to over 425°F, according to AGS.
- It is moisture-proof and helps prevent rust.
- A single tube lasts for many brake jobs.
Cons
- Its heat rating is lower than some ceramic brake pastes.
- It will not free pins that are already seized; those need replacing.
- Retail listings show slightly different temperature figures.
Common Problems With Brake Lubrication and How to Fix Them
Most brake lubrication problems come from using the wrong grease, using too much or putting it in the wrong place.
| Problem | Likely cause | Solution |
|---|---|---|
| Caliper sticks after a pad change | Petroleum grease swelled the boots | Clean pins and boots, replace swollen boots and use silicone grease |
| Squeal returns quickly | Too little grease at contact points | Clean and reapply a thin film |
| Grease on the rotor | Too much grease applied | Clean the rotor and replace contaminated pads |
| Pin will not slide even with grease | Pin is corroded or bent | Replace the pin and boot |
Frequently Asked Questions About Sil-Glyde
Is Sil-Glyde safe for caliper slide pins?
Yes. Sil-Glyde is silicone-based and compatible with EPDM and nitrile rubber (Lordco, 2026), which makes it a common choice for slide pins and their boots.
What temperature can Sil-Glyde handle?
AGS rates Sil-Glyde heat resistant to over 425°F (218°C) (Lordco, 2026). Some listings show a 400°F upper limit, so treat that as the safe working figure.
Can I use Sil-Glyde on the back of brake pads?
Yes, on the metal backing where the pad touches the piston or caliper, unless your pad maker says otherwise. Never apply it to the friction material.
Does Sil-Glyde stop brake squeal?
AGS says Sil-Glyde dampens vibration between contact points and stops squeal from non-asbestos and semi-metallic pads (Walmart, 2026). Worn hardware or glazed rotors can still cause squeal.
Can I use Sil-Glyde on rubber seals outside the brakes?
Yes. Owners use it on many rubber and plastic parts because it keeps rubber pliable and does not attack it (Desertcart, 2026).
How much Sil-Glyde should I use?
Use a thin, even film. Too much grease attracts dust and can spread to the rotor.
Summary: Is Sil-Glyde Worth Buying?
- Sil-Glyde is a silicone brake lubricant that is safe on rubber boots and plastic.
- It resists heat to over 425°F, according to AGS, and protects against moisture and rust.
- It is the right grease for slide pins and a good general choice for brake hardware.
- Keep it off pads and rotors, and use thin coats only.
Safety note: brakes are safety parts. If you are not sure how to do the job, have a qualified mechanic do it.