If you want a specialized compound specifically engineered to silence brake squeaks and dampen vibrations on disc pads, choose CRC Disc Brake Quiet; if you need a high-temperature copper anti-seize lubricant for electrical connectors, spark plugs, and heavy-duty metal assembly across your vehicle's engine bay or undercarriage, choose Keze Dielectric Grease Automotive.
• CRC Disc Brake Quiet offers a water-resistant, high-temperature film designed strictly to absorb noise and stop the grinding of brake pads, but it is a single-use, small-volume solution limited to non-shimmed pad backs.
• Keze Dielectric Grease Automotive provides massive versatility with copper anti-seize properties that protect against rust, corrosion, and seizing from -30°F to 1800°F, yet it is not formulated as a dedicated friction modifier for quieting brakes.
• CRC is for the driver dealing exclusively with annoying brake squeals who needs a targeted fix for pad-to-caliper contact points.
• Keze is for the mechanic or DIY enthusiast needing a heavy-duty, multi-purpose lubricant for spark plugs, lug nuts, exhaust studs, and general electrical protection.
The CRC Disc Brake Quiet product is built with a singular mission: to kill the noise in your braking system. Its formulation creates a water-resistant film that can withstand high temperatures generated during braking events. This isn't just a generic grease; it is engineered to absorb the specific frequencies that cause squeaks and squeals. The key mechanism here is vibration damping. When you apply this compound to the back of your disc pads, it acts as a buffer that stops the metal-on-metal chatter often heard when stopping a car.
This product is ideal for the owner who hears a high-pitched whine every time they press the brake pedal. If your vehicle has non-shimmed disc pads and the metal backing plate is vibrating against the caliper bracket, this is the exact chemical solution required. It is designed to be applied directly to the back of the pads, creating a silent barrier between the hard metal components. The release date of 1997 indicates a long-standing reputation for this specific application, suggesting the formula has been refined over decades to handle the thermal stress of daily driving without breaking down.
However, you must skip this product if you are looking for a general-purpose lubricant or something to use on electrical connections. It is a "No Color" compound meant for one specific job: quieting brakes. It comes in a small 4 Fl Oz container, which suggests it is intended for a few brake jobs rather than a full overhaul of an entire fleet of vehicles. If you have brake pads that already include factory shims or if you are trying to solve a grinding issue caused by worn-out rotors, this compound will not fix the root mechanical problem. It only addresses the noise symptom through vibration damping.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-11-07 · 6 min read · Independent comparison
Keze Dielectric Grease Automotive takes a completely different approach by focusing on protection and longevity rather than just noise reduction. This product is a highly refined blend containing copper powder, lithium composite, and petroleum distillates. The inclusion of copper powder makes it a powerful anti-seize lubricant. Its primary strength lies in preventing metal parts from rusting, corroding, galling, or seizing up. While it can be used on brake assemblies like guide pins and hub bolts, its real power shines in high-heat environments where other greases would melt away or turn into carbon.
This product is perfect for anyone working on the engine bay or suspension components that face extreme conditions. It handles temperatures ranging from -30°F to 1800°F, which means it stays stable whether you are starting a cold car in winter or working near an exhaust manifold in summer. It is particularly noted for its ability to extend the life of spark plugs, bulb sockets, and ignition coils. By coating these electrical threads, it prevents arcing and ensures optimal engine performance. If you are assembling antomotive metal parts that need to come apart easily later, this grease enables easy disassembly even after years of exposure to heat and moisture.
You should consider Keze if you need a multi-pack solution for various maintenance tasks. It is suitable for a wide array of applications beyond just brakes, including lawnmowers, oxygen sensors, and exhaust manifold studs. However, do not expect it to perform the same vibration-damping magic as a dedicated brake silencer. While it lubricates, it is not primarily marketed as a noise-absorbing agent for the specific friction dynamics of disc pad backs. It is a heavy-duty protector first and a lubricant second.
• Best for specific brake noise → CRC Disc Brake Quiet, because it is explicitly designed to dampen vibrations and absorb squeaks on pad backs.
• Best for extreme heat resistance → Keze Dielectric Grease, thanks to its verified range of -30°F to 1800°F compared to standard brake compounds.
• Best for electrical protection → Keze Dielectric Grease, as it prevents arcing and corrosion on spark plugs and ignition coils effectively.
• Best for rust prevention → Keze Dielectric Grease, due to the copper anti-seize blend that actively fights seizing and galling.
• Best for ease of disassembly → Keze Dielectric Grease, allowing you to remove bolts and studs exposed to high temps without them being stuck forever.
• Best for simple, targeted repair → CRC Disc Brake Quiet, offering a focused solution for the back of non-shimmed disc pads without extra ingredients.
• Best value for multiple uses → Keze Dielectric Grease, covering everything from tires to exhaust studs, whereas CRC is limited to brake pads.
• Best for tire maintenance → Both products have distinct roles here; CRC helps ensure your braking system doesn't interfere with tire wear via noise/vibration issues, while Keze protects the wheel lug nuts and hubs from seizing, ensuring safe removal during rotation.
In my opinion, I would buy the Keze Dielectric Grease Automotive for most automotive maintenance scenarios because its versatility and extreme temperature tolerance make it indispensable for protecting critical engine and suspension components. It handles the heavy lifting of preventing rust and seizing across a wider range of parts, from spark plugs to brake guide pins. However, if your sole priority is eliminating a persistent brake squeal on non-shimmed pads, I recommend sticking with CRC Disc Brake Quiet, as its specific vibration-damping chemistry is tailored exactly for that task. Ultimately, for comprehensive tire maintenance and overall vehicle health, the robust protection offered by Keze provides the better foundation, though keeping CRC on hand for that specific brake noise issue is a smart move.
While Keze can lubricate brake guide pins and hardware, it is not formulated to dampen the specific vibrations of disc pad backs like CRC is, so it may not eliminate squeaks as effectively.
The product data specifies it is for use on the backs of non-shimmed disc pads, indicating it is designed specifically for disc brake systems rather than drum assemblies.
Keze is rated for a massive range from -30°F to 1800°F, making it significantly more resistant to high heat than many standard lubricants found in typical brake kits.
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