Permatex Ultra Grey RTV Silicone Gasket Maker is one of the most trusted sealing solutions for engine builders, professional technicians, and performance enthusiasts. Designed specifically for high-torque applications and assemblies exposed to significant vibration, Ultra Grey provides a durable, flexible seal that helps prevent leaks while maintaining long-term reliability. Whether you’re installing a timing cover, oil pan, differential cover, thermostat housing, water pump, valve cover, or intake manifold component, this premium RTV sealant delivers exceptional sealing performance where conventional gaskets may fail. Its fast-curing formula and superior resistance to automotive fluids make it a staple product in professional repair shops and high-performance engine builds.
One of the key advantages of Permatex Ultra Grey is its ability to maintain flexibility after curing while resisting shrinking, cracking, and thermal cycling. Engines and driveline components experience constant expansion and contraction as temperatures change, and a rigid seal can eventually fail under these conditions. Ultra Grey’s advanced silicone formula creates a resilient gasket that adapts to movement and vibration while maintaining an effective seal. This makes it especially valuable for modern HEMI engines, performance vehicles, and high-horsepower applications where sealing integrity is critical.
The sensor-safe, low-odor formula is designed to resist oil, coolant, transmission fluid, gear oil, and other common automotive chemicals. This broad chemical resistance allows it to be used throughout the vehicle in a variety of applications. For enthusiasts performing engine rebuilds, camshaft installations, oil pump replacements, timing chain service, rear main seal repairs, or differential maintenance, having a reliable RTV sealant on hand is essential. Permatex Ultra Grey helps ensure professional-quality results while minimizing the risk of fluid leaks that could lead to additional repairs or downtime.
Unlike many generic gasket makers, Ultra Grey has become a preferred choice among OEM technicians and performance builders because of its excellent adhesion and durability. It bonds effectively to aluminum, steel, cast iron, and many composite materials commonly found in modern automotive applications. Whether you’re working on a daily driver, race car, off-road vehicle, or dedicated drag racing build, this gasket maker provides the confidence needed to complete repairs and upgrades correctly.
If you’re looking for additional parts, check out our catalog for more professional-grade products designed to support your next project.
Specifications & Features
- Manufacturer: Permatex
- Product Name: Ultra Grey RTV Silicone Gasket Maker
- Product Type: RTV Silicone Gasket Maker
- Part Number: 82194
- Size: 0.5 oz Tube
- Color: Grey
- Formula Type: RTV Silicone
- Sensor Safe: Yes
- Low Odor Formula: Yes
- Non-Corrosive: Yes
- Fast Curing Formula
- High-Torque Application Design
- Excellent Vibration Resistance
- Superior Oil Resistance
- Coolant Resistant
- Transmission Fluid Resistant
- Gear Oil Resistant
- Water Resistant
- Flexible After Curing
- Resists Shrinking and Cracking
- Excellent Adhesion Properties
- Suitable for Aluminum Components
- Suitable for Steel Components
- Suitable for Cast Iron Components
- Temperature Resistant
- Ideal for Engine Assembly and Repairs
- Common Applications:
- Oil Pans
- Timing Covers
- Valve Covers
- Water Pumps
- Thermostat Housings
- Differential Covers
- Transmission Components
- Rear Main Seal Housings
- Vehicle Compatibility: Universal
- Year Compatibility: Universal
- Net Weight: 0.5 oz
- Made in USA
- Professional and DIY Friendly
