Permatex Ultra Black Hi-Temp RTV Silicone Gasket Maker
Key item features
- High Performance: Meets or exceeds OE performance spec: GM#9985675
- Temperature Resistant: Resists temperatures up to 500 degrees
- Fast Curing: Features a fast-curing formula for quick repairs
- Low Odor: Designed with a low odor for user comfort
- Noncorrosive: Noncorrosive properties ensure safe application
- Maximum Coverage: Provides maximum gap coverage and oil resistance
- Sensor Safe: Safe for use with sensors
- Convenient Size: Each tube contains 3.35 oz of high-temp gasket maker
Specs
- Industrial sealant typeRTV Silicone Gasket Maker
- Rec locationIndoor, Outdoor
- ColorUltra Black
- Volume capacity3.35 oz
- FeaturesNon-Corrosive
- MaterialSilicone
- Free shipping
Free 30-day returns
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About this item
Product details
Permatex Ultra Black Hi-Temp RTV Silicone Gasket Maker:
- Meets or exceeds OE performance spec: GM#9985675
- Resists temperatures up to 500 degrees
- Fast-curing formula
- Low odor
- Noncorrosive
- Maximum gap coverage and oil resistance
- Safe for sensors
- Tube contains 3.35 oz of high-temp gasket maker
Specifications
Industrial sealant type
Rec location
Brand
Color
Directions
Instructions
Safe Handling Instructions
Warranty
Warranty information
Warnings
Warning Text
Customer ratings & reviews
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Showing 1-3 of 6 reviews
Verified Purchase
make a gasket
this product is great for either making a gasket or using it to seal a gasket
Great for a gasket on my water pump
I used this ultra black to make a water pump gasket for my 1978 Datsun 810. It worked fine, but here are some tips. One: It is much thicker than Permatex No. 1 and No. 2 and therefore harder to work with. Leaving it out in the sun before using it might help. Two: Follow the directions. Especially the timeline. If you don't have 24 hours to do the job, then wait til later. Three: Cleaning your fingers is easy with Gojo and a rag.
Great for gaskets or permanent rubber glue!
Ultra Black RTV sealer works great for valve cover gaskets, oil pan, transmission, diff gaskets. I know people who have used this to make head gaskets on hot engines that last for tens of thousands of miles and counting with no leaks. Also works great for gluing speaker cones to diaphragms!


