Permatex Ultra Red RTV Silicone Gasket Maker, 3 oz, High-Temperature Sensor-Safe Sealant
Permatex Ultra Red RTV Silicone Gasket Maker, 3 oz, High-Temperature Sensor-Safe Sealant
Permatex Ultra Red RTV Silicone Gasket Maker is a high-temperature silicone sealant designed for demanding automotive and marine engine applications. This advanced, low-odor formula withstands continuous temperatures up to 650 degrees F (343 degrees C), surpassing the performance of earlier red RTV formulas and holding up under extreme thermal cycling. It is sensor-safe and non-corrosive, making it suitable for use on engines equipped with oxygen sensors and other electronic components without risk of damage or false readings.
This 3 oz tube replaces pre-cut gaskets and is engineered for use on exhaust manifolds, headers, turbochargers, and slip-fit exhaust system connections, where conventional gasket materials break down under sustained heat and vibration. The silicone cures to form a durable, flexible seal that maintains its bond through repeated heat-up and cool-down cycles, helping prevent leaks at high-stress sealing points.
Specifications
- Brand: Permatex
- Manufacturer Part Number: 81630
- Product Name: Ultra Red RTV Silicone Gasket Maker
- Net Contents: 3 fluid ounces
- Weight: 0.2 pounds
- Color: Red
- Material: RTV silicone
- Maximum Temperature Resistance: 650 degrees F (343 degrees C)
- UPC: 686226816306
- Sensor-Safe: Yes, non-corrosive formula
- Recommended Applications: Exhaust manifolds, headers, turbochargers, slip-fit exhaust systems
Fitment
Universal automotive and marine sealing applications; not specific to a particular make, model, or engine.
Replaces (OEM)
Replaces pre-cut gaskets in high-temperature sealing applications; no specific OEM cross-reference part numbers apply.
Frequently Asked Questions
What temperature can Permatex Ultra Red RTV Silicone Gasket Maker withstand? It withstands continuous temperatures up to 650 degrees F (343 degrees C), making Permatex part 81630 suitable for high-heat areas like exhaust manifolds and turbochargers.
Is this RTV safe to use near oxygen sensors? Yes, Permatex Ultra Red RTV (part 81630) is a sensor-safe, non-corrosive formula that will not damage oxygen sensors or other electronic engine components.
How much sealant is in one tube of Permatex 81630? Each tube contains 3 fluid ounces of Ultra Red RTV silicone and weighs 0.2 pounds.
Can this product replace a pre-cut gasket? Yes, Permatex Ultra Red RTV Silicone Gasket Maker is formulated to replace pre-cut gaskets in applications subject to high heat and thermal cycling.
What color does Permatex Ultra Red RTV cure to? The sealant is red in color, both as applied and after curing.
Where should Permatex 81630 be used on an engine? It is recommended for exhaust manifolds, headers, turbochargers, and slip-fit exhaust system connections where extreme thermal cycling occurs.
Does Ultra Red RTV have a strong odor? No, Permatex Ultra Red RTV Silicone Gasket Maker uses a low-odor formula, an improvement over earlier red RTV products.
Is Permatex Ultra Red RTV corrosive to metal engine parts? No, this is a non-corrosive silicone formula, safe for use on metal engine components and sensors.
How does Ultra Red RTV compare to earlier red RTV sealants? Permatex Ultra Red RTV Silicone Gasket Maker outperforms previous generation red RTV formulations, offering higher heat resistance up to 650 degrees F and a lower-odor application.
Is this sealant suitable for engines with high thermal cycling? Yes, Permatex part 81630 is specifically designed for environments with extreme thermal cycling, such as exhaust and turbocharger systems.