Permatex Ultra Blue RTV Silicone Gasket Maker, 3 oz - Sensor-Safe OEM Sealant
Permatex Ultra Blue RTV Silicone Gasket Maker, 3 oz - Sensor-Safe OEM Sealant
Permatex Ultra Blue RTV Silicone Gasket Maker is a versatile, sensor-safe sealant engineered to meet OEM performance requirements while delivering long-lasting durability for general-purpose automotive use. This non-corrosive, low-odor silicone formula is safe for oxygen sensors and other electronic components, making it suitable for use on modern, sensor-equipped engines without risk of contamination or malfunction. It provides excellent resistance to automotive fluids and vibration, and it bonds strongly even to oily surfaces where many sealants fail to adhere.
Ultra Blue is designed to replace paper, rubber, cork, and pre-formed gaskets, eliminating the need to source a pre-cut gasket for many general-purpose sealing jobs. It cures to form a flexible, durable seal that withstands temperatures from -65 degrees F to 500 degrees F (-54 degrees C to 260 degrees C) intermittently, covering a wide range of under-hood applications from valve covers to housings and other bolted joints exposed to heat cycling and vibration.
This 3 oz tube is sized for shop or garage use and is intended for general automotive sealing and gasket-making tasks rather than extreme-heat exhaust applications.
Specifications
- Brand: Permatex
- Manufacturer Part Number: PERM81724
- Product Name: Ultra Blue RTV Silicone Gasket Maker
- Color: Blue
- Net Volume: 3 oz
- Weight: 0.2 pounds
- Temperature Range: -65 degrees F to 500 degrees F (-54 degrees C to 260 degrees C) intermittently
- Sensor Safe: Yes, safe for oxygen sensors and electronic components
- Corrosive: Non-corrosive formula
- Odor: Low odor
- Meets OEM Standards: Yes
Frequently Asked Questions
What is Permatex Ultra Blue RTV Silicone Gasket Maker used for? Permatex Ultra Blue RTV Silicone Gasket Maker (PERM81724) is a general-purpose automotive silicone sealant used to form gaskets in place of paper, rubber, cork, or pre-formed gaskets on a wide range of under-hood components.
Is Ultra Blue RTV safe to use near oxygen sensors? Yes, Ultra Blue RTV is a sensor-safe, non-corrosive formula, so it will not damage oxygen sensors or other electronic engine components during use.
What temperature range can Ultra Blue RTV handle? PERM81724 withstands temperatures from -65 degrees F to 500 degrees F (-54 degrees C to 260 degrees C) intermittently, covering typical under-hood heat cycling.
How much does the tube of Ultra Blue RTV weigh? The 3 oz tube of Permatex Ultra Blue RTV Silicone Gasket Maker weighs 0.2 pounds.
Will Ultra Blue RTV bond to oily surfaces? Yes, this formula adheres strongly to oily surfaces, which is useful when a perfectly clean, degreased surface isn't achievable before sealing.
Does Ultra Blue RTV meet OEM specifications? Permatex Ultra Blue RTV Silicone Gasket Maker is engineered to meet OEM performance requirements, making it suitable as a factory-equivalent sealant for general automotive gasket applications.
Can Ultra Blue RTV replace a pre-cut gasket? It can replace paper, rubber, cork, and pre-formed gaskets in general-purpose applications, eliminating the need to source a specific pre-cut gasket.
How is Ultra Blue different from Permatex Ultra Black or Ultra Red RTV? Ultra Blue is formulated for general-purpose automotive sealing with a -65 degrees F to 500 degrees F intermittent range, while Permatex's Ultra Black is built for oil-resistant seals on timing covers and oil pans, and Ultra Red is rated for higher-heat exhaust applications up to 650 degrees F. Choose PERM81724 for general under-hood sealing rather than high-heat exhaust or heavy oil-exposure jobs.
Does Ultra Blue RTV resist vibration once cured? Yes, once cured this silicone sealant provides excellent resistance to vibration as well as exposure to automotive fluids.
Is this an authentic Permatex product? Yes, PERM81724 is genuine Permatex Ultra Blue RTV Silicone Gasket Maker, not a generic or off-brand substitute.
What size does Ultra Blue RTV Silicone Gasket Maker come in? Permatex Ultra Blue RTV Silicone Gasket Maker (PERM81724) is packaged in a 3 oz tube.
Is Ultra Blue RTV low odor? Yes, this is a low-odor formula, making it more comfortable to work with in enclosed shop spaces compared to stronger-smelling sealants.