Pro-Seal
Pro-Seal 80047 RTV Silicone Sealant 11.1 oz Cartridge Black
Oil-resistant RTV silicone seals metal surfaces, withstands -75 to 500 °F, and cures fully in 24 hours
- TypeGasket Sealant
- Color/FinishBlack
- Withstands extreme temperatures from -75 to 500 °F
- Oil-resistant formula seals engine and transmission components reliably
- Sensor-safe chemistry protects oxygen sensors and electronic systems
- Begins hardening in 10 to 20 minutes for fast repairs
- Fully cures in 24 hours to a durable flexible gasket
Product Identity
Pro-Seal 80047 is an RTV silicone sealant supplied in an 11.1 oz cartridge for automotive and general sealing tasks. It is formulated to replace conventional gaskets, seals and dressings on metal substrates. The black compound is sensor safe and uses a low volatile formula suitable for professional or DIY use.
Deciding Specification
The sealant withstands a continuous temperature range from -75 to 500 degrees F, which determines whether it suits the intended thermal environment. It begins to harden in 10 to 20 minutes and reaches full cure in 24 hours, with a specific gravity of 1.04 and a flash point of 250 degrees F.
Fit and Alternatives
This product suits mechanics and technicians who need an oil-resistant, sensor-safe gasket maker that cures at room temperature. Buyers who require a different colour, a faster cure schedule, or a non-silicone chemistry should look at something else.
Highlights
- Withstands extreme temperatures from -75 to 500 °F
- Oil-resistant formula seals engine and transmission components reliably
- Sensor-safe chemistry protects oxygen sensors and electronic systems
- Begins hardening in 10 to 20 minutes for fast repairs
- Fully cures in 24 hours to a durable flexible gasket
Specifications
| Type | Gasket Sealant |
|---|---|
| Color/Finish | Black |
| Brand | PRO SEAL |
Questions about this item
What does the 500 degree Fahrenheit rating mean once the sealant is in an engine?
The sealant remains stable up to 500 degrees Fahrenheit, so it withstands typical engine operating temperatures without breaking down.
How does the RTV silicone chemistry affect what the sealant can handle in practice?
As an RTV silicone, it cures at room temperature to a flexible rubber that resists oil, vibration and thermal cycling from -75 to 500 degrees Fahrenheit.
What does the 11.1 oz cartridge need to fit a standard caulking gun?
The 11.1 oz cartridge uses a standard caulk-gun diameter and includes a nozzle, so it fits any ordinary manual or pneumatic gun.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



