Premium High-Temp Sealant for Extreme Automotive Applications – Ultra Plus® 999 RTV Silicone Gasket Maker delivers super high-temperature resistance up to 650°F (343°C) and is specially designed for exhaust manifolds, turbo systems, and high-performance engine components. With a neutral cure, low odor formula, it is oxygen sensor safe and non-corrosive, making it ideal for modern engines and emissions systems.
Oxygen Sensor Safe
Sensor-safe formulation ensures compatibility with modern engine electronics and emissions systems.
Non-Corrosive
Neutral cure chemistry won’t damage sensitive components or metal surfaces—safe for aluminum and other alloys.
Super High Temp: Effective Up to 650°F (343°C)
Built to withstand extreme heat from exhaust manifolds, turbochargers, and other high-temp applications.
Great for Exhaust Manifolds
Engineered for areas exposed to intense thermal cycling and vibration—provides a strong, lasting seal.
Neutral Cure, Low Odor
Low-odor formula is ideal for enclosed spaces and professional repair environments.
Flexible, Leak-Proof Seal
Cures into a durable, flexible gasket that resists cracking, shrinking, and leaks under pressure and heat.
Exhaust manifolds and turbo systems
Timing covers, valve covers, oil pans
Oxygen sensor-equipped vehicles
Import and domestic high-performance engines
Automotive professionals and advanced DIYers
For the highest level of temperature resistance, reliability, and sensor-safe performance, Ultra Plus® 999 is the go-to sealant for demanding engine repairs. It’s trusted by professionals who need a clean cure and powerful hold—especially under pressure.
Order Now and seal with confidence—Ultra Plus® 999 is engineered for performance when heat is at its highest.
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410-AB Blue 411-AB Red412-AB Black
Buy on Amazon – Blue| Part No. | Size | Pcs/Case | Color |
|---|---|---|---|
| 410-AB | 3 OZ/85g | 12/CASE | Blue |
| 411-AB | 3 OZ/85g | 12/CASE | Red |
| 412-AB | 3 OZ/85g | 12/CASE | Black |
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