Permatex Gasket Makers, Sealants & Removers

Why Permatex Sets the Standard in Gasket Makers & Sealants

When it comes to keeping engines leak-free, few names carry as much authority as Permatex. With roots stretching back to 1909, the brand has spent well over a century developing chemical solutions that mechanics and builders rely on every day — from weekend warriors to professional technicians working on high-output race engines. Nowhere is that expertise more apparent than in their comprehensive lineup of Gasket Makers, Sealants & Removers.

A System Built Around Your Application

What sets Permatex apart in this category is not just one product, but an entire engineered system designed to match the right sealing chemistry to the right job. The brand offers three distinct RTV Silicone Gasket Maker formulas — Ultra, Optimum, and The Right Stuff — each available in Black, Grey, and Red to address different operating conditions.

• Black RTV is highly flexible, making it ideal for dissimilar metals that expand and contract at different rates — perfect for oil pans, timing covers, valve covers, and differential covers.
• Grey RTV is engineered for rigidity, excelling in high-vibration, tight-tolerance, and close bolt-pattern applications such as valve covers, water pumps, and thermostat housings.
• Red RTV is formulated to withstand high temperatures and extreme thermal cycling, suiting high-heat applications under the hood.

Innovative Product Lines for Every Skill Level

Within each color, Permatex offers three performance tiers to suit different users and situations. The Ultra series has been the go-to baseline for over 50 years. For performance and heavy-duty builds that require frequent disassembly, the Optimum Easy-Disassembly formula reduces the time it takes to remove and clean old gasket material by up to 90%, without sacrificing sealing strength. And for the fastest return to service, The Right Stuff — available in 1-Minute and 90-Minute cure options — delivers the highest blowout resistance of any Permatex gasket maker, making it the choice for shop professionals who need to turn bays quickly or get a race vehicle back on track before the weekend ends.

Beyond RTV: Coatings, Sealants & Removers

Permatex's sealant lineup extends well beyond RTV silicone. Their gasket sealants and coatings are designed to enhance the performance of cut gaskets, with resin-based formulas available in both hardening and non-hardening versions, and silicone-based cut gasket coatings specifically engineered to fortify and protect paper or cork gaskets against automotive fluids and gases. Anaerobic gasket makers round out the lineup, filling imperfections in machined metal surfaces to eliminate potential leak paths — curing only in the absence of air once flanges are assembled.

The modern engine presents complex sealing challenges: extended warranties, oxygen sensors, aluminum and bi-metal alloy components, and high-tech plastics all demand sealants with outstanding oil resistance, excellent torque retention, and sensor-safe properties. Permatex has engineered its gasket maker portfolio with exactly these demands in mind, and the results have earned the trust of OEM assembly lines and aftermarket shops alike.

The Right Sealant for Every Situation

Whether you are resealing an oil pan on a daily driver, rebuilding a high-performance engine, or coating a paper gasket on a classic car restoration, Permatex's lineup of gasket makers, sealants, and removers offers a precisely formulated answer. Browse the full selection below to find the product that fits your application.