Permatex The Right Stuff Gasket Maker 10.1 oz Pack of 2 - Fast

Our review of Permatex The Right Stuff Gasket Maker focuses on its use as a fast, flexible RTV solution for mechanics and DIYers who need a reliable formed-in-place gasket. In practical use the metallic black paste lets you reassemble equipment immediately without waiting for a full cure, which is the single biggest reason to buy: it restores leak-proof seals quickly on oil- and fluid-exposed assemblies. This review looks at how it performs on valve covers, oil pans, differentials and small pumps and why its temperature tolerance and oil resistance matter for automotive and marine repairs.

Key Features

• Instant reassembly: The one-minute formulation lets assemblies be put back into service immediately, saving time during repairs and maintenance.
• Wide temperature range: Rated continuous from -75 to 450 deg F, it holds seals in both cold starts and high-heat engine bays.
• Oil and fluid resistance: Specifically formulated to resist oil and transmission fluid, reducing the risk of seal failure in lubricated components.
• Thixotropic paste consistency: The paste holds its shape on vertical surfaces and resists running, making application neater on covers and housings.
• Versatile substrate compatibility: Works on common metals such as aluminum, brass, iron and steel, so it suits a broad range of mechanical parts.
• Convenient dispenser: Supplied in a cartridge with nozzle for controlled application, which helps form consistent gaskets.

Who It's For

Permatex The Right Stuff is well suited to automotive technicians, home mechanics and marine owners who need a durable, fast-setting formed-in-place gasket for valve covers, oil pans, thermostat housings, pumps and gearboxes. Its oil resistance and broad temperature tolerance make it a practical choice for engines and transmission housings where heat and fluids are present.

Those who should look elsewhere include users who want a permanently cured, thick gasket material that must be machined or who require a food-grade or potable-water certified sealant; this product is formulated for mechanical assemblies and is not indicated for drinking water systems.

Pros & Cons

Pros

• Works well for immediate reassembly and holds up under heat and vibration.
• Value for money in a pack of two, offering multiple uses across projects.
• Good sealability on differentials, covers and housings, with many customers reporting long-term leak resistance.
• Easy-to-control cartridge nozzle for tidy formed-in-place gaskets.

Cons

• Removal can be difficult once fully set, so joints may need careful disassembly techniques.
• Metallic black appearance may differ from OEM gasket color and could be visible at some joints.

Specifications

Our Verdict

Permatex The Right Stuff is a practical, time-saving gasket maker for anyone repairing automotive or marine mechanical assemblies where oil resistance and high temperature stability matter. Its instant reassembly capability and durable sealability make it good value for frequent users, while the cartridge dispenser keeps application tidy. Choose it for engine covers and housings where fast, reliable sealing is needed.

Frequently Asked Questions

Can I reassemble parts immediately after applying this gasket maker?
Yes, the product is formulated for immediate reassembly and does not require a full cure before putting equipment back into service.

Is it compatible with transmission and engine oil?
Yes, it is designed to be oil and transmission fluid resistant for use on lubricated components.

What metals can it be used on?
It is suitable for common substrates including aluminum, brass, iron and steel.