Permatex Ultra Black RTV Silicone Gasket Maker, 6 × 0.5 oz Tubes — Oil-Resistant, Sensor-Safe

Designed for modern engines and service environments, this Ultra Black formula offers strong adhesion, low odor, and compatibility with sensors and high-tech materials. Its patented adhesion system maintains flexibility and oil resistance so gaskets stay effective under vibration, heat cycles, and exposure to auto fluids. Packaged as six half-ounce tubes, it’s convenient for workshops, dealerships and home mechanics who need a reliable RTV that meets OEM-style performance and warranty requirements.

How does this gasket maker handle high temperatures and fluids?

The Permatex Ultra Black formula resists a wide range of automotive fluids and stays flexible across extreme temperatures. It’s engineered to tolerate heat cycles common to engines and transmissions while maintaining a sealing surface that won’t crumble or harden prematurely.

• Intermittent temperature tolerance up to 500°F.
• Resists oils, coolants, transmission fluid and many shop chemicals.
• Formulated to retain torque and resist vibration-induced leaks.

Is this safe to use around modern sensors and sensitive components?

Yes — Ultra Black is sensor-safe and non-corrosive, making it suitable for components with oxygen sensors or electrical sensing devices nearby. Its low-odor, fast-curing nature also reduces contamination risk during installation.

• Sensor-safe formulation for O2 sensors and other engine monitors.
• Low odor and non-corrosive chemistry for safer handling.
• Works on aluminum, bi-metals and many modern plastics used in engines.

Which surfaces and parts can I seal with these 0.5 oz tubes?

The half-ounce tubes are sized for precise application on smaller engine and drivetrain seals, but still capable for common larger flanges when used appropriately. Permatex recommends uses that match OE silicone gasket performance for both production and repair settings.

• Valve covers and valve cover seams
• Oil pans, transmission pans and timing covers
• Intake manifold end seals and many common engine flanges

How does pack size and packaging benefit mechanics and shops?

Coming as a six-pack of 0.5 oz tubes, this set is handy for multiple small jobs or for shops that need controlled, low-waste cartridges. The smaller tubes let technicians apply a bead accurately without excess product waste and simplify inventory for warranty-compliant repairs.

• Six compact 0.5 oz tubes for multiple repairs or staged use.
• Precision application reduces mess and material loss.
• Meets OEM-style performance for warranty and dealership requirements.

Who is this for: Permatex Ultra Black 22072-6PK is aimed at professional technicians, dealership service departments and knowledgeable DIYers who require a durable, sensor-safe RTV sealant that conforms to modern engine materials and warranty standards. If you need a fast-curing, oil-resistant silicone that provides reliable torque retention and vibration resistance across common automotive service applications, this six-pack of 0.5 oz tubes offers convenient, ready-to-use supply for routine maintenance and repairs.