{"product_id":"permatex-ultra-black-rtv-silicone-gasket-maker-pack-of-12-3-35-oz-tubes-oil-resistant-sensor-safe","title":"Permatex Ultra Black RTV Silicone Gasket Maker, Pack of 12 — 3.35 oz Tubes, Oil-Resistant \u0026 Sensor-Safe","description":"\u003cp\u003e\u003cstrong\u003ePermatex Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker is a sensor-safe, fast-curing silicone sealant designed to form flexible, oil-resistant gaskets for automotive and drivetrain use.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for modern engines and service applications, this 12-pack of 3.35 oz tubes provides a ready supply of a non-corrosive, low-odor gasket maker that adheres to common engine materials while resisting oil, heat, and vibration. The formula is engineered to meet OEM performance standards and support warranty-sensitive repairs by delivering consistent torque retention and compatibility with engine sensors and newer component substrates.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this product resist oil and remain flexible over time?\u003c\/h3\u003e\n\u003cp\u003eThe Ultra Black formula incorporates a patented adhesion system that keeps the cured silicone both oil-resistant and elastic. That combination lets the gasket absorb engine movement and vibration without hardening or breaking down when exposed to engine fluids.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatented adhesion chemistry for long-term oil resistance\u003c\/li\u003e\n  \u003cli\u003eHigh flexibility to maintain a seal under vibration and thermal cycling\u003c\/li\u003e\n  \u003cli\u003eDesigned to withstand auto and shop fluids without swelling or softening\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat temperatures and conditions will this gasket maker tolerate?\u003c\/h3\u003e\n\u003cp\u003eThis RTV material is formulated for a broad temperature band to handle typical engine and drivetrain environments. It stays stable at low temperatures and resists intermittent high heat, making it suitable for areas near engines, transmissions and hot exhaust components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePerformance from -65°F up to 500°F intermittently\u003c\/li\u003e\n  \u003cli\u003eResists repeated heat exposure, oil contamination and mechanical vibration\u003c\/li\u003e\n  \u003cli\u003eSuitable for both cold starts and hot operating conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere should I use Permatex Ultra Black in my vehicle?\u003c\/h3\u003e\n\u003cp\u003eThe product is intended for common sealing locations where oil resistance and sensor safety matter. It works as a gasket replacement or supplement on flat mating surfaces and is compatible with many modern materials used in vehicle assemblies.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eValve cover gaskets and oil pan flanges\u003c\/li\u003e\n  \u003cli\u003eIntake manifold end seals and timing chain covers\u003c\/li\u003e\n  \u003cli\u003eTransmission pans and other drivetrain components that require oil resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs it safe with sensors and newer engine materials?\u003c\/h3\u003e\n\u003cp\u003eYes — the formulation is non-corrosive and designed to be sensor-safe, helping avoid interference with oxygen sensors and other monitoring devices. Its low odor and fast cure profile reduce handling time while meeting OEM and dealership service expectations for warranty-sensitive repairs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-corrosive, low-odor silicone suitable near electronic sensors\u003c\/li\u003e\n  \u003cli\u003eMeets OEM-style silicone gasket performance requirements\u003c\/li\u003e\n  \u003cli\u003eRecommended where extended drivetrain warranty compliance is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Permatex Ultra Black Maximum Oil Resistance RTV is aimed at professional technicians, independent mechanics, and serious DIYers who need an oil-tolerant, flexible gasket compound for engine and drivetrain sealing. The 12-tube pack is practical for busy shops or enthusiasts who perform regular maintenance and want a reliable, sensor-safe silicone that meets OEM-style expectations. Use it where a formed silicone gasket or on-the-spot seal is needed and where compatibility with modern materials and sensors is important.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this gasket maker on aluminum parts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The formula bonds to aluminum and other common engine materials while remaining oil-resistant and flexible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does it take to cure before reassembly?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Cure time varies with bead size and temperature; skin forms quickly, but full cure typically requires several hours to overnight.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Permatex","offers":[{"title":"Default Title","offer_id":67585823998137,"sku":"B001REZBA2","price":131.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/permatex-ultra-black-front-packaging.jpg?v=1790478250","url":"https:\/\/redleafauto.ca\/products\/permatex-ultra-black-rtv-silicone-gasket-maker-pack-of-12-3-35-oz-tubes-oil-resistant-sensor-safe","provider":"Redleaf Auto","version":"1.0","type":"link"}