{"product_id":"permatex-ultra-black-rtv-silicone-gasket-maker-cartridge-10-6-oz-oil-resistant-flexible-sealant","title":"Permatex Ultra Black RTV Silicone Gasket Maker Cartridge 10.6 oz — Oil-Resistant, Flexible Sealant","description":"\u003cp\u003e\u003cstrong\u003ePermatex 24105 Ultra Black RTV is a high-performance, oil-resistant silicone gasket maker supplied in a 10.6 oz cartridge for forming flexible, long-lasting seals on automotive and industrial equipment.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis cartridge contains Permatex Ultra Black RTV, a ready-to-use silicone sealant designed to replace pre-cut gaskets and repair worn sealing surfaces. Formulated for resistance to oil and hydraulic fluids, it cures to a durable, flexible rubber that resists vibration, movement, and leakage at typical engine and equipment operating temperatures. The product dispenses from a standard caulking gun and bonds to metal, glass, and many rigid substrates when properly prepared.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Permatex Ultra Black help prevent oil leaks?\u003c\/h3\u003e\n\n\u003cp\u003eUltra Black creates a continuous, flexible seal that conforms to irregular flanges and mating surfaces, reducing pathways for oil to escape. Its cured silicone remains pliable, compensating for thermal expansion and vibration so the seal stays effective over time.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOil-resistant silicone formulation designed for engine compartments.\u003c\/li\u003e\n  \u003cli\u003eCures to a resilient rubber that tolerates movement and vibration.\u003c\/li\u003e\n  \u003cli\u003eIdeal for replacing gaskets or forming custom seals on valve covers, oil pans, and timing covers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat surfaces and applications is this RTV compatible with?\u003c\/h3\u003e\n\n\u003cp\u003ePermatex Ultra Black adheres well to clean metal, cast iron, aluminum, and some plastics; it is commonly used on automotive engine components and industrial housings. For best adhesion, surfaces should be degreased and dry before application, and non-porous materials can be roughened slightly for improved mechanical grip.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWorks on metal engine parts: valve covers, oil pans, timing covers.\u003c\/li\u003e\n  \u003cli\u003eSuitable for many rigid plastics, glass, and composite flanges when prepped.\u003c\/li\u003e\n  \u003cli\u003eDispenses with a standard 10.6 oz cartridge caulking gun for controlled bead placement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do you apply and cure the gasket maker correctly?\u003c\/h3\u003e\n\n\u003cp\u003eCut the cartridge tip to the desired bead size, puncture the safety seal, and apply an even bead to one mating surface. Assemble parts within the product's working time, allow an initial tack time, then let the silicone cure fully per temperature and humidity conditions for a reliable seal.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCut nozzle to match required bead width; apply consistent bead along flange.\u003c\/li\u003e\n  \u003cli\u003eAssemble parts before skin-over time; torque fasteners as recommended by equipment maker.\u003c\/li\u003e\n  \u003cli\u003eFull cure depends on thickness, temperature, and humidity—follow manufacturer cure guidance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there limitations or precautions to consider?\u003c\/h3\u003e\n\n\u003cp\u003eUltra Black is formulated for oil resistance rather than high-temperature continuous exposure; avoid use where continuous temperatures exceed product specifications. Do not use as a gasket on surfaces that require a non-silicone material or where silicone contamination could interfere with later sealing processes like paint or adhesive bonding.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNot intended where constant extreme temperatures exceed product ratings.\u003c\/li\u003e\n  \u003cli\u003eAvoid use on surfaces that must remain silicone-free for later bonding or painting.\u003c\/li\u003e\n  \u003cli\u003eClean and degrease mating surfaces; remove old gasket material for best results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Permatex 24105 Ultra Black is aimed at mechanics, home DIYers, and maintenance professionals who need a dependable, oil-resistant RTV to form seals on automotive engines and industrial equipment. It suits users who want a cartridge format that fits standard caulking guns for precise application, and who require a flexible, durable gasket substitute where pre-cut gaskets are unavailable or worn.\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 Permatex Ultra Black be used for oil pan gaskets?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it forms flexible, oil-resistant seals suitable for oil pans when surfaces are clean and assembly occurs before skin-over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does the silicone take to cure?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Cure time varies with bead thickness, temperature, and humidity; expect initial skin-over in minutes and full cure in 24–48 hours under typical conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Permatex","offers":[{"title":"Default Title","offer_id":48087365025950,"sku":"B000HBNU9U","price":38.06,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/permatex-ultra-black-front-cartridge.jpg?v=1785921836","url":"https:\/\/northtrailauto.ca\/products\/permatex-ultra-black-rtv-silicone-gasket-maker-cartridge-10-6-oz-oil-resistant-flexible-sealant","provider":"North Trail Auto","version":"1.0","type":"link"}