{"product_id":"permatex-ultra-grey-rtv-silicone-gasket-maker-13-oz-rigid-high-torque-sensor-safe","title":"Permatex Ultra Grey RTV Silicone Gasket Maker 13 oz — Rigid High-Torque, Sensor-Safe","description":"\u003cb\u003ePermatex Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker is a sensor-safe, non-corrosive sealant formulated for high-torque, high-vibration engine joints.\u003c\/b\u003e\n\n\u003cp\u003eThis 13 oz cartridge supplies a professional-grade silicone RTV designed to stand up to severe service on import and domestic engines. It tolerates a wide temperature span, resists oils and coolant, and cures to a rigid, tear-resistant gasket that maintains sealing integrity under vibration and torque. The low-odor, non-corrosive formulation is suitable for sensitive assemblies and meets OEM performance expectations for many maintenance and repair tasks.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this gasket maker hold up under heavy vibration and torque?\u003c\/h3\u003e\n\u003cp\u003eThe Ultra Grey formula cures to a firm, durable gasket that resists deformation from repeated stress and high clamping forces. Its rigid set reduces extrusion and keeps sealing surfaces aligned, helping prevent leaks where engines see constant movement or heavy loads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRigid-cure RTV resists squeeze-out under clamping pressure\u003c\/li\u003e\n  \u003cli\u003eFormulated for high-vibration automotive applications\u003c\/li\u003e\n  \u003cli\u003eMaintains shape at clamped seams and threaded fasteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this safe to use near sensors and delicate components?\u003c\/h3\u003e\n\u003cp\u003eYes — this product is described as sensor-safe and non-corrosive, minimizing the risk to nearby electronics and metal surfaces when used as directed. Its low-odor chemistry also reduces fumes during application, improving workshop comfort.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-corrosive chemistry protects metal parts and fittings\u003c\/li\u003e\n  \u003cli\u003eSensor-safe formulation for modern engine assemblies\u003c\/li\u003e\n  \u003cli\u003eLow odor for easier application in enclosed spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat fluids and temperatures can it withstand?\u003c\/h3\u003e\n\u003cp\u003eUltra Grey offers strong resistance to motor oils, coolant, and common shop fluids, making it suitable for areas exposed to fluids and heat. It performs across a broad operating range, with intermittent temperature resistance that covers many engine and drivetrain environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eResists oils, coolants, and routine shop chemicals\u003c\/li\u003e\n  \u003cli\u003eTemperature capability from very cold up to high intermittent heat\u003c\/li\u003e\n  \u003cli\u003eRecommended for applications that alternate between hot and cold cycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engine parts is this gasket maker best suited for?\u003c\/h3\u003e\n\u003cp\u003eDesigned for sealing hard-to-reach or irregular surfaces, this RTV is commonly used where a formed gasket is preferred to a pre-cut paper or cork gasket. It adheres to metal and many mating surfaces to create a dependable seal on common engine components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eValve covers and oil pans\u003c\/li\u003e\n  \u003cli\u003eIntake manifold end seals and timing covers\u003c\/li\u003e\n  \u003cli\u003eWater pumps and thermostat housings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Technicians, home mechanics, and restoration enthusiasts who need a robust gasket material for high-torque or vibration-prone assemblies will benefit from Permatex Ultra Grey. If you work on engines that experience heavy clamping forces, frequent thermal cycling, or exposure to fluids, this 13 oz cartridge offers a durable, OEM-grade option for creating long-lasting seals without specialized gaskets.\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 engine parts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It adheres to metal surfaces including aluminum and cures to a rigid, oil-resistant seal suitable for engine components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long before the seal fully cures?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Skin forms in about 15–30 minutes; full cure time varies with bead thickness but is typically 24 hours at room temperature.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Permatex","offers":[{"title":"Default Title","offer_id":55167903007063,"sku":"B000HBGK7O","price":40.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/permatex-front-packaging_f9d6d595-9e8f-4fe2-928e-df221195adcb.jpg?v=1790395973","url":"https:\/\/britishgarage.co.uk\/products\/permatex-ultra-grey-rtv-silicone-gasket-maker-13-oz-rigid-high-torque-sensor-safe","provider":"British Garage","version":"1.0","type":"link"}