{"product_id":"loctite-copper-anti-seize-lubricant-brush-top-jar-8-oz-high-temp-protection-conductive-paste","title":"Loctite Copper Anti-Seize Lubricant Brush-Top Jar — 8 oz, High-Temp Protection \u0026 Conductive Paste","description":"\u003cp\u003e\u003cstrong\u003eLoctite 38650 Copper Anti-Seize Lubricant (8 oz, brush top) is a high-temperature copper paste formulated to prevent seizing, corrosion and galling on threaded and metal mating surfaces.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis brush-top jar contains a copper-filled anti-seize compound designed for demanding automotive and industrial service where heat, pressure and dissimilar metals can cause threads and fittings to lock up. The formula stays stable over a wide thermal range and helps maintain serviceability of fasteners, sensors and fittings while also providing electrical conductivity where needed.\u003c\/p\u003e\n\n\u003ch3\u003eWhere is Loctite 38650 most useful?\u003c\/h3\u003e\n\u003cp\u003eThe paste is intended for threaded connections and metal-to-metal contact points exposed to elevated temperatures and corrosive conditions. It's commonly used on exhaust components, engine bolts, sensors and battery terminals to ease future disassembly and reduce damage from galling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpark plug threads in aluminum engines\u003c\/li\u003e\n  \u003cli\u003eExhaust manifold and header bolts\u003c\/li\u003e\n  \u003cli\u003eOxygen and knock sensor threads\u003c\/li\u003e\n  \u003cli\u003eThermostat housings, fuel fittings, battery cable connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the copper anti-seize perform under heat and harsh environments?\u003c\/h3\u003e\n\u003cp\u003eLoctite 38650 is formulated to remain effective across a broad temperature span, resisting breakdown, oxidation and washout under typical automotive and industrial heat loads. Its copper fillers help maintain conductivity and mechanical separation even at high temperatures, which protects threads from fusing or corroding together.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTemperature tolerance from about -30°F up to 1800°F (-34°C to 982°C)\u003c\/li\u003e\n  \u003cli\u003eCopper particles support electrical continuity where required\u003c\/li\u003e\n  \u003cli\u003eResists corrosion and reduces galling between dissimilar metals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I apply the brush-top anti-seize correctly?\u003c\/h3\u003e\n\u003cp\u003eThe jar’s built-in brush applicator makes it straightforward to coat threads and contact surfaces evenly. Apply a thin, even layer to clean mating surfaces; avoid over-application to prevent excess compound from migrating into unwanted areas.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClean threads and seating surfaces of oil, dirt and old sealant first\u003c\/li\u003e\n  \u003cli\u003eBrush a light, continuous coat onto male threads or contact areas\u003c\/li\u003e\n  \u003cli\u003eWipe away excess and torque per manufacturer specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill using this anti-seize affect torque readings or sensor function?\u003c\/h3\u003e\n\u003cp\u003eA properly applied, light coating can slightly change friction and therefore torque readings; adjust torque practices accordingly and follow component manufacturer guidance. For sensors, use only as recommended — the copper content provides conductivity but do not allow paste to contaminate sensing elements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply sparingly on torque-critical fasteners and follow torque charts\u003c\/li\u003e\n  \u003cli\u003eKeep compound off sensor faces; limit to threads only when specified\u003c\/li\u003e\n  \u003cli\u003eRe-torque procedures may differ if anti-seize is used—consult specs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Mechanics, fleet technicians, heavy equipment operators and DIY enthusiasts who need a durable, high-temperature anti-seize for engines, exhaust systems and electrical grounding points will benefit from Loctite 38650. Choose this 8 oz brush-top jar when you want easy application, long thermal stability and copper-enhanced conductivity to simplify maintenance and protect metal fasteners from seizing, corrosion and galling.\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: What temperature range does Loctite 38650 cover?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It functions from about -30°F up to 1800°F (-34°C to 982°C), suitable for many high-heat engine and exhaust applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this on spark plug threads in aluminum heads?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—apply a light coat to spark plug threads in aluminum to help prevent seizure and make future removal easier.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Loctite","offers":[{"title":"Default Title","offer_id":55161762316631,"sku":"B0006Q7H36","price":29.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/loctite-38650-front-packaging-brush-top.jpg?v=1790332148","url":"https:\/\/britishgarage.co.uk\/products\/loctite-copper-anti-seize-lubricant-brush-top-jar-8-oz-high-temp-protection-conductive-paste","provider":"British Garage","version":"1.0","type":"link"}