{"product_id":"loctite-243-medium-strength-threadlocker-oil-tolerant-removable-sets-in-10-min","title":"Loctite 243 Medium-Strength Threadlocker (Oil-Tolerant) — Removable, Sets in 10 min","description":"\u003cp\u003e\u003cstrong\u003eLoctite 243 is a medium-strength, oil-tolerant anaerobic threadlocker that secures metal fasteners against vibration while still allowing disassembly with hand tools.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for automotive and general-purpose metal assemblies, Loctite 243 (formerly \"Blue\") bonds to stainless steel, aluminum, and plated surfaces even when light oil contamination is present. It cures anaerobically between metal parts, sets in about 10 minutes, and reaches full strength in 24 hours. Rated for fasteners from 6 mm to 20 mm (1\/4\"–3\/4\"), this threadlocker resists shock and chemical exposure while providing a stable joint up to roughly 140°F (60°C).\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly does Loctite 243 set and reach full strength?\u003c\/h3\u003e\n\n\u003cp\u003eLoctite 243 begins to set within approximately 10 minutes after application, allowing you to handle assemblies sooner. Full cure and maximum strength typically develop within 24 hours under normal conditions.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eInitial handling time: ~10 minutes\u003c\/li\u003e\n  \u003cli\u003eFull cure: ~24 hours\u003c\/li\u003e\n  \u003cli\u003eCure depends on metal contact and absence of oxygen in the bond gap\u003c\/li\u003e\n  \u003cli\u003eAmbient temperature influences cure speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich fasteners and environments is this threadlocker suitable for?\u003c\/h3\u003e\n\n\u003cp\u003eLoctite 243 is formulated for general automotive and industrial fasteners from 1\/4\" to 3\/4\" (6–20 mm). It performs well in assemblies exposed to vibration, thermal cycling, and common automotive fluids.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRecommended bolt range: 6 mm–20 mm (1\/4\"–3\/4\")\u003c\/li\u003e\n  \u003cli\u003eUses: rocker studs, oil pans, alternators, calipers, pulleys\u003c\/li\u003e\n  \u003cli\u003eResistant to light oils and common automotive chemicals\u003c\/li\u003e\n  \u003cli\u003eRemovable with standard hand tools when needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat metals and surface conditions will it bond to effectively?\u003c\/h3\u003e\n\n\u003cp\u003eThis anaerobic formula bonds reliably to a wide variety of metals, including stainless steel, aluminum and plated surfaces. Its improved oil tolerance lets it cure where traces of oil remain, though clean, degreased surfaces provide the best long-term performance.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with stainless steel, steel, aluminum, and plated parts\u003c\/li\u003e\n  \u003cli\u003eDesigned for somewhat oily surfaces but better on cleaned parts\u003c\/li\u003e\n  \u003cli\u003eForms a strong bond in the absence of air between mating metal surfaces\u003c\/li\u003e\n  \u003cli\u003eIdeal for assemblies subject to vibration and shock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is Loctite 243 removed or serviced if disassembly is required?\u003c\/h3\u003e\n\n\u003cp\u003eLoctite 243 is a medium-strength threadlocker intended to prevent loosening while allowing disassembly with common hand tools. For stubborn joints, heat or mechanical force can assist removal, and specific Loctite removers are available for tougher applications.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDesigned to be removable with standard hand tools\u003c\/li\u003e\n  \u003cli\u003eApplying controlled heat can reduce strength for disassembly\u003c\/li\u003e\n  \u003cli\u003eLoctite solvent removers can aid in difficult cases\u003c\/li\u003e\n  \u003cli\u003eMechanical impact or torque may be necessary on older cures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Loctite 243 is aimed at automotive technicians, home mechanics, and industrial maintenance crews who need a reliable, medium-strength threadlocker that tolerates light oil contamination. It suits anyone fastening bolts and nuts in engines, drivetrains, housings, and assemblies where vibration or chemical exposure can cause loosening but future disassembly may still be required.\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 Loctite 243 be used on oily threads?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it has enhanced oil tolerance and will cure on lightly contaminated threads, though cleaning improves long-term performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Loctite 243 removable once cured?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it is medium strength and can be separated with standard hand tools; heat or solvent can help for stubborn joints.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Loctite","offers":[{"title":"Default Title","offer_id":55168260178263,"sku":"B005M1RI84","price":41.07,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/loctite-243-front-label_645e3a5f-2f84-437a-ba0a-d07b6aa93e08.jpg?v=1790396918","url":"https:\/\/britishgarage.co.uk\/products\/loctite-243-medium-strength-threadlocker-oil-tolerant-removable-sets-in-10-min","provider":"British Garage","version":"1.0","type":"link"}