{"product_id":"loctite-threadlocker-243-blue-medium-strength-250-ml-bottle-oil-tolerant-removable-with-hand-tools","title":"Loctite threadlocker 243 Blue Medium-Strength 250 mL Bottle — oil-tolerant, removable with hand tools","description":"\u003cp\u003e\u003cstrong\u003eLoctite 243 is a blue, medium-strength threadlocker in a 250 ml bottle designed to lock and seal threaded fasteners while tolerating light oil contamination.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEngineered for general-purpose industrial and maintenance use, this threadlocker balances secure holding with the ability to remove fasteners with normal hand tools. Its formulation tolerates typical surface oils and does not require perfect cleaning before application, making it suitable where quick maintenance or on-the-spot repairs are common. This product cures anaerobically when confined between metal parts and helps prevent loosening caused by vibration and thermal cycling.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Loctite 243 perform on lightly oily or as-received fasteners?\u003c\/h3\u003e\n\u003cp\u003eThe 243 formula includes improved oil tolerance so it can cure effectively on fasteners that haven't been fully degreased. While full cleaning yields the strongest bond, this product was developed to work reliably on standard factory-finished or slightly contaminated parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOil-tolerant curing on as-received fasteners without cleaning\u003c\/li\u003e\n  \u003cli\u003eDesigned for metal-to-metal threaded assemblies\u003c\/li\u003e\n  \u003cli\u003eMedium strength allows later removal with hand tools\u003c\/li\u003e\n  \u003cli\u003eReduces need for immediate degreasing in maintenance settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat strength and temperature limits should I expect from this threadlocker?\u003c\/h3\u003e\n\u003cp\u003eLoctite 243 is categorized as medium-strength, offering secure locking while still permitting disassembly using standard tools. It withstands a broad range of operating temperatures but manufacturers specify the maximum temperature for temporary resistance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMedium-strength formula for balanced locking and removability\u003c\/li\u003e\n  \u003cli\u003eRated up to 360 degrees Fahrenheit (maximum temperature tolerance)\u003c\/li\u003e\n  \u003cli\u003eSuitable for assemblies exposed to vibration and moderate heat\u003c\/li\u003e\n  \u003cli\u003eNot intended for permanent, high-torque, or extreme-temperature joints\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I apply and store the 250 ml Loctite 243 bottle?\u003c\/h3\u003e\n\u003cp\u003eApply a drop or two to the male threads where it will be confined between the screw and mating part; avoid excess that could squeeze out. Store the bottle capped in a cool, dry place to preserve shelf life and prevent premature curing from exposure to air or metal contamination.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply sparingly to male threads for best cure and economy\u003c\/li\u003e\n  \u003cli\u003eAssembled joint cures anaerobically (in absence of air) between metal parts\u003c\/li\u003e\n  \u003cli\u003eKeep bottle tightly closed and store at recommended temperatures\u003c\/li\u003e\n  \u003cli\u003e250 ml size suits workshops, maintenance departments, and repeated use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Loctite 243 in a 250 ml bottle is aimed at mechanics, maintenance technicians, fabricators, and hobbyists who need a dependable medium-strength threadlocker that handles routine surface oils. It’s well suited for general industrial applications, automotive repairs, and equipment maintenance where the combination of oil tolerance, reliable locking, and removability matters. If you need a permanent, high-temperature or structural adhesive, consider alternative Loctite grades designed for those extreme requirements.\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 removed later with hand tools?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. As a medium-strength threadlocker, Loctite 243 allows disassembly with standard hand tools under normal conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to degrease parts before applying Loctite 243?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Not always. Loctite 243 has improved oil tolerance and can cure on lightly oily or as-received fasteners, though cleaning improves ultimate strength.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Loctite","offers":[{"title":"Default Title","offer_id":48082944360606,"sku":"B004VODM8I","price":63.28,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/loctite-243-bottle-front.jpg?v=1785819830","url":"https:\/\/northtrailauto.ca\/products\/loctite-threadlocker-243-blue-medium-strength-250-ml-bottle-oil-tolerant-removable-with-hand-tools","provider":"North Trail Auto","version":"1.0","type":"link"}