{"product_id":"loctite-577","title":"Loctite 577","description":"\u003cp\u003eLoctite 577 is a high-performance, general-purpose thread sealant developed for sealing and locking metal pipe threads and fittings. It is designed to provide an instant, low-pressure seal, making it ideal for fast assembly work where reliability and efficiency are essential.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eSuitable for both active and passive metals, it delivers consistent performance across a wide range of threaded connections without the need for additional activators in most applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cp\u003e• Medium-strength thread sealing and locking compound \u003cbr\u003e• Suitable for all metal threaded pipe systems \u003cbr\u003e• Provides instant low-pressure sealing capability \u003cbr\u003e• Resistant to vibration, shock and thermal cycling \u003cbr\u003e• Excellent chemical and thermal resistance \u003cbr\u003e• Easy application with controlled flow properties \u003cbr\u003e• Cures on both active and inactive metals\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eProduct Description\u003c\/h4\u003e\n\u003cp\u003eLoctite 577 is a premium anaerobic thread sealant designed for the locking and sealing of metal pipes, fittings and other threaded assemblies. Once applied between mating threads, it fills the microscopic gaps to form a durable seal while also preventing loosening caused by vibration or mechanical stress.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eThe formulation provides an instant low-pressure seal, allowing systems to be tested shortly after assembly, improving installation efficiency on site. It is engineered to resist creep, shrinkage and shredding, ensuring long-term joint integrity even under demanding operating conditions.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eRecent formulation improvements have enhanced performance, delivering higher strength on contaminated surfaces, improved thermal resistance, and reliable curing on passive metals without the need for an activator. This makes it particularly effective in mixed-material installations and less-than-ideal site conditions.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eLoctite 577 also offers excellent chemical resistance, making it suitable for use in a wide range of industrial, plumbing and mechanical systems where exposure to fluids, gases or temperature variation is expected. It is widely used across M\u0026amp;E, plumbing and process industries for sealing threaded pipe connections efficiently and reliably.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eApprovals\u003c\/h4\u003e\n\u003cp\u003eNSF P1 Reg. No. 123001 \u003cbr\u003eDVGW Approval (EN 751-1): NG-5146CQ0312\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eApplications\u003c\/h4\u003e\n\u003cp\u003eIdeal for sealing and locking metal pipe threads and fittings in plumbing, heating, gas, compressed air and industrial pipework systems where a durable, vibration-resistant and leak-free connection is required.\u003c\/p\u003e","brand":"Fire-Mech Fixings","offers":[{"title":"250ml","offer_id":54024467743053,"sku":"LOCK577","price":63.0,"currency_code":"GBP","in_stock":true},{"title":"50ml","offer_id":54024467775821,"sku":"LOCK57750ML","price":46.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/9925\/1021\/files\/loctite-577_LOCK577.jpg?v=1780480245","url":"https:\/\/fire-mechfixings.co.uk\/products\/loctite-577","provider":"Fire Mech Fixings","version":"1.0","type":"link"}