{"product_id":"mastercool-90935-alum-bond-aluminum-repair-compound-high-strength-machinable-epoxy-for-castings-radiators-engine-components","title":"Mastercool 90935 Alum Bond Aluminum Repair Compound – High-Strength, Machinable Epoxy for Castings, Radiators \u0026 Engine Components","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMeet Mastercool 90935 Alum Bond, an aluminum-filled repair compound designed for permanent, high-strength fixes on aluminum components. This durable repair solution blends a rigid resin with aluminum filler to address casting imperfections, leaks, and surface flaws. Designed for radiators, engine blocks, housings, tanks, and HVAC parts, Alum Bond aims to help technicians restore functionality without immediate part replacement.\u003c\/p\u003e\n\u003ch2\u003eKey features and specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eALUMINUM-FILLED METAL REPAIR COMPOUND – Professional-grade aluminum-filled polymer designed to permanently repair cracks, blow holes, and casting imperfections in aluminum components including radiators, engine blocks, housings, tanks, and HVAC parts.\u003c\/li\u003e\n\u003cli\u003eHIGH-STRENGTH INDUSTRIAL PERFORMANCE – Engineered for demanding repairs with approximately 8,600 PSI compressive strength and 3,500 PSI tensile strength, creating a durable repair capable of restoring damaged aluminum surfaces.\u003c\/li\u003e\n\u003cli\u003eMACHINABLE AFTER CURING – Once fully cured, the repair compound can be drilled, sanded, tapped, or machined using standard metalworking tools, allowing technicians to restore functionality without replacing expensive components.\u003c\/li\u003e\n\u003cli\u003eNON-SAG FORMULA FOR VERTICAL APPLICATIONS – Thick paste consistency allows Alum Bond to stay in place during application, making it ideal for filling cavities, blow holes, porosity, and irregular surfaces on vertical or overhead repairs.\u003c\/li\u003e\n\u003cli\u003eHIGH TEMPERATURE RESISTANCE – Designed for automotive, HVAC, and industrial environments with temperature resistance up to 250°F (121°C) after full cure.\u003c\/li\u003e\n\u003cli\u003eCONTROLLED WORKING TIME FOR PRECISE REPAIRS – Provides a practical working window depending on temperature conditions, allowing technicians time to properly apply and shape repairs before curing.\u003c\/li\u003e\n\u003cli\u003eIDEAL FOR CASTING DEFECT AND SURFACE REPAIRS – Specifically designed for repairing aluminum castings, radiators, tanks, valves, pumps, engine blocks, and HVAC components where surface defects or porosity require permanent repair.\u003c\/li\u003e\n\u003cli\u003eTRUSTED MASTERCOOL PROFESSIONAL QUALITY – Mastercool products are designed for professional technicians and supported by a trusted U.S.-based company known for reliable automotive and HVAC service tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReal-world scenarios\u003c\/h2\u003e\n\u003cp\u003eIn a repair shop, technicians may address porosity on an aluminum radiator tank or fill a crack in an engine block casting. The non-sag formula helps the repair stay in place during vertical or overhead applications, while the machinable capability enables precise finishing after curing.\u003c\/p\u003e\n\u003cp\u003eFor HVAC components, Alum Bond can seal minor porosity and surface defects, offering a serviceable option before a full replacement, depending on part condition and operating demands. The 250°F cure temperature provides a practical buffer in typical automotive and industrial environments.\u003c\/p\u003e\n\u003ch2\u003eShopping considerations\u003c\/h2\u003e\n\u003cp\u003eThink of Alum Bond as a repair option that emphasizes staying in place, strengthening damaged areas, and delivering a machinable finish. It is presented as a professional-grade solution to support permanent-looking repairs without immediate component replacement. Outcomes depend on surface prep, fit, and operating conditions.\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 surfaces can Mastercool Alum Bond repair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It is designed for aluminum castings, radiators, tanks, engine blocks, housings, and HVAC components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can Alum Bond be machined after it cures?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it cures to a machinable, non-sag solid that can be drilled, tapped, or milled with standard metalworking tools.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":42466667495509,"sku":"B00CDDA1OW","price":34.41,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/mastercool-alum-bond-aluminum-repair-paste-application.jpg?v=1778050578","url":"https:\/\/plentytorque.co.uk\/products\/mastercool-90935-alum-bond-aluminum-repair-compound-high-strength-machinable-epoxy-for-castings-radiators-engine-components","provider":"PlentyTorque","version":"1.0","type":"link"}