{"product_id":"ottoflux-silver-brazing-paste-flux","title":"Ottoflux Paste Flux","description":"\u003cp\u003eOttoFlux Paste Flux is a creamy white silver brazing flux designed to promote clean, reliable solder joints while protecting metal surfaces during heating. Active up to 1600°F (870°C), it supports strong wetting and bonding across a wide range of metals commonly used in jewelry and metalworking. The smooth paste consistency spreads easily and remains stable without hardening or crystallizing when stored properly.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCreamy white silver brazing paste flux for jewelry and metalworking\u003c\/li\u003e\n\u003cli\u003eActive and protective up to 1600°F (870°C)\u003c\/li\u003e\n\u003cli\u003eSuitable for gold, silver, platinum, copper, copper alloys, ferrous metals, nickel, and carbides\u003c\/li\u003e\n\u003cli\u003eContains no potassium bifluoride for reduced skin irritation\u003c\/li\u003e\n\u003cli\u003ePaste consistency may be used as supplied or diluted with water\u003c\/li\u003e\n\u003cli\u003eFlux and residue are soluble in hot water for easy cleanup\u003c\/li\u003e\n\u003cli\u003eTwo-year shelf life when stored properly\u003c\/li\u003e\n\u003cli\u003eAlso known as Superior No. 6 Paste Flux\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFlux Type\u003c\/th\u003e\n\u003ctd\u003eSilver Brazing Paste Flux\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Working Temperature\u003c\/th\u003e\n\u003ctd\u003e1600°F (870°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConsistency\u003c\/th\u003e\n\u003ctd\u003ePaste\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActive Ingredient\u003c\/th\u003e\n\u003ctd\u003ePotassium Fluoborate (CAS 14075-53-7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShelf Life\u003c\/th\u003e\n\u003ctd\u003e2 Years (Properly Stored)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eOtto Frei\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAvailable Options\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e154.440\u003c\/td\u003e\n\u003ctd\u003e1.5 oz (43 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e154.442\u003c\/td\u003e\n\u003ctd\u003e8 oz (227 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e154.444\u003c\/td\u003e\n\u003ctd\u003e16 oz (454 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e154.446\u003c\/td\u003e\n\u003ctd\u003e5 lb (2.27 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eOttoFlux may be used directly from the container or diluted with water to achieve a thinner consistency. Warming the flux to approximately 140–180°F (60–82°C) reduces viscosity and increases activity. Always apply flux to clean metal surfaces before heating and soldering. Residues can be removed with hot water (at least 140°F\/60°C).\u003c\/p\u003e\n\u003cp\u003eAvoid contact with skin, eyes, or clothing. Use appropriate protective equipment, including safety goggles and gloves, and ensure adequate ventilation during brazing operations. Dispose of flux residues according to local and federal environmental guidelines.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"1-1\/2 oz.","offer_id":47551752667350,"sku":"154.440","price":8.25,"currency_code":"USD","in_stock":true},{"title":"8 oz.","offer_id":47551752700118,"sku":"154.442","price":13.5,"currency_code":"USD","in_stock":true},{"title":"16 oz.","offer_id":47551752732886,"sku":"154.444","price":20.95,"currency_code":"USD","in_stock":true},{"title":"5 lbs","offer_id":47551752765654,"sku":"154.446","price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/ottoflux-paste-flux-otto-frei.jpg?v=1719955141","url":"https:\/\/www.ottofrei.com\/products\/ottoflux-silver-brazing-paste-flux","provider":"Otto Frei","version":"1.0","type":"link"}