{"product_id":"schaefer-brush-43553-double-stem-spiral-tube-brush","title":"Schaefer Brush 43553 Double Stem Spiral Tube Brush","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCHAEFER BRUSH 43553 is a double stem, double\/single spiral tube brush designed for cleaning the interior of tubes, pipes, and bores in industrial and mechanical service applications. Built with stainless steel bristles and a stainless steel brush body, it delivers firm, corrosion-resistant scrubbing action suited for demanding environments. The brush measures 2-3\/4 inches in diameter with an overall length of 7-1\/4 inches and a brush length of 4-1\/2 inches. The 1\/4-inch male NPSM connection threads directly onto compatible extension rods or handles, making it easy to deploy in confined or deep passages. HVAC technicians, plumbers, and maintenance professionals reach for this tool when clearing scale, debris, or fouling from heat exchangers, coils, and piping.\u003c\/p\u003e\n\u003cp\u003eThis tube brush is a practical choice for residential and commercial service work wherever internal bore cleaning is required. Common applications include heat exchanger tube cleaning, condenser tube maintenance, boiler tube service, and general pipe bore preparation. The double stem construction provides added rigidity compared to single-stem designs, reducing flex and improving scrubbing consistency through longer or tighter tube runs. The stainless steel bristle material holds up against moisture, mild chemicals, and repeated use without shedding or corroding.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e2-3\/4 inch brush diameter for cleaning standard tube and pipe bores\u003c\/li\u003e\n  \u003cli\u003e4-1\/2 inch brush length provides thorough contact along tube walls\u003c\/li\u003e\n  \u003cli\u003eDouble stem construction adds rigidity and reduces flex during use\u003c\/li\u003e\n  \u003cli\u003eStainless steel bristles resist corrosion and withstand repeated cleaning cycles\u003c\/li\u003e\n  \u003cli\u003e1\/4 inch male NPSM connection for compatibility with standard extension handles and rods\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.48 pounds for easy single-hand operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 1\/4-inch NPSM female-threaded extension rods and tube brush handles. Suitable for cleaning tubes and bores with an internal diameter sized for a 2-3\/4 inch brush.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eAlways de-energize and lock out electrical equipment and shut off fluid flow before inserting a tube brush into any active system. Thread the 1\/4-inch male NPSM connection securely onto the extension rod before use to prevent separation inside the tube. Use appropriate personal protective equipment when working with scale, chemical residue, or fouled heat transfer surfaces. This tool is typically used by HVAC technicians, plumbers, and industrial maintenance personnel as part of routine service and cleaning procedures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Diameter\u003c\/strong\u003e: 2-3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Length\u003c\/strong\u003e: 4-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: NPSM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Size\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Gender\u003c\/strong\u003e: Male\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBristle Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.48 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SCHAEFER BRUSH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 43553\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHAEFER BRUSH","offers":[{"title":"Default Title","offer_id":51540297842994,"sku":"43553","price":29.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a72381365ea1ddfd53b15ccc2ef98d1c.jpg?v=1785851444","url":"https:\/\/voomisupply.com\/products\/schaefer-brush-43553-double-stem-spiral-tube-brush","provider":"Voomi Supply","version":"1.0","type":"link"}