{"product_id":"schaefer-brush-43853-spiral-tube-brush-2-3-4-in-stainless","title":"Schaefer Brush 43853 Spiral Tube Brush 2-3\/4 in Stainless","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCHAEFER BRUSH 43853 is a double stem spiral tube brush built for cleaning the interior of pipes, tubes, and cylindrical passages in HVAC, plumbing, and industrial maintenance applications. The brush measures 2.75 inches in diameter with a 7.25-inch overall length and a 4.5-inch brush length, providing deep reach into tubing and conduit. Bristles and the core stem are both constructed from stainless steel, delivering corrosion resistance and durability in wet or chemically active environments. The 0.25-inch NPSM male connection allows direct threading onto standard extension rods or drill chucks, making it practical for both hand-operated and power-assisted cleaning work.\u003c\/p\u003e\n\u003cp\u003eThis tube brush is suited for residential and commercial service work where technicians need to clean tube interiors, remove scale, clear debris, or prep surfaces before reassembly. Typical applications include cleaning condenser tubes, heat exchanger tubes, drain lines, and small-bore pipe sections. The stainless steel construction makes it appropriate for use with water, mild solvents, and light chemical cleaners without concern for bristle degradation. HVAC technicians, plumbers, and maintenance professionals are the primary users of this tool in field and shop settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble stem spiral design holds bristles firmly and resists distortion under load\u003c\/li\u003e\n  \u003cli\u003e2.75-inch brush diameter for consistent contact inside standard tube sizes\u003c\/li\u003e\n  \u003cli\u003e4.5-inch brush length provides extended scrubbing surface per pass\u003c\/li\u003e\n  \u003cli\u003eStainless steel bristles resist corrosion and maintain stiffness in wet conditions\u003c\/li\u003e\n  \u003cli\u003e0.25-inch NPSM male connection threads onto standard extension rods or drill chucks\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.5 pounds, easy to carry in a tool bag or service kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard service tool for use with 0.25-inch NPSM-threaded extension rods and compatible brush handles used in tube and pipe cleaning applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis brush is installed by a qualified technician or maintenance professional by threading the 0.25-inch NPSM male fitting onto a compatible extension rod or handle. Ensure the system or equipment being serviced is fully depressurized, drained, and isolated before inserting the brush into any tube or pipe. When using with a power drill, operate at low speed to avoid bristle distortion or stem fatigue. Inspect the bristles and stem for wear or deformation before each use.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Double Stem Spiral Tube Brush\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Diameter\u003c\/strong\u003e: 2.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Length\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBristle Material\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrush Core Material\u003c\/strong\u003e: Stainless Steel\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: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Gender\u003c\/strong\u003e: Male\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: 43853\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHAEFER BRUSH","offers":[{"title":"Default Title","offer_id":51542255829298,"sku":"43853","price":37.19,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/442ce763f7f38e680a97e0e76d6b0fca.jpg?v=1785896548","url":"https:\/\/voomisupply.com\/products\/schaefer-brush-43853-spiral-tube-brush-2-3-4-in-stainless","provider":"Voomi Supply","version":"1.0","type":"link"}