{"product_id":"schaefer-brush-43758-spiral-tube-brush-3-25in-nylon","title":"Schaefer Brush 43758 Spiral Tube Brush 3.25in Nylon","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SCHAEFER BRUSH 43758 is a single stem spiral tube brush designed for cleaning the interior of tubes, pipes, and cylindrical passages. The brush measures 3.25 inches in diameter with an overall length of 7.25 inches and a brush scraper length of 5 inches. Nylon bristles provide effective scrubbing action while resisting moisture, mild chemicals, and corrosion. The 0.25 inch male NPSM connection makes it compatible with standard threaded extension rods and drill chucks, giving technicians a secure, repeatable attachment point during cleaning operations. This tool is commonly used by HVAC, plumbing, and industrial maintenance professionals who need consistent bore cleaning on a recurring service basis.\u003c\/p\u003e\u003cp\u003eThis tube brush is suited for residential and light commercial maintenance tasks including cleaning heat exchanger flues, condenser tubes, drain lines, and small-bore pipe interiors. The spiral stem construction distributes bristle contact evenly around the tube wall, helping to dislodge scale, debris, and buildup without damaging interior surfaces. The nylon bristle material is appropriate for use on metal and plastic tubing where wire bristles would be too aggressive.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3.25 inch brush diameter for consistent contact with tube walls\u003c\/li\u003e\n\u003cli\u003eNylon bristles resist moisture and mild chemical exposure\u003c\/li\u003e\n\u003cli\u003e0.25 inch male NPSM connection for use with standard extension rods or drill chucks\u003c\/li\u003e\n\u003cli\u003e5 inch brush scraper length provides thorough coverage per stroke\u003c\/li\u003e\n\u003cli\u003e7.25 inch overall length allows reach into standard-depth ports and passages\u003c\/li\u003e\n\u003cli\u003eSingle stem spiral construction for even bristle distribution\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and general-use tube brush for standard 0.25 inch NPSM threaded extension handles and rotary cleaning systems used in HVAC, plumbing, and industrial maintenance applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis brush is installed by a licensed HVAC technician or plumber as part of routine tube and bore cleaning procedures. Always shut off and lock out the system being serviced before inserting the brush into any tube or passage. Attach the NPSM male connection securely to a compatible extension rod or low-speed drill before use. Avoid forcing the brush into bores significantly smaller than the rated diameter, as this can damage bristles and reduce service life.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 3.25 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\u003eBrush Scraper Length\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBristle Material\u003c\/strong\u003e: Nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrush Material\u003c\/strong\u003e: Nylon\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: 0.34 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 43758\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHAEFER BRUSH","offers":[{"title":"Default Title","offer_id":51542155133234,"sku":"43758","price":23.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0a72d492ec8a03af8758fd723a674cbc_434dc2bf-f8c6-419f-a8c0-f652948192ea.jpg?v=1785893901","url":"https:\/\/voomisupply.com\/products\/schaefer-brush-43758-spiral-tube-brush-3-25in-nylon","provider":"Voomi Supply","version":"1.0","type":"link"}