{"product_id":"schaefer-brush-43338-spiral-tube-brush-4-in-7-5-in-oal","title":"Schaefer Brush 43338 Spiral Tube Brush 4 in 7.5 in Oal","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SCHAEFER BRUSH 43338 is a double stem spiral tube brush designed for cleaning the interior surfaces of tubes, pipes, and cylindrical passages. Built with a tempered steel wire bristle construction, it delivers durable scrubbing action suited for removing scale, debris, and fouling from metal tubing. The brush measures 4 inches in diameter with a brush length of 4.5 inches and an overall length of 7.5 inches. A 0.25 inch male NPT connection allows direct threading onto standard rod extensions or cleaning equipment handles. This brush is commonly installed by HVAC technicians, plumbers, and mechanical service professionals who perform routine tube and pipe maintenance.\u003c\/p\u003e\u003cp\u003eThe 43338 is well suited for tube cleaning applications in HVAC systems, boilers, heat exchangers, condensers, and plumbing assemblies where internal passage fouling is a service concern. The spiral double stem design provides even bristle contact around the full interior circumference of the target tube during push-pull strokes. The 0.25 inch NPT male thread makes it compatible with standard rod and extension setups used in commercial and light industrial service environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTempered steel wire bristles for durable mechanical cleaning action\u003c\/li\u003e\n\u003cli\u003eDouble stem spiral design ensures consistent contact with tube interior walls\u003c\/li\u003e\n\u003cli\u003e4 inch brush diameter suited for matching tube and pipe bore sizes\u003c\/li\u003e\n\u003cli\u003e4.5 inch brush length for effective reach into tube passages\u003c\/li\u003e\n\u003cli\u003e0.25 inch male NPT connection threads onto standard cleaning rod extensions\u003c\/li\u003e\n\u003cli\u003eOverall length of 7.5 inches for manageable handling in confined spaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and service tool for tube and pipe cleaning applications in residential and commercial HVAC, plumbing, and mechanical systems requiring a 4 inch diameter spiral tube brush with a 0.25 inch male NPT connection.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis brush is installed by HVAC technicians, plumbers, and mechanical service professionals. Before cleaning any tube or pipe assembly, shut off fluid flow, depressurize the system, and allow components to cool to a safe handling temperature. Thread the brush onto a compatible cleaning rod extension by hand before applying rotational or push-pull force. Inspect bristle condition before each use and replace the brush if wires are bent, broken, or excessively worn.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrush Diameter\u003c\/strong\u003e: 4 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: 7.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: NPT\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\u003eBristle Material\u003c\/strong\u003e: Tempered Steel Wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.56 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: 43338\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHAEFER BRUSH","offers":[{"title":"Default Title","offer_id":51541700411698,"sku":"43338","price":28.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6412454bbb74d3f69c073a6c7b18c98e.jpg?v=1785882539","url":"https:\/\/voomisupply.com\/products\/schaefer-brush-43338-spiral-tube-brush-4-in-7-5-in-oal","provider":"Voomi Supply","version":"1.0","type":"link"}