{"product_id":"fernco-66u-401-donut-coupling-6x4-in-ci-hub-sdr-35-pvc","title":"Fernco 66u-401 Donut Coupling 6x4 in Ci Hub Sdr 35 Pvc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe FERNCO 66u-401 is a flexible donut-style service coupling designed to connect a 6-inch cast iron hub to a 4-inch SDR 35 PVC pipe. This fitting bridges two common pipe materials and sizes at transition points in drainage systems, making it a practical solution where cast iron and PVC meet. The flexible elastomeric construction compensates for minor misalignment and provides a watertight seal without hot-lead caulking or special tools. At 2.86 pounds, it is compact enough for tight access areas. Licensed plumbers and drain contractors install this fitting during repair, rehabilitation, or new rough-in work on sanitary drain, waste, and vent systems.\u003c\/p\u003e\n\u003cp\u003eThe 66u-401 is suited for residential and light commercial plumbing applications where a cast iron hub transition to SDR 35 PVC piping is required. Typical scenarios include sewer lateral repairs, stack base transitions, and tie-ins where existing cast iron infrastructure meets newer PVC drain lines. The donut profile seats inside the cast iron hub bell, allowing the PVC pipe to pass through and seal without cutting into the existing hub.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eConnects 6-inch cast iron hub to 4-inch SDR 35 PVC pipe in a single fitting\u003c\/li\u003e\n  \u003cli\u003eFlexible elastomeric donut construction compensates for minor pipe misalignment\u003c\/li\u003e\n  \u003cli\u003eNo hot-lead caulking, flame, or specialized joining equipment required\u003c\/li\u003e\n  \u003cli\u003eLightweight at 2.86 pounds for easier handling in confined spaces\u003c\/li\u003e\n  \u003cli\u003eWatertight seal suitable for sanitary drain, waste, and vent applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style flexible transition fitting for 6-inch cast iron hub connections to 4-inch SDR 35 PVC pipe in sanitary drainage systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a licensed plumber. Shut off flow and isolate the line segment before beginning work. The donut coupling seats into the cast iron hub bell; ensure the hub interior is clean and free of debris or sharp edges before seating the fitting. Follow local plumbing codes, including applicable IPC or local jurisdictional requirements, for approved transition methods on sanitary drain systems.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Size\u003c\/strong\u003e: 6 inches x 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eItem Weight\u003c\/strong\u003e: 2.86 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Cast Iron Hub x SDR 35 PVC\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: FERNCO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 66u-401\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FERNCO","offers":[{"title":"Default Title","offer_id":51233850949938,"sku":"66U-401","price":37.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307628841.jpg?v=1780110210","url":"https:\/\/voomisupply.com\/products\/fernco-66u-401-donut-coupling-6x4-in-ci-hub-sdr-35-pvc","provider":"Voomi Supply","version":"1.0","type":"link"}