{"product_id":"midland-industries-968ssi4cts-3-4-in-cts-flanged-insert-stiffener","title":"Midland Industries 968SSI4CTS 3\/4 in Cts Flanged Insert Stiffener","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MIDLAND INDUSTRIES 968SSI4CTS is a flanged insert stiffener designed to reinforce soft tubing connections in plumbing systems. Constructed from 304 stainless steel, this insert slides inside CTS (Copper Tube Size) tubing to prevent collapse or deformation when a compression or push-fit fitting is tightened around it. The flanged end seats against the tube face, keeping the insert properly positioned during installation. Sized for 3\/4-inch CTS tube, it measures 41.5 mm (approximately 1.63 inches) in length with a tube OD of 16.5 mm (approximately 0.65 inches) and a flange diameter of 19.8 mm (approximately 0.78 inches). Licensed plumbers and pipefitters install this component when working with PEX, polyethylene, or other flexible tubing that requires internal support at the fitting interface.\u003c\/p\u003e\n\u003cp\u003eThis stiffener is used in residential and light commercial plumbing applications wherever 3\/4-inch CTS flexible tubing connects to compression-style or crimp fittings. It is a standard component in PEX water supply systems, radiant heating distribution lines, and potable water service runs where tubing integrity at the connection point is essential. The 304 stainless steel construction makes it suitable for both hot and cold water service environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e304 stainless steel construction resists corrosion in wet plumbing environments\u003c\/li\u003e\n  \u003cli\u003eFlanged end prevents the insert from being pushed through the tube during fitting assembly\u003c\/li\u003e\n  \u003cli\u003eSized for 3\/4-inch CTS tube for a consistent, snug fit inside flexible tubing\u003c\/li\u003e\n  \u003cli\u003eCompact 41.5 mm length fits within standard compression and crimp fitting engagement zones\u003c\/li\u003e\n  \u003cli\u003eLow profile flange diameter of 19.8 mm seats cleanly against tube end face\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation component for 3\/4-inch CTS flexible tubing systems, including PEX and polyethylene supply lines used with compression or crimp-style plumbing fittings.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInsert stiffeners are installed by licensed plumbers working on flexible tubing systems. Shut off the water supply and relieve system pressure before disassembling any fitting. Insert the stiffener fully into the tube end until the flange seats flush against the cut edge before applying the fitting. Ensure the tube is cut cleanly and squarely with a proper tube cutter to allow full seating of the flange and consistent compression around the fitting body.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Size\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube Connection Type\u003c\/strong\u003e: CTS (Copper Tube Size)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: 304 Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 41.5 mm (approximately 1.63 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube OD\u003c\/strong\u003e: 16.5 mm (approximately 0.65 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlange Diameter\u003c\/strong\u003e: 19.8 mm (approximately 0.78 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.025 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 0.65 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.65 inches\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: MIDLAND INDUSTRIES\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 968SSI4CTS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MIDLAND INDUSTRIES","offers":[{"title":"Default Title","offer_id":67950355480882,"sku":"968SSI4CTS","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a4362139d82a15e6af30c33ee8a5cbd7_74c2584e-6b58-4a05-99b9-ba0deced1d8b.jpg?v=1791714819","url":"https:\/\/voomisupply.com\/products\/midland-industries-968ssi4cts-3-4-in-cts-flanged-insert-stiffener","provider":"Voomi Supply","version":"1.0","type":"link"}