{"product_id":"value-collection-zmsch90263-nbr-o-ring-dash-263","title":"Value Collection ZMSCH90263 Nbr O-ring Dash 263","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH90263 is a Dash 263 O-ring made from Nitrile Butadiene Rubber (Buna-N), designed for static and dynamic sealing applications across industrial, plumbing, and fluid-handling systems. It measures 7.25 inches inside diameter and 7.5 inches outside diameter, with a cross-section thickness of 0.125 inches. The compound is rated at 90 durometer, placing it in the extra-hard hardness range. The operating temperature window runs from -40 degrees F to 250 degrees F. Buna-N is the most widely used O-ring elastomer in the trade, valued for its strong resistance to petroleum-based fluids, good compression set performance, and solid tear and abrasion resistance.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for use in hydraulic systems, pneumatic assemblies, pumps, pipe flanges, valves, and general fluid-sealing applications where petroleum products are present. Its large diameter makes it appropriate for shaft seals, large-bore fittings, and tank or housing cover seals in both residential and commercial installations. Plumbers, pipefitters, industrial maintenance techs, and HVAC mechanics working on oil-bearing systems will encounter this size in equipment cover gaskets and pump seal assemblies. Each package contains 10 O-rings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) material with excellent resistance to petroleum products and hydraulic fluids\u003c\/li\u003e\n  \u003cli\u003eExtra-hard 90 durometer rating provides high resistance to extrusion under pressure\u003c\/li\u003e\n  \u003cli\u003eWide temperature range from -40 degrees F to 250 degrees F suits demanding thermal cycles\u003c\/li\u003e\n  \u003cli\u003eRound cross-section profile conforms to standard Dash 263 O-ring groove dimensions\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards for material and dimensional compliance\u003c\/li\u003e\n  \u003cli\u003ePackaged in quantities of 10 per pack with a minimum order quantity of 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum products and petroleum-based fluids. Should not be used in contact with ozone, direct sunlight exposure during storage, or near motors and electrical equipment that generate ozone. Designed as a standard Dash 263 replacement O-ring for any application requiring a 7.25-inch inside diameter Buna-N seal.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eO-ring installation should be performed by qualified plumbers, pipefitters, or industrial mechanics following applicable system shutdown and pressure-relief procedures before disassembly. Inspect the groove for nicks, burrs, or contamination before seating the O-ring. Apply a compatible lubricant to ease installation and prevent rolling or twisting during assembly. Do not overstretch the O-ring during installation, as permanent deformation will compromise the seal.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Buna-N (Nitrile Butadiene Rubber)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 263\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 7.25 inches (183.74 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 7.5 inches (190.50 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches (3.53 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 90 durometer (Extra Hard)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Working Temperature\u003c\/strong\u003e: -40 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature\u003c\/strong\u003e: 250 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Fluids\u003c\/strong\u003e: Petroleum Products\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: SAE, MIL-Spec\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFDA Approved\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.74 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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: ZMSCH90263\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51714352611634,"sku":"ZMSCH90263","price":18.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_14846a9e-51b4-4f2f-8a5c-844d4165a3bb.jpg?v=1788500057","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90263-nbr-o-ring-dash-263","provider":"Voomi Supply","version":"1.0","type":"link"}