{"product_id":"value-collection-zmsch70246-o-ring-4-5in-id-nbr-dash-246","title":"Value Collection ZMSCH70246 O-ring 4.5in Id Nbr Dash 246","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70246 is a Dash 246 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer for sealing applications involving petroleum-based fluids. With a 4.5-inch inside diameter, 4.75-inch outside diameter, and 0.125-inch cross-section thickness, this ring seats into standard Dash 246 grooves. The round cross-section profile provides consistent radial compression, delivering reliable sealing across a broad temperature range from -40 degrees F to 250 degrees F. Rated at 70 durometer hardness, it resists compression set, tearing, and abrasion under normal service conditions. Each package contains 25 pieces, meeting SAE and MIL-Spec standards.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for hydraulic systems, pneumatic assemblies, fuel systems, plumbing connections, and general-purpose sealing applications where petroleum product compatibility is required. It performs in both static and dynamic sealing configurations. HVAC technicians, plumbers, and industrial maintenance professionals commonly use Dash 246 O-rings during pump rebuilds, valve servicing, and manifold assembly. The Buna-N compound is appropriate for mineral-based oils, diesel, and gasoline service. It is not recommended for applications involving ozone, strong oxidizing agents, ketones, or esters.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile) material with excellent resistance to petroleum products and fuels\u003c\/li\u003e\n  \u003cli\u003eDash 246 standard sizing: 4.5 inches ID, 4.75 inches OD, 0.125 inches thick\u003c\/li\u003e\n  \u003cli\u003e70 durometer hardness rating for firm sealing with good compression set resistance\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range: -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eRound cross-section profile for consistent groove fit and radial seal\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards; sold in a 25-piece package\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement for standard Dash 246 O-ring applications compatible with petroleum products, mineral-based hydraulic fluids, and fuels in static and dynamic sealing assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed HVAC technicians, plumbers, or qualified maintenance personnel. Always depressurize and isolate the system before removing the old O-ring. Lightly lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to prevent pinching or tearing during assembly. Do not store O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as ozone exposure degrades Buna-N rubber over time.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Nitrile Butadiene Rubber (Buna-N)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 246\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 4.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 4.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches\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: 70 durometer (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 Media\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: 25 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 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: ZMSCH70246\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699634733362,"sku":"ZMSCH70246","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bcc6c694955bffc6bf3165ff320f36ff.jpg?v=1788378514","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70246-o-ring-4-5in-id-nbr-dash-246","provider":"Voomi Supply","version":"1.0","type":"link"}