{"product_id":"value-collection-zmsch90431-o-ring-dash-431-nitrile-90d","title":"Value Collection ZMSCH90431 O-ring Dash 431 Nitrile 90D","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH90431 is a Dash 431 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 5.25 inches inside diameter by 5.75 inches outside diameter with a 0.25-inch cross-section thickness and a 90 durometer hardness rating, placing it in the extra-hard classification. The round cross-section profile seats into standard Dash 431 O-ring grooves. Plumbers, pipefitters, HVAC technicians, and maintenance professionals use this O-ring wherever a large-diameter, petroleum-resistant static or dynamic seal is required. It is sold in a package quantity of 10.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for applications involving petroleum-based fluids, hydraulic oils, fuels, and common industrial lubricants. Its temperature rating of -40 to 250 degrees F makes it appropriate for both refrigerated environments and moderate-heat service. Typical installations include large-bore pipe flanges, pump housings, valve bodies, and equipment access covers in commercial HVAC, plumbing, and industrial fluid-handling systems. The extra-hard 90 durometer compound resists extrusion under higher pressure conditions compared to standard 70-durometer Buna-N rings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) compound offers excellent resistance to petroleum products and hydraulic fluids\u003c\/li\u003e\n  \u003cli\u003e90 durometer extra-hard rating provides strong extrusion resistance in pressurized applications\u003c\/li\u003e\n  \u003cli\u003eOperating range of -40 to 250 degrees F covers a wide range of service environments\u003c\/li\u003e\n  \u003cli\u003eExcellent compression set, tear resistance, and abrasion resistance for long service life\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003eRound cross-section conforms to standard Dash 431 O-ring groove dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard Dash 431 O-ring replacement compatible with petroleum products and equipment calling for Buna-N seals. Should not be used with ozone-generating environments, direct sunlight exposure, or near motors and electrical equipment that produce ozone. Not FDA approved for food-contact applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by plumbers, pipefitters, or HVAC technicians following applicable IPC or system manufacturer guidelines. Depressurize and drain the system completely before removing the old O-ring or installing the replacement. Inspect the groove for nicks, burrs, or contamination before seating the new O-ring. A compatible petroleum-based or system-approved lubricant may be used to ease installation and reduce the risk of tearing during assembly.\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: 431\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 5.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness (Cross Section)\u003c\/strong\u003e: 0.25 inches (6.99 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 90 Durometer (Extra Hard)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Round\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: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.22 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: ZMSCH90431\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51692760990002,"sku":"ZMSCH90431","price":21.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a98176a9bd1a446b6fb9b3ea8f7f166b.jpg?v=1788302437","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90431-o-ring-dash-431-nitrile-90d","provider":"Voomi Supply","version":"1.0","type":"link"}