{"product_id":"value-collection-zmsch90448-o-ring-dash-448-buna-n-90-duro-5-pack","title":"Value Collection ZMSCH90448 O-ring Dash 448 Buna-n 90 Duro 5-pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH90448 is a Dash 448 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid-sealing applications. This O-ring measures 9.5 inches inside diameter, 10 inches outside diameter, and 0.25 inches thick with a round cross section. It carries a 90 durometer hardness rating, classifying it as extra hard, which provides strong resistance to extrusion under pressure. The temperature range runs from -40 degrees F to 250 degrees F. Each package contains 5 O-rings. HVAC technicians, plumbers, and industrial mechanics install this size when servicing large-diameter flanged connections, pumps, and fluid-handling assemblies.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for stationary face-seal and radial-seal applications where petroleum-based fluids, hydraulic oils, and fuels are present. Its Buna-N compound delivers excellent resistance to petroleum products, strong compression set resistance, and solid tear and abrasion resistance. It is appropriate for both residential and commercial mechanical systems wherever a Dash 448 O-ring is specified. The part meets SAE and MIL-Spec standards. Store away from direct sunlight and away from motors or other equipment that generate ozone, as ozone exposure degrades nitrile rubber over time.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) compound — excellent resistance to petroleum products, hydraulic fluids, and fuels\u003c\/li\u003e\n  \u003cli\u003e90 durometer extra-hard rating reduces extrusion risk in high-pressure applications\u003c\/li\u003e\n  \u003cli\u003eWide temperature range: -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003eRound cross section, 0.25 inches thick — conforms to standard Dash 448 dimensional specifications\u003c\/li\u003e\n  \u003cli\u003ePackage of 5 — supports stocking needs for service vehicles and shop inventory\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service O-ring for any application specifying a Dash 448 O-ring in Buna-N. Compatible with petroleum products. Not FDA approved; not intended for food, beverage, or pharmaceutical fluid contact.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed plumbers, HVAC technicians, or qualified mechanics depending on the system. Depressurize and de-energize the system completely and drain any trapped fluid before removing the old O-ring. Lightly lubricate the O-ring with a compatible lubricant before seating to reduce the risk of pinching or tearing during assembly. Do not store unused O-rings in direct sunlight or near ozone-generating equipment such as electric motors.\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: 448\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 9.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 10 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.25 inches (6.99 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: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.9 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: ZMSCH90448\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51692127387954,"sku":"ZMSCH90448","price":20.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_93f41eb5-00e5-47e2-aff3-e7bc119e3ead.jpg?v=1788293458","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90448-o-ring-dash-448-buna-n-90-duro-5-pack","provider":"Voomi Supply","version":"1.0","type":"link"}