{"product_id":"value-collection-zmsch90255-o-ring-dash-255-nitrile-90d","title":"Value Collection ZMSCH90255 O-ring Dash 255 Nitrile 90D","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH90255 is a Dash 255 Buna-N (Nitrile Butadiene Rubber) O-ring rated at 90 durometer hardness, intended for use in hydraulic, pneumatic, and fluid-handling assemblies where petroleum-based media resistance is required. The ring measures 5.625 inches inside diameter, 5.875 inches outside diameter, and 0.125 inches thick with a round cross-section. Its extra-hard 90 durometer compound provides excellent compression set resistance and strong tear and abrasion resistance. Licensed plumbers, HVAC technicians, and industrial maintenance mechanics working with petroleum-product fluid circuits rely on this elastomer for durable sealing performance across a wide service temperature range.\u003c\/p\u003e\u003cp\u003eThis O-ring is suited for residential and commercial fluid-system applications involving petroleum-based oils, fuels, and hydraulic fluids. The Buna-N compound is the most widely used O-ring elastomer in trade applications and performs reliably in static or dynamic sealing situations. With a temperature operating range of -40 to 250 degrees F, it is appropriate for ambient outdoor installations as well as moderate-heat equipment environments. Packaged in quantities of 25 per unit, it fits maintenance stock programs and multi-unit repair jobs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBuna-N (Nitrile Butadiene Rubber) compound with excellent resistance to petroleum products\u003c\/li\u003e\n\u003cli\u003e90 durometer extra-hard rating for strong compression set and abrasion resistance\u003c\/li\u003e\n\u003cli\u003eOperating temperature range: -40 to 250 degrees F\u003c\/li\u003e\n\u003cli\u003eRound cross-section per SAE and MIL-Spec standards\u003c\/li\u003e\n\u003cli\u003eDash 255 standard sizing for consistent cross-trade compatibility\u003c\/li\u003e\n\u003cli\u003ePackaged 25 pieces per unit with a minimum order quantity of 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or maintenance-stock O-ring for hydraulic, pneumatic, and petroleum-fluid sealing applications requiring a Dash 255 Buna-N ring. Compatible with petroleum products; not recommended for exposure to ozone sources, direct sunlight during storage, or proximity to electrical equipment that generates ozone.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by licensed plumbers, HVAC technicians, or industrial maintenance mechanics. Always de-pressurize and isolate the fluid circuit before removing or installing O-rings. Inspect the groove and mating surfaces for burrs or scoring before seating the new ring. Avoid stretching the O-ring beyond what is necessary for installation, and do not store unused rings in direct sunlight or near ozone-generating equipment such as motors.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 255\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 5.625 inches (5-5\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5.875 inches (5-7\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches (1\/8 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: 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 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: 1.42 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: ZMSCH90255\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51718006767922,"sku":"ZMSCH90255","price":25.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_13204c32-cc78-43c8-a5af-e7c52fcde3cd.jpg?v=1788548471","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90255-o-ring-dash-255-nitrile-90d","provider":"Voomi Supply","version":"1.0","type":"link"}