{"product_id":"value-collection-zmsch70256-o-ring-nitrile-dash-256","title":"Value Collection ZMSCH70256 O-ring Nitrile Dash 256","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70256 is a Dash 256 Nitrile Butadiene Rubber (Buna-N) O-ring with a 5.75-inch inside diameter, 6-inch outside diameter, and 0.125-inch cross-section thickness. It features a round cross-section profile and a Shore A hardness of 70, rated Hard. Buna-N is the most widely used O-ring elastomer in industrial and mechanical applications, offering excellent resistance to petroleum-based fluids along with strong compression set, tear resistance, and abrasion resistance. Licensed HVAC technicians, plumbers, and mechanical contractors specify this material for sealing applications involving oils, fuels, and hydraulic fluids.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for use in residential and commercial HVAC systems, plumbing assemblies, hydraulic circuits, and fluid-handling equipment where petroleum-product exposure is present. Its operating temperature range spans -40 degrees F to 250 degrees F, making it appropriate for a broad range of service environments. The Dash 256 designation follows standard AS568 sizing, allowing straightforward cross-referencing to OEM specifications. It ships in a package quantity of 10 units.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) material with excellent petroleum-product resistance\u003c\/li\u003e\n  \u003cli\u003e5.75-inch inside diameter and 6-inch outside diameter, 0.125-inch cross-section thickness\u003c\/li\u003e\n  \u003cli\u003eShore A hardness of 70, rated Hard for reliable compression sealing\u003c\/li\u003e\n  \u003cli\u003eOperating range: -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eRound cross-section profile meets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003eStandard Dash 256 sizing for easy OEM cross-reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum products including oils, fuels, and hydraulic fluids. Designed as a standard Dash 256 AS568-size O-ring replacement for use in HVAC, plumbing, hydraulic, and general mechanical sealing applications. Not FDA approved. Should not be stored in direct sunlight or near motors or other electrical equipment that may generate ozone.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed HVAC technicians, plumbers, or mechanical service professionals. Always depressurize and de-energize the system before removing or replacing any O-ring seal. Ensure the seating groove is clean and free of debris before installing the new O-ring. Lightly lubricating the O-ring with a compatible fluid during installation helps prevent rolling or tearing during assembly.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 5.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness (Cross Section)\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\u003eMaterial\u003c\/strong\u003e: Buna-N (Nitrile Butadiene Rubber)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 70 Shore A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness Rating\u003c\/strong\u003e: 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\u003eDash Number\u003c\/strong\u003e: 256\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: 0.02 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: ZMSCH70256\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51698873631026,"sku":"ZMSCH70256","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/949958f4e15c400d54dcbdb8a2f5343f.jpg?v=1788369213","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70256-o-ring-nitrile-dash-256","provider":"Voomi Supply","version":"1.0","type":"link"}