{"product_id":"value-collection-zmsch70245-o-ring-dash-245-nbr-70-duro","title":"Value Collection ZMSCH70245 O-ring Dash 245 Nbr 70 Duro","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70245 is a Dash 245 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 4.375 inches inside diameter by 4.625 inches outside diameter with a 0.125 inch cross-section thickness. The round cross-section profile seats consistently in standard AN\/MS O-ring grooves. With a Shore A hardness of 70 and a working temperature range of -40 degrees F to 250 degrees F, this ring is suited for hydraulic, pneumatic, and fluid system sealing tasks handled by HVAC technicians, plumbers, and industrial maintenance professionals.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is appropriate for use in petroleum-based fluid systems, hydraulic circuits, water service lines, and compressed air applications where Buna-N compatibility is confirmed. It is commonly installed on pump housings, valve bodies, pipe flanges, and threaded fittings across residential and light commercial mechanical systems. It meets SAE and MIL-Spec standards, making it acceptable in both commercial trade and light industrial maintenance contexts. Sold in packages of 25 units, it suits both single-repair and service-stock purchasing needs.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) construction offers excellent resistance to petroleum products and hydraulic fluids\u003c\/li\u003e\n  \u003cli\u003eRound cross-section seats reliably in standard Dash 245 O-ring grooves\u003c\/li\u003e\n  \u003cli\u003eShore A 70 hardness rating provides a firm, durable seal with strong compression set resistance\u003c\/li\u003e\n  \u003cli\u003eOperating range of -40 degrees F to 250 degrees F covers most HVAC and plumbing service conditions\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards for broad application acceptance\u003c\/li\u003e\n  \u003cli\u003eStore away from direct sunlight, ozone sources, and electrical equipment to preserve elastomer integrity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service seal for any application calling for a Dash 245 Buna-N O-ring; compatible with petroleum-based fluids, hydraulic oils, and water service media where Nitrile Butadiene Rubber is the specified elastomer.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed plumbers, HVAC technicians, or hydraulic system technicians depending on the application. Shut off fluid supply and relieve system pressure fully before removing the old seal. Lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to prevent tearing during assembly. Do not stretch or nick the ring during installation, and inspect the groove for burrs or corrosion that could compromise the seal.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 245\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 4.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 4.625 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\u003eShore A Hardness\u003c\/strong\u003e: 70 (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\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: ZMSCH70245\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51691197890866,"sku":"ZMSCH70245","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/13505ae2da56db2bc0758e1f36351ee3.jpg?v=1788281369","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70245-o-ring-dash-245-nbr-70-duro","provider":"Voomi Supply","version":"1.0","type":"link"}