{"product_id":"value-collection-zmsce70278-epdm-o-ring-dash-278","title":"Value Collection ZMSCE70278 Epdm O-ring Dash 278","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCE70278 is an EPDM (Ethylene Propylene Diene Monomer) O-ring with a round cross section, sized to the Dash 278 standard. It measures 12 inches inside diameter, 12.25 inches outside diameter, and 0.125 inches thick. With a durometer hardness rating of 70 (Hard), this O-ring provides firm sealing force suitable for demanding fluid environments. EPDM compound offers strong resistance to hot water, steam, and phosphate ester hydraulic fluids, making it a reliable choice for plumbing, HVAC, and industrial sealing applications. Licensed tradespeople and maintenance technicians typically specify this size for large-bore sealing tasks.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for use in systems handling hot water, steam, and phosphate ester type hydraulic fluids. It is also noted for excellent resistance to Skydrol-type fluids used in commercial aircraft hydraulic systems, expanding its use into aerospace ground-support and industrial hydraulic applications. The large 12-inch bore size makes it appropriate for pipe flanges, large valve stems, pump housings, and similar equipment found in commercial plumbing, HVAC hydronic systems, and industrial process piping. Each package contains 2 O-rings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eEPDM material rated for service from -65 degrees F to 300 degrees F\u003c\/li\u003e\n  \u003cli\u003eDash 278 standard sizing: 12 inches ID, 12.25 inches OD, 0.125 inches thick\u003c\/li\u003e\n  \u003cli\u003e70 durometer hardness (Hard) for firm, reliable sealing under pressure\u003c\/li\u003e\n  \u003cli\u003eCompatible with hot water, steam, and phosphate ester hydraulic fluids\u003c\/li\u003e\n  \u003cli\u003eExcellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems\u003c\/li\u003e\n  \u003cli\u003eRound cross section for consistent groove fit and sealing contact\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with systems and fluids including hot water, steam, and phosphate ester type hydraulic fluids. Designed as an OEM-style replacement O-ring for large-bore plumbing, HVAC hydronic, and industrial hydraulic sealing applications requiring a Dash 278 EPDM ring.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eO-ring installation should be performed by a qualified plumber, pipefitter, or mechanical technician following applicable IPC or ASME guidelines. Shut off and depressurize the system completely before removing the old seal. Inspect the groove and mating surfaces for damage or debris before seating the new O-ring. Avoid twisting or rolling the O-ring during installation, and do not use petroleum-based lubricants with EPDM compound, as they can cause swelling and seal failure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: EPDM (Ethylene Propylene Diene Monomer)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 278\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 12.25 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\u003eHardness\u003c\/strong\u003e: 70\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: -65 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature\u003c\/strong\u003e: 300 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Fluids\u003c\/strong\u003e: Hot Water, Steam, Phosphate Ester\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\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: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31401503\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: ZMSCE70278\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51695689498930,"sku":"ZMSCE70278","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d07c30dd8efcd500b8bb1759bdfbae86_e2c0b3be-4610-4e59-9e8e-0f8f8086a56e.jpg?v=1788337469","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsce70278-epdm-o-ring-dash-278","provider":"Voomi Supply","version":"1.0","type":"link"}