{"product_id":"value-collection-zmsch70279-o-ring-dash-279-buna-n-13-in-id","title":"Value Collection ZMSCH70279 O-ring Dash 279 Buna-n 13 in Id","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH70279 is a Dash 279 Buna-N (Nitrile Butadiene Rubber) O-ring with a round cross section, manufactured to SAE and MIL-Spec standards. It measures 13 inches inside diameter, 13.25 inches outside diameter, and 0.125 inches thick, with a 70 Shore hardness rating classified as hard. This O-ring provides excellent resistance to petroleum-based fluids and delivers strong compression set, tear resistance, and abrasion resistance. It is installed by licensed plumbers, HVAC technicians, and mechanical service professionals in fluid sealing applications across a wide range of industrial and trade systems.\u003c\/p\u003e\u003cp\u003eThis O-ring is suited for static and dynamic sealing applications where exposure to petroleum products, hydraulic fluids, or oils is expected. Its Buna-N compound is the most widely used O-ring elastomer in trade applications, making it a standard choice for pump seals, valve packing, pipe fittings, and fluid system connections in both residential and commercial settings. The large 13-inch inside diameter makes it appropriate for sizable flanged connections, tank lids, or large-bore valve assemblies. Packages contain 5 pieces per unit.\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 and hydraulic fluids\u003c\/li\u003e\n\u003cli\u003e70 Shore hardness rating for reliable compression set and seal retention\u003c\/li\u003e\n\u003cli\u003eOperating temperature range of -40 degrees F to 250 degrees F\u003c\/li\u003e\n\u003cli\u003eRound cross section conforms to SAE and MIL-Spec standards\u003c\/li\u003e\n\u003cli\u003eStrong tear and abrasion resistance for demanding service environments\u003c\/li\u003e\n\u003cli\u003eSold in packages of 5 pieces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with petroleum-based fluids and products. Designed as a standard Dash 279 O-ring replacement for large-bore sealing applications in plumbing, HVAC, hydraulic, and mechanical fluid systems.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by licensed plumbers or mechanical service technicians. De-energize and depressurize the system completely before removing the old O-ring or installing the replacement. Inspect the sealing groove for nicks, burrs, or corrosion before seating the new ring. Avoid storing Buna-N O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as ozone exposure degrades the elastomer.\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: 279\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 13.25 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 Shore (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\u003eFDA Approved\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: SAE, MIL-Spec\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 5 pieces\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\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: ZMSCH70279\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51701905522994,"sku":"ZMSCH70279","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/467653987aff062ff39142cd5a3c6f50.jpg?v=1788406695","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70279-o-ring-dash-279-buna-n-13-in-id","provider":"Voomi Supply","version":"1.0","type":"link"}