{"product_id":"value-collection-zmsch70339-o-ring-dash-339-buna-n","title":"Value Collection ZMSCH70339 O-ring Dash 339 Buna-n","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70339 is a Dash 339 Buna-N (Nitrile Butadiene Rubber) O-ring with a round cross section, designed for use in hydraulic, pneumatic, and fluid-sealing applications. It measures 3.25 inches inside diameter, 3.625 inches outside diameter, and 0.1875 inches thick. Rated at 70 durometer hardness, this O-ring delivers reliable compression set resistance along with strong tear and abrasion resistance. The Buna-N elastomer compound is the most widely used O-ring material in the trade, valued for its excellent compatibility with petroleum-based fluids and oils. It conforms to SAE and MIL-Spec standards and is sold in a package quantity of 25.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for residential and commercial plumbing, hydraulic systems, fuel handling equipment, and general industrial fluid sealing where petroleum product exposure is expected. Its operating temperature range of -40 degrees F to 250 degrees F makes it appropriate for a broad range of service environments. HVAC technicians, plumbers, and industrial maintenance professionals routinely use Dash 339 Buna-N O-rings as replacement seals in pumps, valves, fittings, and manifold assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N elastomer with excellent resistance to petroleum products, oils, and fuels\u003c\/li\u003e\n  \u003cli\u003e70 durometer hardness rating for reliable compression and sealing performance\u003c\/li\u003e\n  \u003cli\u003eRound cross section, Dash 339 designation for standardized sizing\u003c\/li\u003e\n  \u003cli\u003eOperating range of -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003eStrong tear and abrasion resistance for extended service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum products and petroleum-based fluids. Designed for use in any application requiring a standard Dash 339 O-ring with Buna-N material. Not recommended for exposure to ozone, direct sunlight during storage, or environments 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 plumbers, HVAC technicians, or industrial mechanics during pump, valve, or fitting service. Shut off fluid supply and relieve system pressure completely before replacing any O-ring seal. Lubricate the O-ring with a compatible petroleum-based or silicone-based lubricant prior to seating to reduce the risk of tearing during installation. Do not store unused O-rings in direct sunlight or near ozone-generating equipment, as this will degrade the elastomer.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 3.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 3.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 339\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 Durometer (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\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\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: ZMSCH70339\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693347176754,"sku":"ZMSCH70339","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f940e14f49f6fff37e2e1f148f74bc8f.jpg?v=1788311032","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70339-o-ring-dash-339-buna-n","provider":"Voomi Supply","version":"1.0","type":"link"}