{"product_id":"value-collection-zmsch90339-o-ring-dash-339-nbr-25-pack","title":"Value Collection ZMSCH90339 O-ring Dash 339 Nbr 25 Pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH90339 is a Dash 339 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 3.25 inches inside diameter, 3.625 inches outside diameter, and 0.1875 inches in cross-section thickness. Rated at 90 durometer, this extra-hard O-ring delivers strong compression set resistance along with excellent tear and abrasion performance. The operating temperature range spans -40 to 250 degrees F, making it suitable for both refrigeration-adjacent and moderate-heat service environments. Each order ships in a package quantity of 25 units.\u003c\/p\u003e\u003cp\u003eThis O-ring is used in hydraulic, pneumatic, and fluid-handling assemblies where petroleum-based media is present. Common applications include pump seals, valve bodies, cylinder end caps, fittings, and manifold face seals in HVAC, plumbing, and industrial equipment. The Buna-N compound offers excellent resistance to petroleum products, oils, fuels, and hydraulic fluids. It is not recommended for use with ozone-generating environments, direct UV exposure, or ozone-producing electrical equipment such as motors. Plumbers, HVAC technicians, and industrial maintenance professionals routinely install this size in face-seal and groove-type configurations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBuna-N (Nitrile Butadiene Rubber) compound — excellent petroleum and oil resistance\u003c\/li\u003e\n\u003cli\u003e90 durometer extra-hard rating for high-compression and high-pressure sealing\u003c\/li\u003e\n\u003cli\u003eOperating range of -40 to 250 degrees F suits refrigeration and moderate-heat service\u003c\/li\u003e\n\u003cli\u003eRound cross-section, standard Dash 339 dimensioning per SAE and MIL-Spec standards\u003c\/li\u003e\n\u003cli\u003eTear and abrasion resistant construction for long service life in dynamic and static applications\u003c\/li\u003e\n\u003cli\u003ePackage quantity of 25 units supports shop stock and service fleet use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with petroleum products, hydraulic oils, fuels, and similar media. Meets SAE and MIL-Spec dimensional standards for Dash 339 O-rings. Not FDA approved; not suitable for food-contact or ozone-rich environments.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePower down or depressurize the system fully before removing any seals or fittings. Clean the groove and mating surfaces thoroughly before installing the new O-ring; contamination is a leading cause of premature seal failure. Lubricate the O-ring with a compatible fluid or O-ring lubricant prior to installation to prevent tearing during assembly. Follow applicable system pressure ratings and manufacturer torque guidelines for the fitting or housing being serviced.\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: 339\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 3.25 inches (81.92 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 3.625 inches (92.07 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1875 inches (5.33 mm)\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: 90 Durometer (Extra 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: 2.03 pounds\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: ZMSCH90339\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51720890777906,"sku":"ZMSCH90339","price":19.36,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_4f202a9b-7f4b-4121-ae19-56cb8bf492c7.jpg?v=1788570575","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90339-o-ring-dash-339-nbr-25-pack","provider":"Voomi Supply","version":"1.0","type":"link"}