{"product_id":"value-collection-zmsch90239-o-ring-dash-239-nbr-90a","title":"Value Collection ZMSCH90239 O-ring Dash 239 Nbr 90A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH90239 is a Dash 239 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 3.625 inches inside diameter, 3.875 inches outside diameter, and 0.125 inches thick, with a round cross-section and an extra-hard 90 durometer rating. The operating temperature range runs from -40 degrees F to 250 degrees F. This O-ring delivers excellent resistance to petroleum-based fluids along with strong compression set, tear resistance, and abrasion resistance. Licensed plumbers, HVAC technicians, and industrial maintenance professionals install this part in hydraulic, pneumatic, and fluid-transfer assemblies.\u003c\/p\u003e\n\u003cp\u003eThe ZMSCH90239 is suited for static and dynamic sealing in systems that handle petroleum products, oils, fuels, and hydraulic fluids. Its 90 durometer hardness makes it appropriate for higher-pressure applications where a softer ring would extrude or deform under load. Typical install environments include hydraulic cylinders, pipe fittings, pumps, compressors, and other fluid-handling equipment in residential, commercial, and light industrial service. The Buna-N compound conforms to SAE and MIL-Spec standards. This package contains 50 O-rings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) compound with excellent petroleum-fluid resistance\u003c\/li\u003e\n  \u003cli\u003eExtra-hard 90 durometer rating for high-pressure and high-wear sealing applications\u003c\/li\u003e\n  \u003cli\u003eOperating range of -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eRound cross-section, Dash 239 standard sizing\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003ePackage quantity of 50 rings per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum products, oils, hydraulic fluids, and similar media. Designed as a standard Dash 239 O-ring replacement for hydraulic, pneumatic, and fluid-sealing assemblies where Buna-N elastomer is specified. Not recommended for exposure to ozone, direct sunlight during storage, or equipment that generates ozone such as electric motors.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed technician or qualified maintenance professional familiar with fluid sealing systems. Always depressurize and isolate the assembly before removing or installing any O-ring. Inspect the groove and mating surfaces for nicks, burrs, or contamination before seating the new ring. Do not store Buna-N O-rings near motors, ozone-generating equipment, or in direct sunlight, as ozone exposure degrades the elastomer.\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: 239\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 3.625 inches (91.67 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 3.875 inches (98.42 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches (3.53 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: 50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.88 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: ZMSCH90239\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51701724152114,"sku":"ZMSCH90239","price":23.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_61ad9b80-678e-40a6-9b04-9a8ad0e3fcca.jpg?v=1788404362","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90239-o-ring-dash-239-nbr-90a","provider":"Voomi Supply","version":"1.0","type":"link"}