{"product_id":"value-collection-zmsch90139-o-ring-dash-139-nbr-90-duro","title":"Value Collection ZMSCH90139 O-ring Dash 139 Nbr 90 Duro","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH90139 is a Dash 139 nitrile butadiene rubber (NBR\/Buna-N) O-ring designed for static and dynamic sealing applications across HVAC, plumbing, hydraulic, and general industrial systems. It measures 2.188 inches inside diameter and 2.375 inches outside diameter with a 0.0937-inch cross-section thickness. Rated at 90 durometer (extra hard), this O-ring delivers high resistance to compression set, tearing, and abrasion. Its operating temperature range spans -40 degrees F to 250 degrees F, making it suitable for a wide range of service environments. Plumbers, HVAC technicians, and industrial mechanics are the primary installers of this component.\u003c\/p\u003e\u003cp\u003eThis O-ring is suited for use in systems that contact petroleum-based fluids, mineral oils, and related lubricants. Common applications include pump seals, valve stems, fittings, couplings, and hydraulic cylinder ports in both residential and commercial installations. The Buna-N elastomer is the most widely used O-ring material in trade applications due to its balanced performance across oil, fuel, and water service. This SKU ships in a package quantity of 50 rings, making it appropriate for service kits or shop stock replenishment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBuna-N (NBR) elastomer with excellent resistance to petroleum products and mineral oils\u003c\/li\u003e\n\u003cli\u003e90 durometer hardness rating for extra-hard, high-compression sealing performance\u003c\/li\u003e\n\u003cli\u003eOperating temperature range of -40 degrees F to 250 degrees F\u003c\/li\u003e\n\u003cli\u003eRound cross-section, 0.0937 inches thick, conforming to Dash 139 sizing standard\u003c\/li\u003e\n\u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n\u003cli\u003ePackage quantity of 50 units per order, with a minimum order quantity of 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with petroleum products, mineral oils, and hydraulic fluids. Conforms to SAE and MIL-Spec O-ring standards. Not recommended for use with ozone-generating environments, direct sunlight exposure, or systems using ozone, ketones, esters, or strong acids. FDA approval status: No.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by licensed plumbers, HVAC technicians, or industrial mechanics during valve, pump, or fitting service. Always depressurize and drain the system before removing or installing O-rings. Lubricate the O-ring with a compatible fluid or O-ring lubricant prior to seating to prevent tearing during installation. Do not stretch the O-ring beyond the groove diameter, and inspect the groove for burrs or damage before reassembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 2.188 inches (55.25 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 2.375 inches (60.32 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.0937 inches (2.62 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Section Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 139\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: 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 Fluids\u003c\/strong\u003e: Petroleum products, mineral oils\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: 1.31 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: ZMSCH90139\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694685323570,"sku":"ZMSCH90139","price":15.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_f8f99a86-3ad9-4ef4-8ea3-6d9a18b85235.jpg?v=1788327176","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90139-o-ring-dash-139-nbr-90-duro","provider":"Voomi Supply","version":"1.0","type":"link"}