{"product_id":"value-collection-zmschb90335-nitrile-o-ring-dash-8-335","title":"Value Collection ZMSCHB90335 Nitrile O-ring Dash 8-335","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCHB90335 is a rectangular cross-section backup O-ring made from Nitrile Butadiene Rubber (NBR), rated at 90 durometer for extra-hard sealing performance. It measures 2.768 inches inside diameter and 3.134 inches outside diameter, with a thickness of 0.0625 inches (1\/16 inch). The Dash 8-335 designation identifies this as a standard-dimensioned backup ring used to prevent O-ring extrusion under pressure in hydraulic and pneumatic assemblies. It is installed by plumbers, millwrights, and fluid-system technicians working on high-pressure sealing applications requiring dimensional consistency and chemical compatibility with petroleum-based fluids.\u003c\/p\u003e\u003cp\u003eThis backup ring is suited for use in hydraulic cylinders, pneumatic actuators, valve assemblies, and fluid transfer systems where standard O-rings require lateral support against extrusion. The 90 durometer hardness and NBR compound make it a strong candidate for systems handling petroleum oils, fuels, and general-purpose hydraulic fluids. The working temperature range of -40 degrees F to 250 degrees F covers most industrial and commercial equipment environments. Each package contains 10 rings, with a minimum order quantity of 1.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRectangular cross-section profile functions as a backup ring to prevent O-ring extrusion under pressure\u003c\/li\u003e\n\u003cli\u003e90 durometer extra-hard NBR compound resists deformation under sustained load\u003c\/li\u003e\n\u003cli\u003e2.768 inches ID and 3.134 inches OD conforming to Dash 8-335 standard dimensions\u003c\/li\u003e\n\u003cli\u003e0.0625 inch thickness for precise groove fit in standard backup-ring grooves\u003c\/li\u003e\n\u003cli\u003eRated for -40 degrees F to 250 degrees F continuous working temperature range\u003c\/li\u003e\n\u003cli\u003eSold in packages of 10 with a minimum order quantity of 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard Dash 8-335 backup O-ring for hydraulic and pneumatic sealing assemblies requiring a rectangular NBR ring with a 2.768 inch inside diameter. Confirm groove dimensions and system fluid compatibility before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified technician familiar with hydraulic or pneumatic sealing systems. De-energize and fully depressurize the system before disassembling any sealing components. Avoid stretching or kinking the backup ring during installation; use a blunt-tipped installation tool if needed to seat the ring in the groove without nicking. Confirm the ring is not FDA-rated before use in food-contact or potable-water applications, as this part is not FDA approved.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Nitrile Butadiene Rubber (NBR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 8-335\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 2.768 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 3.134 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.0625 inches (1\/16 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Rectangle\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\u003eFDA Approved\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 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: ZMSCHB90335\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51696252092722,"sku":"ZMSCHB90335","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bbbcceebcc98f31c0d76bce29370f44a_69e65824-10d5-471c-8031-6b81b15e7879.jpg?v=1788340684","url":"https:\/\/voomisupply.com\/products\/value-collection-zmschb90335-nitrile-o-ring-dash-8-335","provider":"Voomi Supply","version":"1.0","type":"link"}