{"product_id":"value-collection-zmsch90350-o-ring-dash-350-buna-n-90-duro","title":"Value Collection ZMSCH90350 O-ring Dash 350 Buna-n 90 Duro","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH90350 is a Dash 350 Buna-N (Nitrile Butadiene Rubber) O-ring used to create reliable fluid seals in hydraulic, pneumatic, plumbing, and HVAC applications. It measures 4.625 inches inside diameter, 5 inches outside diameter, and 0.1875 inches thick with a round cross-section. Rated at 90 durometer (extra hard), this O-ring handles a temperature range of -40 to 250 degrees F and is compatible with petroleum-based fluids. Buna-N is the most widely used O-ring elastomer in trade applications, chosen for its excellent compression set, tear resistance, and abrasion resistance. Sold in packages of 10.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for residential and commercial plumbing, HVAC equipment, hydraulic assemblies, and other systems that handle petroleum products or oils. The Dash 350 size is a standard AS568 designation, making it a common replacement in pumps, valves, fittings, and manifold assemblies. Plumbers, pipefitters, HVAC technicians, and millwrights regularly install this size when servicing fluid-handling equipment that requires a durable, large-diameter static or dynamic seal.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile) elastomer — excellent resistance to petroleum products and oils\u003c\/li\u003e\n  \u003cli\u003e90 durometer extra-hard rating for high-pressure sealing applications\u003c\/li\u003e\n  \u003cli\u003eWide temperature range: -40 to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eRound cross-section, Dash 350 standard size\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003ePackage quantity of 10 per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum products and petroleum-based fluids. Designed as a standard Dash 350 O-ring replacement for pumps, valves, hydraulic fittings, and HVAC equipment requiring a 4.625-inch ID seal. Not FDA approved; not recommended for ozone-rich environments or direct sunlight exposure.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed plumbers, pipefitters, or HVAC technicians. Always relieve system pressure and shut off fluid supply before removing old seals or installing new O-rings. Inspect the mating groove for nicks, burrs, or corrosion before seating the O-ring. Avoid storing Buna-N O-rings near motors, electrical equipment, or direct sunlight, as ozone and UV exposure can degrade the material.\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: 350\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 4.625 inches (116.84 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5 inches (127.00 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: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.13 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: ZMSCH90350\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51712602833202,"sku":"ZMSCH90350","price":16.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_143b61fe-cab3-4628-89f3-29252d73330a.jpg?v=1788486918","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90350-o-ring-dash-350-buna-n-90-duro","provider":"Voomi Supply","version":"1.0","type":"link"}