{"product_id":"value-collection-zmsch70203-o-ring-dash-203-buna-n-pack-100","title":"Value Collection ZMSCH70203 O-ring Dash 203 Buna-n Pack 100","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH70203 is a Dash 203 O-ring manufactured from Buna-N (Nitrile Butadiene Rubber), the most widely used elastomer in fluid sealing applications. This O-ring measures 0.313 inches inside diameter, 0.563 inches outside diameter, and 0.125 inches thick, with a round cross-section profile and a Shore A hardness rating of 70. Buna-N material delivers excellent resistance to petroleum-based fluids, strong compression set performance, and reliable tear and abrasion resistance. This part is installed by HVAC technicians, plumbers, and mechanical tradespeople working on fluid and gas handling systems.\u003c\/p\u003e\u003cp\u003eThis O-ring is suited for use in residential and commercial applications involving petroleum-based products, hydraulic fluids, oils, and fuel systems. It performs across a wide service temperature range of -40 degrees F to 250 degrees F, making it appropriate for a broad range of HVAC, plumbing, and general mechanical assemblies. Each package contains 100 O-rings, and the minimum order quantity is 1 package of 100 units. Buna-N is not recommended for use with ozone-generating environments, direct sunlight exposure, or near electrical motors that produce ozone.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBuna-N (Nitrile Butadiene Rubber) construction provides excellent petroleum product resistance\u003c\/li\u003e\n\u003cli\u003eDash 203 standard sizing: 0.313 inches ID, 0.563 inches OD, 0.125 inches thick\u003c\/li\u003e\n\u003cli\u003eRound cross-section profile for reliable sealing in standard O-ring grooves\u003c\/li\u003e\n\u003cli\u003eService temperature range of -40 degrees F to 250 degrees F\u003c\/li\u003e\n\u003cli\u003eShore A hardness of 70 for firm compression and reduced extrusion risk\u003c\/li\u003e\n\u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with petroleum products including oils, fuels, and hydraulic fluids. Designed as an OEM-style replacement or service O-ring for standard Dash 203 groove applications in HVAC, plumbing, and mechanical systems. Not FDA approved for food-contact applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eO-ring installation should be performed by a qualified technician following applicable system service procedures. De-energize and depressurize the system fully before disassembly. Lightly lubricate the O-ring with a compatible fluid or O-ring lubricant prior to installation to reduce the risk of tearing during seating. Avoid storing Buna-N O-rings near motors, electrical equipment, or in direct sunlight, as ozone and UV exposure degrade the material over time.\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: 203\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.313 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.563 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\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: 70 Shore A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness Rating\u003c\/strong\u003e: Hard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\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\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: 100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31401503\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: ZMSCH70203\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694473216306,"sku":"ZMSCH70203","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/47404b4b424ebdc239c625bf14410746.jpg?v=1788324661","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70203-o-ring-dash-203-buna-n-pack-100","provider":"Voomi Supply","version":"1.0","type":"link"}