{"product_id":"value-collection-zmsch70328-o-ring-dash-328-nitrile-70a","title":"Value Collection ZMSCH70328 O-ring Dash 328 Nitrile 70A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH70328 is a Dash 328 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in sealing applications across HVAC, plumbing, hydraulic, and pneumatic systems. With a 1.875-inch inside diameter, 2.25-inch outside diameter, and 0.1875-inch cross-section thickness, this black, round-cross-section O-ring carries a Shore A hardness rating of 70. It is rated for service from -40 degrees F to 250 degrees F and offers proven resistance to petroleum-based fluids, compression set, tearing, and abrasion. Licensed tradespeople and maintenance technicians install this part as a precision sealing element wherever Buna-N compatibility is required.\u003c\/p\u003e\u003cp\u003eThis O-ring suits a broad range of residential and commercial applications involving petroleum-based media, including refrigerant oil circuits, fuel systems, hydraulic fittings, and general plumbing connections. Its Buna-N compound makes it the standard choice when sealing against oils, fuels, and petroleum derivatives. The round cross section seats cleanly in standard O-ring grooves machined to Dash 328 dimensions. Packages contain 50 pieces per unit, making them practical for service fleets and shop stock. This part meets SAE and MIL-Spec standards.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBuna-N (Nitrile Butadiene Rubber) construction with excellent petroleum product resistance\u003c\/li\u003e\n\u003cli\u003e70 Shore A hardness for reliable compression set performance\u003c\/li\u003e\n\u003cli\u003eOperating range of -40 degrees F to 250 degrees F\u003c\/li\u003e\n\u003cli\u003eRound cross section seats in standard Dash 328 O-ring grooves\u003c\/li\u003e\n\u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n\u003cli\u003eSold in a 50-piece package with a minimum order quantity of 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or service replacement for any application requiring a standard Dash 328 O-ring in Buna-N with a 70 Shore A hardness rating. Compatible with petroleum products; not recommended for exposure to ozone, direct sunlight during storage, or environments that generate ozone such as areas near electric motors.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePlumbers, HVAC technicians, and hydraulic system technicians typically install O-rings of this type. Before replacing an O-ring, shut off fluid supply and depressurize the line or component completely. Lightly lubricate the O-ring with a compatible lubricant before seating to reduce installation stress and prevent twisting. Do not store unused O-rings in direct sunlight or near motors or other equipment that generates ozone, as this degrades the Buna-N compound.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 2.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness (Cross Section)\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 328\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\u003eCross Section Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShore A Hardness\u003c\/strong\u003e: 70\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: 50 pieces\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: ZMSCH70328\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51697568973106,"sku":"ZMSCH70328","price":15.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/812d541d0a881dbf35e8aa3fbdeeadca.jpg?v=1788352933","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70328-o-ring-dash-328-nitrile-70a","provider":"Voomi Supply","version":"1.0","type":"link"}