{"product_id":"value-collection-zmsch70md228-o-ring-dash-228-buna-n-70a","title":"Value Collection ZMSCH70MD228 O-ring Dash 228 Buna-n 70A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70MD228 is a Dash 228 O-ring manufactured from Buna-N (nitrile butadiene rubber) with a 70 Shore A durometer hardness rating. It measures 2.234 inches inner diameter, 2.5 inches outer diameter, and 0.125 inches thick with a round cross section. This elastomer is the most widely used O-ring material in the trades, offering excellent resistance to petroleum-based fluids, strong compression set performance, and solid tear and abrasion resistance. Licensed plumbers, HVAC technicians, and fluid-system mechanics use this seal in hydraulic, pneumatic, and fuel-line applications. Each package contains 5 rings.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for sealing applications in residential and commercial systems where petroleum-based fluids, oils, or fuels are present. Typical install scenarios include pump housings, valve bodies, hydraulic fittings, and plumbing connections where a 2.234-inch ID bore seat is required. The working temperature range of -40 degrees F to 250 degrees F makes it appropriate for both refrigeration-adjacent and moderate-heat fluid systems. Buna-N is not recommended for exposure to ozone, direct sunlight during storage, or environments near motors and other equipment that generate ozone.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (nitrile) compound provides excellent resistance to petroleum products, oils, and fuels\u003c\/li\u003e\n  \u003cli\u003e70 Shore A hardness rated Hard — balances sealing conformance with extrusion resistance\u003c\/li\u003e\n  \u003cli\u003eRound cross section, Dash 228 sizing for consistent groove fitment\u003c\/li\u003e\n  \u003cli\u003eRated -40 degrees F to 250 degrees F continuous working temperature range\u003c\/li\u003e\n  \u003cli\u003eGood tear and abrasion resistance for dynamic and static sealing applications\u003c\/li\u003e\n  \u003cli\u003ePack of 5 units; minimum order quantity of 1 package\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard Dash 228 O-ring replacement for any groove or bore seat requiring a 2.234-inch ID, 2.5-inch OD, 0.125-inch cross section seal in petroleum-compatible fluid systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system mechanics during pump, valve, or fitting service. Shut down system pressure and depressurize all lines before removing the old seal. Lightly lubricate the O-ring with a compatible petroleum-based grease prior to seating to reduce installation stress and risk of tearing. Do not store unused rings in direct sunlight or near motors, ozone generators, or other electrical equipment that may degrade the elastomer.\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: 228\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 2.234 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness (Cross Section)\u003c\/strong\u003e: 0.125 inches\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 (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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\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: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.11 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31401503\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: ZMSCH70MD228\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51723458674994,"sku":"ZMSCH70MD228","price":19.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d07c30dd8efcd500b8bb1759bdfbae86_df25de80-7b10-4d43-8606-d322161a2cc1.jpg?v=1788605156","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70md228-o-ring-dash-228-buna-n-70a","provider":"Voomi Supply","version":"1.0","type":"link"}