{"product_id":"value-collection-zmsch70271-o-ring-dash-271-buna-n-70a","title":"Value Collection ZMSCH70271 O-ring Dash 271 Buna-n 70A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70271 is a Dash 271 O-ring with a 9.25-inch inside diameter, 9.5-inch outside diameter, and 0.125-inch cross-section thickness. Made from Nitrile Butadiene Rubber (Buna-N), it carries a 70 Shore A hardness rating and a round cross-section profile. Buna-N is the most widely used O-ring elastomer in trade applications, valued for its excellent resistance to petroleum-based fluids, strong compression set characteristics, and reliable tear and abrasion resistance. Licensed HVAC techs, plumbers, and equipment service technicians install this type of seal in fluid-handling assemblies, pump housings, valve bodies, and flanged connections.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for use in systems that handle petroleum products, hydraulic fluids, and similar media. The rated temperature range of -40 degrees F to 250 degrees F makes it appropriate for a wide range of residential and light commercial mechanical systems. It is commonly used as a static or dynamic face seal in plumbing, HVAC refrigerant-free fluid circuits, pump assemblies, and industrial fluid-transfer components where a large-diameter seal is required. The package contains 5 O-rings per unit. Note that this part is not FDA approved and should not be stored in direct sunlight or near motors or electrical equipment that may generate ozone.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) construction with excellent petroleum-product resistance\u003c\/li\u003e\n  \u003cli\u003e70 Shore A hardness rating for a firm, reliable seal under compression\u003c\/li\u003e\n  \u003cli\u003eRound cross-section profile for consistent seating in standard O-ring grooves\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range: -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003ePackage quantity of 5 units per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a Dash 271 standard O-ring replacement compatible with petroleum-based fluid systems. Suitable for use with hydraulic oils, fuels, and other petroleum products. Not compatible with ozone-generating environments, direct UV exposure, or applications requiring FDA-approved materials.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed plumbers, HVAC technicians, or mechanical service technicians. Always depressurize and drain the system before replacing O-ring seals, and verify the groove dimensions match the Dash 271 specification before installation. Lightly lubricating the O-ring with a compatible fluid prior to seating helps prevent rolling or twisting during assembly. Avoid overstretching the O-ring during installation to maintain sealing integrity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 9.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 9.5 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\u003eDash Number\u003c\/strong\u003e: 271\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Round\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\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 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: 5\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\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: ZMSCH70271\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51708342665522,"sku":"ZMSCH70271","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8271b2c82cdca5d3346711ef9170d02d.jpg?v=1788445543","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70271-o-ring-dash-271-buna-n-70a","provider":"Voomi Supply","version":"1.0","type":"link"}