{"product_id":"value-collection-zmsch70310-o-ring-dash-310-nbr-pack-of-50","title":"Value Collection ZMSCH70310 O-ring Dash 310 Nbr Pack of 50","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH70310 is a Dash 310 nitrile butadiene rubber (NBR) O-ring used to create leak-free seals in fluid and pneumatic systems. Measuring 0.5 inches inside diameter, 0.875 inches outside diameter, and 0.1875 inches thick, this round-cross-section O-ring is one of the most widely specified elastomer seals in the trade. It carries a Shore A hardness of 70 and resists petroleum-based fluids, making it a go-to choice for HVAC, plumbing, and hydraulic service work. Each package contains 50 rings.\u003c\/p\u003e\u003cp\u003eThis O-ring is suited for residential and light commercial applications wherever a Dash 310 seal is called out in service documentation. Typical install scenarios include refrigeration service valves, plumbing shut-off valves, hydraulic fittings, and fuel-system connections that contact petroleum products. The NBR compound provides excellent compression set resistance and strong tear and abrasion resistance across a broad service temperature range. Petroleum-compatible fluid circuits are the primary application. Avoid use in ozone-rich or UV-exposed environments without additional protection.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDash 310 standard sizing: 0.5 inches ID, 0.875 inches OD, 0.1875 inches thick\u003c\/li\u003e\n\u003cli\u003eNitrile butadiene rubber (NBR\/Buna-N) compound with excellent petroleum fluid resistance\u003c\/li\u003e\n\u003cli\u003eShore A hardness of 70 for reliable compression sealing under pressure\u003c\/li\u003e\n\u003cli\u003eRated from -40 degrees F to 250 degrees F continuous service\u003c\/li\u003e\n\u003cli\u003eRound cross section for uniform seating in standard O-ring grooves\u003c\/li\u003e\n\u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard Dash 310 O-ring replacement compatible with petroleum-based fluid systems including hydraulic circuits, refrigeration valves, and plumbing assemblies that specify NBR elastomer seals.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by licensed plumbers, HVAC technicians, and hydraulic service technicians depending on the application. Always depressurize and drain the system before replacing O-rings, and shut off all fluid supply valves. Lightly lubricate the O-ring with a compatible fluid or petroleum-based grease before seating to prevent tearing during assembly. Do not store unused O-rings in direct sunlight or near motors, generators, or other equipment that may produce ozone, as ozone degrades NBR compound over time.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1875 inches\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: Nitrile Butadiene Rubber (Buna-N)\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\u003eDash Number\u003c\/strong\u003e: 310\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\u003eStandards\u003c\/strong\u003e: SAE, MIL-Spec\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\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: ZMSCH70310\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51695781347634,"sku":"ZMSCH70310","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/04c9bc47012fa7b625c9b2acf328212c.jpg?v=1788338181","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70310-o-ring-dash-310-nbr-pack-of-50","provider":"Voomi Supply","version":"1.0","type":"link"}