{"product_id":"value-collection-zmsch70md318-dash-318-nitrile-o-ring-5-pack","title":"Value Collection ZMSCH70MD318 Dash 318 Nitrile O-ring 5-pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70MD318 is a Dash 318 Buna-N (Nitrile Butadiene Rubber) O-ring with a 0.975 inch inside diameter, a 1.375 inch outside diameter, and a 0.1875 inch cross-section thickness. Rated at 70 Shore A hardness, this black round-section O-ring is sold in a pack of five. It seals fluid and gas connections across plumbing, HVAC, hydraulic, and general mechanical applications. Licensed tradespeople and maintenance technicians install this type of O-ring in fittings, valves, pumps, and manifolds where petroleum-based fluid compatibility is required.\u003c\/p\u003e\n\u003cp\u003eBuna-N is the most widely used O-ring elastomer in trade work. It is well suited for residential and light commercial plumbing systems, HVAC refrigerant-side and oil-side joints, hydraulic assemblies, and pneumatic fittings where the working fluid is a petroleum product or petroleum-base lubricant. Operating temperature range runs from -40 degrees F to 250 degrees F, making this O-ring appropriate for a broad range of service conditions encountered in the field.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile) material delivers excellent resistance to petroleum products, oils, and fuels\u003c\/li\u003e\n  \u003cli\u003e70 Shore A hardness rating provides reliable compression set and sealing force under mechanical load\u003c\/li\u003e\n  \u003cli\u003eRound cross-section profile fits standard O-ring grooves machined to AS568 Dash 318 dimensions\u003c\/li\u003e\n  \u003cli\u003eRated from -40 degrees F to 250 degrees F for wide service temperature coverage\u003c\/li\u003e\n  \u003cli\u003eGood tear and abrasion resistance extends service life in dynamic and static sealing applications\u003c\/li\u003e\n  \u003cli\u003ePack of 5 supports single-repair and multi-unit service calls from one package\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service O-ring for any application requiring a standard AS568 Dash 318 O-ring groove. Compatible with petroleum-based fluids, oils, and lubricants. Not recommended for exposure to ozone, direct sunlight during storage, or applications requiring FDA food-contact compliance.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eO-ring replacement is performed by plumbers, HVAC technicians, and mechanical service trades. Always depressurize and shut off fluid supply to the assembly before removing the old O-ring. Lightly lubricate the new O-ring with a compatible petroleum-based or silicone grease before seating it in the groove to prevent pinching or tearing during assembly. Avoid twisting the O-ring during installation, as a twisted ring will not seal correctly and will fail prematurely.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.975 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 1.375 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: 318\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 Fluids\u003c\/strong\u003e: Petroleum products\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: 0.06 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: ZMSCH70MD318\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51700035486002,"sku":"ZMSCH70MD318","price":16.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d07c30dd8efcd500b8bb1759bdfbae86_3d50cd5f-461b-4eae-b8f7-0998c0c92483.jpg?v=1788385218","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70md318-dash-318-nitrile-o-ring-5-pack","provider":"Voomi Supply","version":"1.0","type":"link"}