{"product_id":"value-collection-zmsch70387-o-ring-dash-387-nitrile-nbr","title":"Value Collection ZMSCH70387 O-ring Dash 387 Nitrile Nbr","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70387 is a Dash 387 Nitrile Butadiene Rubber (NBR) O-ring designed for static and dynamic sealing applications in fluid and pneumatic systems. It measures 18 inches inside diameter, 18.375 inches outside diameter, and 0.1875 inches thick with a round cross section. Shore hardness is rated at 70, placing it in the hard range for reliable compression set performance. NBR is the most widely used O-ring elastomer, offering excellent resistance to petroleum-based fluids, strong tear and abrasion resistance, and a working temperature range of -40 degrees F to 250 degrees F. Licensed plumbers, HVAC technicians, and pipefitters routinely specify this compound for oil, fuel, and hydraulic sealing work.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for residential and commercial plumbing, HVAC, hydraulic, and general industrial sealing applications where petroleum-based fluid contact is expected. Its large diameter makes it appropriate for flanged pipe joints, large-bore valve bodies, pump covers, and similar assemblies. The NBR compound is compatible with petroleum products including oils, fuels, and hydraulic fluids. It should not be stored in direct sunlight or near motors and other electrical equipment that may generate ozone, as ozone exposure degrades NBR compound over time. This part is sold in a package quantity of 5.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNBR compound provides excellent resistance to petroleum products including oils, fuels, and hydraulic fluids\u003c\/li\u003e\n  \u003cli\u003eWorking temperature range of -40 degrees F to 250 degrees F suits a wide range of service environments\u003c\/li\u003e\n  \u003cli\u003eShore 70 hardness rating delivers reliable compression set and sealing force retention\u003c\/li\u003e\n  \u003cli\u003eRound cross section profile for standard O-ring groove fitment\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003eSold in a package quantity of 5 units\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum products including oils, fuels, and hydraulic fluids. Designed as an OEM-style replacement or new-installation seal for large-bore flanged assemblies, valve bodies, and pump housings requiring a Dash 387 cross-section O-ring in NBR material.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed plumbers, pipefitters, or HVAC technicians. De-pressurize and drain the system completely before removing existing seals or installing new ones. Inspect the O-ring groove for burrs, corrosion, or damage that could compromise the seal before seating the new O-ring. Avoid installing this compound in contact with ozone-generating equipment or in direct sunlight storage conditions.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 18.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 387\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\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 70 Shore (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\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\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: ZMSCH70387\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51723787698482,"sku":"ZMSCH70387","price":26.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d07c30dd8efcd500b8bb1759bdfbae86_9cb5bea4-5d55-4063-aad4-b6a5cf64ee72.jpg?v=1788608155","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70387-o-ring-dash-387-nitrile-nbr","provider":"Voomi Supply","version":"1.0","type":"link"}