{"product_id":"value-collection-zmsch70385-o-ring-dash-385-buna-n-70a","title":"Value Collection ZMSCH70385 O-ring Dash 385 Buna-n 70A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70385 is a Dash 385 Buna-N (Nitrile Butadiene Rubber) O-ring with a round cross section, designed for static and dynamic sealing applications in fluid and pneumatic systems. It measures 16 inches inside diameter, 16.375 inches outside diameter, and 0.1875 inches thick. The compound carries a 70 Shore A hardness rating, placing it in the hard range for NBR elastomers. Rated from -40 degrees F to 250 degrees F, this O-ring delivers reliable sealing performance in systems that handle petroleum-based fluids. It is installed by plumbers, HVAC technicians, pipefitters, and industrial maintenance mechanics across a wide range of trade applications.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for use in residential and commercial plumbing systems, HVAC equipment, hydraulic assemblies, and industrial fluid-handling components wherever a large-bore Dash 385 seal is required. The Buna-N compound makes it a go-to choice in any application involving petroleum products, oils, fuels, and many hydraulic fluids. It is not recommended for use with ozone, strong oxidizing agents, or ketone-based fluids. Meets SAE and MIL-Spec standards. Sold in a package quantity of 5.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (NBR) elastomer  -  the most widely used O-ring material for petroleum product resistance\u003c\/li\u003e\n  \u003cli\u003e70 Shore A hardness  -  hard rating providing excellent compression set and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range: -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eRound cross section, Dash 385 standard sizing\u003c\/li\u003e\n  \u003cli\u003eExcellent tear and abrasion resistance for demanding service environments\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service seal for large-bore plumbing, HVAC, hydraulic, and industrial fluid-handling systems requiring a Dash 385 Buna-N O-ring. Compatible with petroleum products, oils, and hydraulic fluids. Not FDA approved; not suitable for food-contact applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed plumbers, pipefitters, or HVAC technicians as part of routine maintenance or equipment repair. Shut down and depressurize the system completely before removing the old seal. Clean the groove thoroughly and inspect for damage before seating the new O-ring. Avoid storing O-rings in direct sunlight or near motors and other electrical equipment that may generate ozone, as this degrades NBR elastomers over time.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 16.375 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: 385\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\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: ZMSCH70385\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51972191748402,"sku":"ZMSCH70385","price":21.58,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d07c30dd8efcd500b8bb1759bdfbae86_1d919c69-06f3-4e60-93b1-1b290bc76eb0.jpg?v=1789964060","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70385-o-ring-dash-385-buna-n-70a","provider":"Voomi Supply","version":"1.0","type":"link"}