{"product_id":"value-collection-zmsch70351-o-ring-dash-351-nbr","title":"Value Collection ZMSCH70351 O-ring Dash 351 Nbr","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70351 is a Dash 351 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in sealing applications. It measures 4.75 inches inside diameter, 5.125 inches outside diameter, and 0.1875 inches thick, with a round cross section and a Shore A hardness of 70. Buna-N compound delivers excellent resistance to petroleum-based fluids, strong compression set retention, and solid tear and abrasion resistance. This O-ring is sold in a package quantity of five and is suitable for use across HVAC, plumbing, hydraulic, and fluid-handling systems where petroleum-product exposure is a primary sealing concern.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is used in applications that require a reliable static or dynamic seal in environments with petroleum oils, fuels, or hydraulic fluids. It performs across a service temperature range of -40 degrees F to 250 degrees F, making it appropriate for residential and light commercial mechanical systems. Typical installations include pump housings, valve bodies, pipe fittings, and fluid-system couplings. Licensed plumbers, HVAC technicians, and industrial maintenance professionals commonly specify Buna-N O-rings for these service conditions. Avoid installing this part in applications with ozone, strong oxidizing agents, or aromatic solvent exposure, as Buna-N is not suited for those environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNitrile Butadiene Rubber (Buna-N) construction with excellent petroleum-product resistance\u003c\/li\u003e\n  \u003cli\u003eDash 351 standard sizing: 4.75 inches ID, 5.125 inches OD, 0.1875 inches thick\u003c\/li\u003e\n  \u003cli\u003eShore A hardness of 70 with hard hardness rating for positive sealing under compression\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range of -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eRound cross section for consistent sealing in standard O-ring grooves\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 for use with petroleum products and petroleum-based hydraulic fluids. Compatible with standard Dash 351 O-ring groove dimensions per SAE and MIL-Spec requirements. Not compatible with ozone-generating equipment, aromatic solvents, or strong oxidizing media. Store away from direct sunlight and electrical equipment that may generate ozone.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eO-rings should be installed by a qualified technician familiar with the system being serviced. De-energize, depressurize, and drain the system before replacing any seals. Inspect the mating groove for burrs, scoring, or contamination before installation, and apply a compatible lubricant to ease seating without distorting the ring. Avoid twisting or rolling the O-ring during installation, as this can compromise the seal.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 4.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5.125 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: 351\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 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\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 5\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: ZMSCH70351\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51709528834354,"sku":"ZMSCH70351","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/28d54b6270cd01f5d1a9f3df98b65144.jpg?v=1788457571","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70351-o-ring-dash-351-nbr","provider":"Voomi Supply","version":"1.0","type":"link"}