{"product_id":"value-collection-zmsch70344-o-ring-dash-344-nitrile-nbr-70","title":"Value Collection ZMSCH70344 O-ring Dash 344 Nitrile Nbr 70","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH70344 is a Dash 344 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in industrial and trade sealing applications. It features a 3.875-inch inside diameter, a 4.25-inch outside diameter, and a 0.1875-inch round cross section with a 70-durometer hardness rating. This O-ring delivers excellent resistance to petroleum-based fluids, strong compression set performance, and good tear and abrasion resistance. It is installed by HVAC technicians, plumbers, and mechanical service professionals wherever a reliable static or dynamic petroleum-resistant seal is required.\u003c\/p\u003e\u003cp\u003eThis O-ring is suited for use in hydraulic systems, fuel handling equipment, plumbing assemblies, and HVAC applications where contact with petroleum products is expected. Its Buna-N compound performs across a wide service temperature range, making it a practical choice for both residential and light commercial mechanical systems. Sold in a package quantity of 25, it is well suited for shop stocking and service vehicle inventory. Note that this compound should not be stored in direct sunlight or near motors and electrical equipment that may generate ozone.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBuna-N (Nitrile Butadiene Rubber) compound offers excellent petroleum product resistance\u003c\/li\u003e\n\u003cli\u003e70-durometer hardness rating with round cross section geometry\u003c\/li\u003e\n\u003cli\u003eService temperature range from -40 degrees F to 250 degrees F\u003c\/li\u003e\n\u003cli\u003eExcellent compression set, tear resistance, and abrasion resistance\u003c\/li\u003e\n\u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n\u003cli\u003ePackage quantity of 25 units per order\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard Dash 344 O-ring replacement compatible with petroleum-based fluid systems including hydraulic, fuel, and general plumbing assemblies where Buna-N elastomer is the specified compound.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified technician familiar with sealing system service procedures. Always depressurize and shut down the system before replacing O-rings. Lubricate the O-ring with a compatible fluid or grease prior to installation to prevent nicking or tearing during seating. Avoid twisting the O-ring during installation, and inspect the groove and mating surfaces for damage before reassembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 3.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 4.25 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: 344\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 durometer (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: 25\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\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: ZMSCH70344\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51692644499762,"sku":"ZMSCH70344","price":15.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e8e0c5929c0ec00a7f7971971cc6101e.jpg?v=1788300498","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70344-o-ring-dash-344-nitrile-nbr-70","provider":"Voomi Supply","version":"1.0","type":"link"}