{"product_id":"value-collection-zmsch70240-o-ring-3-75-in-id-nbr-dash-240","title":"Value Collection ZMSCH70240 O-ring 3.75 in Id Nbr Dash 240","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70240 is a Dash 240 Nitrile Butadiene Rubber (NBR) O-ring designed for static and dynamic sealing applications in plumbing, HVAC, and fluid-handling systems. It measures 3.75 inches inside diameter and 4 inches outside diameter with a 0.125-inch round cross section and a Shore hardness of 70. NBR is the most widely used O-ring elastomer due to its excellent resistance to petroleum-based fluids, strong compression set characteristics, and solid tear and abrasion resistance. Licensed trades and maintenance technicians install this type of seal when servicing valves, pumps, fittings, and other fluid-handling components where petroleum product exposure is a factor.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for residential and commercial applications where the sealing environment involves petroleum products, hydraulic fluids, or similar media. It carries ratings for both SAE and MIL-Spec standards, making it appropriate for a broad range of mechanical and fluid-system service work. Operating temperature range spans -40 degrees F to 250 degrees F, covering most HVAC, plumbing, and light industrial service conditions. Sold in a package quantity of 50, this O-ring is practical for stocking service vehicles or shop inventory. Note that NBR should not be stored in direct sunlight or near motors or electrical equipment that may generate ozone.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNitrile Butadiene Rubber (Buna-N) construction — excellent resistance to petroleum products and hydraulic fluids\u003c\/li\u003e\n  \u003cli\u003e3.75 inches ID x 4 inches OD x 0.125 inches thick, Dash 240 sizing\u003c\/li\u003e\n  \u003cli\u003eShore hardness 70 with round cross section for reliable compression set\u003c\/li\u003e\n  \u003cli\u003eOperating range of -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003ePackaged in quantities of 50 for shop or field stocking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum products and similar media. Designed as a standard Dash 240 O-ring replacement suitable for valves, pumps, fittings, and fluid-handling assemblies requiring a 3.75-inch ID NBR seal conforming to SAE and MIL-Spec standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance personnel. Always depressurize and de-energize the system and drain fluid from the affected line or component before removing the existing O-ring. Lubricate the new O-ring with a compatible fluid or O-ring lubricant prior to seating to prevent nicking or rolling during assembly. Do not use petroleum-incompatible lubricants or stretch the O-ring beyond its designed groove dimensions.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Nitrile Butadiene Rubber (Buna-N)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 240\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 3.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Round\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 Media\u003c\/strong\u003e: Petroleum Products\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\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: 50\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: ZMSCH70240\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51713559298354,"sku":"ZMSCH70240","price":16.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b349a8fe5763b28a58bd303b3140a87f.jpg?v=1788494403","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70240-o-ring-3-75-in-id-nbr-dash-240","provider":"Voomi Supply","version":"1.0","type":"link"}