{"product_id":"value-collection-zmsch70242-o-ring-dash-242-buna-n-pack-of-50","title":"Value Collection ZMSCH70242 O-ring Dash 242 Buna-n Pack of 50","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70242 is a Dash 242 Buna-N (Nitrile Butadiene Rubber) O-ring with a round cross section, designed for sealing applications across plumbing, HVAC, and fluid-handling systems. It measures 4 inches inside diameter, 4.25 inches outside diameter, and 0.125 inches thick. With a Shore A hardness of 70, this O-ring provides a firm, reliable seal under compression. The material offers excellent resistance to petroleum-based fluids, strong compression set performance, and good tear and abrasion resistance. Rated for service from -40 degrees F to 250 degrees F, it suits a broad range of temperature environments encountered in mechanical trade work.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is commonly used in pumps, valves, pipe fittings, and fluid-transfer equipment where petroleum-based media compatibility is required. It is appropriate for residential and light commercial HVAC, plumbing, and pool equipment service. The Dash 242 designation corresponds to a widely standardized size, making it a routine replacement in many service scenarios. Each order is fulfilled in a package quantity of 50 units, well suited for service contractors who stock common O-ring sizes in their field inventory.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N elastomer with excellent resistance to petroleum products, oils, and fuels\u003c\/li\u003e\n  \u003cli\u003eRound cross section, 0.125 inches thick, Dash 242 standard size\u003c\/li\u003e\n  \u003cli\u003e70 Shore A hardness rating for firm compression sealing\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range: -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003eSold in a package of 50 units to support high-volume service work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum-based products and related fluid systems. Designed as an OEM-style replacement O-ring for any application requiring a Dash 242 Buna-N seal with a 4-inch inside diameter and 0.125-inch cross section thickness.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed plumbers, HVAC technicians, or pool service professionals depending on the application. Always depressurize and isolate the system before removing or installing O-rings. Inspect the groove and mating surfaces for damage or debris before seating the new O-ring. Avoid storing unused O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as this can degrade the elastomer 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: 4 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: 0.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 242\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 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\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  \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: ZMSCH70242\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51723480170802,"sku":"ZMSCH70242","price":17.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8e09fa2b5526edb1e7ee3000a948a7ce.jpg?v=1788605383","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70242-o-ring-dash-242-buna-n-pack-of-50","provider":"Voomi Supply","version":"1.0","type":"link"}