{"product_id":"value-collection-zmsch90250-o-ring-dash-250-buna-n","title":"Value Collection ZMSCH90250 O-ring Dash 250 Buna-n","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH90250 is a Dash 250 Buna-N (Nitrile Butadiene Rubber) O-ring designed for static and dynamic sealing applications across plumbing, hydraulic, pneumatic, and fluid-handling systems. It measures 5 inches inside diameter, 5.25 inches outside diameter, and 0.125 inches thick with a round cross section. Rated at 90 durometer (extra hard), it delivers firm compression set resistance along with strong tear and abrasion resistance. The operating temperature range spans -40 degrees F to 250 degrees F, making it suitable for a broad range of service environments. Licensed plumbers, pipefitters, and maintenance technicians install this O-ring where a reliable petroleum-compatible seal is required.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is suited for residential and commercial sealing applications involving petroleum-based fluids, oils, fuels, and hydraulic media. Its Buna-N elastomer compound is the most widely used O-ring material in trade service, particularly in valve bodies, pump housings, fittings, cylinders, and pipe unions. It conforms to SAE and MIL-Spec standards, which makes it appropriate for demanding industrial and mechanical service installations. The Dash 250 designation is a standard AS568 cross-reference size, simplifying drop-in replacement sourcing across common hardware and fitting platforms.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) compound with excellent resistance to petroleum products, oils, and fuels\u003c\/li\u003e\n  \u003cli\u003e90 durometer extra-hard rating provides firm compression set and strong abrasion resistance\u003c\/li\u003e\n  \u003cli\u003eOperating range of -40 degrees F to 250 degrees F suits a wide variety of service conditions\u003c\/li\u003e\n  \u003cli\u003eRound cross section, 0.125 inches thick, conforms to standard Dash 250 AS568 sizing\u003c\/li\u003e\n  \u003cli\u003eMeets SAE and MIL-Spec standards\u003c\/li\u003e\n  \u003cli\u003eBlack color; sold in packages of 25 units\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with petroleum products, hydraulic oils, fuels, and related media. Designed as a standard Dash 250 O-ring replacement for valves, pumps, fittings, cylinders, and other fluid-handling components that specify a Buna-N seal at this cross-section size. Not recommended for applications involving ozone, direct sunlight exposure, or equipment that generates ozone such as electric motors.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by licensed plumbers, pipefitters, hydraulic technicians, or qualified maintenance personnel. Depressurize and drain the system fully before removing any fittings or housings containing this O-ring. Lubricate the O-ring with a compatible petroleum-based or system-fluid lubricant before seating to prevent tearing during assembly. Do not store O-rings in direct sunlight or near motors or other electrical equipment that may generate ozone, as this degrades the elastomer over time.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Buna-N (Nitrile Butadiene Rubber)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 250\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 5 inches (126.59 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5.25 inches (133.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches (3.53 mm)\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: 90 durometer (Extra 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\u003eFDA Approved\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: SAE, MIL-Spec\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: 1.33 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: ZMSCH90250\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51701060043058,"sku":"ZMSCH90250","price":22.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_66915694-0501-43cc-91fd-b1dda1790aa9.jpg?v=1788397628","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90250-o-ring-dash-250-buna-n","provider":"Voomi Supply","version":"1.0","type":"link"}