{"product_id":"value-collection-zmsch90338-o-ring-dash-338-nbr-pack-25","title":"Value Collection ZMSCH90338 O-ring Dash 338 Nbr Pack 25","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCH90338 is a Dash 338 O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 3.125 inches inside diameter, 3.5 inches outside diameter, and 0.1875 inches in cross-section thickness. The durometer rating is 90, placing it in the extra-hard hardness category. This O-ring is designed to maintain a reliable seal under compression in hydraulic, pneumatic, and fluid-handling systems. It is sold in a package quantity of 25 and is appropriate for plumbing, HVAC, and industrial maintenance professionals who require a standard Dash 338 sealing element.\u003c\/p\u003e\u003cp\u003eThis O-ring is suited for use in residential and commercial applications where petroleum-based fluids are present, including hydraulic systems, fuel handling equipment, and general fluid control assemblies. The Buna-N compound delivers strong resistance to petroleum products, oils, and fuels. It operates reliably across a temperature range of -40 degrees F to 250 degrees F, making it appropriate for a broad range of service conditions encountered in mechanical and trade service work. The black round cross-section profile fits standard Dash 338 grooves per SAE and MIL-Spec dimensional standards.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBuna-N (Nitrile Butadiene Rubber) construction offers excellent resistance to petroleum products, oils, and fuels\u003c\/li\u003e\n\u003cli\u003eExtra-hard 90 durometer rating provides strong compression set resistance and reduced extrusion risk\u003c\/li\u003e\n\u003cli\u003eOperating temperature range of -40 degrees F to 250 degrees F suits a wide range of service environments\u003c\/li\u003e\n\u003cli\u003eRound cross-section profile conforms to SAE and MIL-Spec dimensional standards for Dash 338 O-rings\u003c\/li\u003e\n\u003cli\u003eTear and abrasion resistance supports durability in high-cycle or high-pressure applications\u003c\/li\u003e\n\u003cli\u003eSold in a pack of 25 for maintenance stock or multi-unit service work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard Dash 338 O-ring replacement compatible with petroleum-based fluid systems. Not recommended for use with ozone-generating environments, direct sunlight exposure, or applications requiring FDA-approved materials, as this part is not FDA approved.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified plumber, HVAC technician, or mechanical trade professional. Always depressurize and drain the system before removing the existing O-ring to prevent fluid release or injury. Inspect the mating groove for damage, contamination, or wear before seating the new O-ring. Avoid storing Buna-N O-rings near motors, electrical equipment, or direct sunlight, as ozone and UV exposure can degrade the elastomer over time.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 338\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 3.125 inches (78.74 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 3.5 inches (88.90 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1875 inches (5.33 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: 1.95 pounds\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: ZMSCH90338\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51714522743090,"sku":"ZMSCH90338","price":19.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e63e5be40384736fb1f090e4d0cdd585_dabc4e3e-5cbc-42c1-900b-11efc031f7d1.jpg?v=1788502681","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch90338-o-ring-dash-338-nbr-pack-25","provider":"Voomi Supply","version":"1.0","type":"link"}