{"product_id":"value-collection-zmscs70253-silicone-o-ring-dash-253-5-pack","title":"Value Collection ZMSCS70253 Silicone O-ring Dash 253 5-pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION ZMSCS70253 is a silicone O-ring with a round cross section, designed for static and dynamic sealing applications across a wide range of operating temperatures. It measures 5.375 inches inside diameter, 5.625 inches outside diameter, and 0.125 inches thick, conforming to Dash 253 sizing. With a Shore A hardness rating of 70 and a working temperature range of -80 degrees F to 450 degrees F, this O-ring is suited for environments that demand dry heat resistance and reliable weather and ozone resistance. It is installed by plumbers, HVAC technicians, maintenance mechanics, and industrial service technicians.\u003c\/p\u003e\u003cp\u003eThis O-ring is commonly used in fluid handling systems, HVAC equipment, chemical processing lines, and general industrial machinery where a large-diameter seal is required. The silicone compound offers good resistance to oils, chemicals, and solvents, though oil resistance is limited compared to nitrile-based alternatives. It is a practical choice for sealing flanges, housings, and access covers in both residential and commercial service environments. Sold in a package of 5.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSilicone compound with a wide temperature range from -80 degrees F to 450 degrees F\u003c\/li\u003e\n\u003cli\u003eRound cross section in Dash 253 sizing for standardized fitment\u003c\/li\u003e\n\u003cli\u003eShore A hardness of 70 for firm, reliable sealing compression\u003c\/li\u003e\n\u003cli\u003eGood resistance to weather and ozone degradation\u003c\/li\u003e\n\u003cli\u003eCompatible with oils, chemicals, and solvents; note limited oil resistance relative to nitrile\u003c\/li\u003e\n\u003cli\u003eSold as a pack of 5 units\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard Dash 253 O-ring replacement for any application requiring a 5.375-inch ID silicone seal, including HVAC equipment housings, plumbing flanges, and industrial fluid system components.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eShut off fluid flow and relieve system pressure before removing the existing O-ring. Clean the groove and mating surfaces thoroughly before seating the new ring to prevent rolling or uneven compression. Avoid using petroleum-based lubricants on silicone O-rings; use a silicone-compatible lubricant if lubrication is required. Follow applicable codes such as the IPC or IFGC for plumbing and gas system sealing applications.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 5.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 253\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: Silicone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShore A Hardness\u003c\/strong\u003e: 70 (Hard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Working Temperature\u003c\/strong\u003e: -80 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature\u003c\/strong\u003e: 450 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible With\u003c\/strong\u003e: Oils, Chemicals, Solvents\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: 5\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: ZMSCS70253\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51689285648690,"sku":"ZMSCS70253","price":19.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d07c30dd8efcd500b8bb1759bdfbae86_b209febb-e267-4a2d-913a-0b0601447bcd.jpg?v=1788256820","url":"https:\/\/voomisupply.com\/products\/value-collection-zmscs70253-silicone-o-ring-dash-253-5-pack","provider":"Voomi Supply","version":"1.0","type":"link"}