{"product_id":"mr-o-ring-448-viton-o-ring-90a-durometer-9-1-2-in-id-pack-of-10","title":"Mr O-Ring 448 Viton O-Ring 90A Durometer - 9-1\/2 in ID Pack of 10","description":"\u003cp\u003eIn this review the focus is on a workhorse sealing option for industrial and plumbing needs: the Mr O-Ring 448 Viton O-Ring in a pack of 10. The bottom line is simple - this is for anyone who needs a reliable, high-temperature resistant o-ring that stands up to fuels, oils and harsh environments. The review highlights the o-ring's core strength: a 90A durometer \u003cstrong\u003eViton (FKM)\u003c\/strong\u003e compound that delivers broad chemical compatibility and a wide operating temperature range, making it a sensible choice for maintenance shops, equipment rebuilds, and fluid-handling systems.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial and Hardness:\u003c\/strong\u003e Made from 90A durometer \u003cstrong\u003eViton (FKM)\u003c\/strong\u003e, the compound offers strong resistance to high temperature, ozone and many chemicals, improving seal longevity in demanding conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize Accuracy:\u003c\/strong\u003e Nominal 9-1\/2 in ID and 10 in OD with actual dimensions very close to spec, which helps installers get correct fits without guesswork.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Rated -26C (-15F) to 232C (450F), so the o-ring works across low-temperature storage and very high operating temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Compatibility:\u003c\/strong\u003e Performs well in petroleum products, diesel, biodiesel blends, methanol and ethanol blends, and many oils and solvents, reducing seal failure risk in fuel and lubrication systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Size:\u003c\/strong\u003e Supplied as a pack of 10, which suits technicians and shops that need multiple replacements on hand and reduces frequent reordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis o-ring is aimed at professionals and advanced DIY users who repair or maintain engines, pumps, valves and hydraulic components that see fuel, oil and high heat. The combination of \u003cstrong\u003eViton chemical resistance\u003c\/strong\u003e and a 90A hardness makes it appropriate where fuels, hydraulic fluids or high-temperature air are present.\u003c\/p\u003e\u003cp\u003eUsers who need soft seals for very light compression or food-grade elastomers should look elsewhere, since this product is a harder 90A industrial Viton and is not specified for food-contact or very low-pressure sealing where a softer rubber is required.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eExcellent resistance to fuels, oils and many solvents due to the \u003cstrong\u003eViton (FKM)\u003c\/strong\u003e compound.\u003c\/li\u003e\n\u003cli\u003eWide operating temperature range suitable for high-heat applications.\u003c\/li\u003e\n\u003cli\u003ePack of 10 provides practical value for maintenance and replacement cycles.\u003c\/li\u003e\n\u003cli\u003eActual dimensions closely match nominal sizes for predictable installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e90A hardness may be too firm for applications needing very soft or highly conforming seals.\u003c\/li\u003e\n\u003cli\u003eNot indicated for food-grade use or certain specialty chemical exposures not listed in the specification.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMr O-Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eViton (FKM), 90A durometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Dimensions\u003c\/td\u003e\n\u003ctd\u003e9-1\/2 in ID, 10 in OD, 1\/4 in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Dimensions\u003c\/td\u003e\n\u003ctd\u003e9.475 in ID, 10.025 in OD, 0.275 in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric Dimensions\u003c\/td\u003e\n\u003ctd\u003e240.67 mm ID, 254.65 mm OD, 6.99 mm CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-26C (-15F) to 232C (450F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e10 o-rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eFor maintenance pros and technicians who need a durable, high-temperature resistant sealing solution, the Mr O-Ring 448 in 90A Viton offers dependable chemical resistance and size accuracy at a reasonable value, especially in the pack-of-10 format. It is a practical buy when fuel and oil compatibility and high-temperature performance are priorities.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan these o-rings handle diesel and biodiesel blends?\u003c\/strong\u003e\u003cbr\u003eYes. The Viton compound is specified to perform well in diesel and blends with biodiesel, as well as petroleum-based fuels.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the actual dimensions reliable for replacement parts?\u003c\/strong\u003e\u003cbr\u003eYes. The product lists both nominal and actual dimensions, and the actual measurements closely match the nominal sizes for predictable fitting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature extremes are supported?\u003c\/strong\u003e\u003cbr\u003eThe o-ring is rated from -26C (-15F) up to 232C (450F), suitable for many low-temperature storage and very high operating temperature applications.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48264666185947,"sku":"B07R43KH2J","price":201.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_ff1f289e-4a24-45dc-8359-fbd3b8f7aff2.jpg?v=1778321222","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-448-viton-o-ring-90a-durometer-9-1-2-in-id-pack-of-10","provider":"GearMustHave","version":"1.0","type":"link"}