{"product_id":"mr-o-ring-448-viton-o-ring-90a-durometer-9-1-2in-id-durable-seal","title":"Mr O-Ring 448 Viton O-Ring 90A Durometer 9-1\/2in ID - Durable Seal","description":"\u003cp\u003eIn this review the Mr O-Ring 448 Viton O-Ring is presented as a straightforward replacement seal for demanding applications; it is best for technicians, maintenance pros, and hobbyists who need a heat- and chemical-resistant o-ring in the AS568 size range. The single biggest reason to buy is its high-performance Viton (FKM) compound with a 90A durometer that resists fuels, oils, ozone and high temperatures up to 232C, making it a reliable choice where lesser elastomers fail.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton (fluorocarbon rubber) delivers wide chemical resistance for use with petroleum products, fuels, mineral oils and many organic solvents.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -26C to 232C, it tolerates very high operating temperatures and maintains seal integrity where heat resistance is required.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e The 90A durometer provides a firm, durable seal that resists extrusion and deformation under pressure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSize accuracy:\u003c\/strong\u003e Nominal and actual dimensions are closely matched (9-1\/2in ID nominal, actual 9.475in ID) for reliable interchange into AS568-compliant grooves and hardware.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVersatility:\u003c\/strong\u003e Performs well in environments including high vacuum, ozone, weathering and when exposed to alcohol blends like methanol or ethanol.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eShelf-life:\u003c\/strong\u003e Essentially unlimited shelf-life makes it practical to keep spares on hand without concern for material aging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis o-ring is aimed at maintenance technicians, industrial users and DIYers who need a single, dependable seal that resists fuels, oils and elevated temperatures. Its AS568-compliant sizing and tight actual dimensions make it suitable for replacing worn seals in pumps, fuel systems, hydraulic equipment and high-temp enclosures.\u003c\/p\u003e\n\u003cp\u003eThose who need softer sealing compounds for very low-pressure or softer-mating surfaces should consider lower durometer elastomers, and users with specific food-grade or medical certifications should confirm compatibility since this is an industrial Viton FKM product.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eExcellent chemical and heat resistance, suitable for fuels, oils and high-temp applications.\u003c\/li\u003e\n \u003cli\u003eFirm 90A durometer reduces risk of extrusion and provides long-term sealing under pressure.\u003c\/li\u003e\n \u003cli\u003eAccurate actual dimensions (9.475in ID, 10.025in OD) fit AS568 size expectations for straightforward replacement.\u003c\/li\u003e\n \u003cli\u003eUnlimited shelf-life means spares remain usable without special storage concerns.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eThe 90A hardness may be too stiff for delicate or ultra-low-pressure seals that require a softer material.\u003c\/li\u003e\n \u003cli\u003eNot positioned as a certified food- or medical-grade product; users with those needs should verify suitability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\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)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eDurometer\u003c\/td\u003e\n\u003ctd\u003e90A\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNominal dimensions\u003c\/td\u003e\n\u003ctd\u003e9-1\/2in ID, 10in OD, 1\/4in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eActual dimensions\u003c\/td\u003e\n\u003ctd\u003e9.475in ID, 10.025in OD, 0.275in 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\u003eShelf-life\u003c\/td\u003e\n\u003ctd\u003eUnlimited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor anyone needing a durable, high-temperature replacement o-ring in the AS568 size range, the Mr O-Ring 448 Viton 90A is a sensible choice. Its combination of chemical resistance, accurate sizing and firm durometer makes it good value for industrial and maintenance use where longevity and heat tolerance matter.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this o-ring compatible with gasoline and diesel?\u003c\/strong\u003e\u003cbr\u003eYes, the Viton FKM compound is formulated to resist petroleum products including gasoline, diesel and many fuel blends.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the 90A hardness work for hydraulic applications?\u003c\/strong\u003e\u003cbr\u003eThe 90A durometer provides a firm seal that is suitable for many hydraulic and high-pressure uses, though very low-pressure systems may prefer a softer compound.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the dimensions exact for replacement?\u003c\/strong\u003e\u003cbr\u003eThe actual dimensions are listed (9.475in ID, 10.025in OD, 0.275in CS) and closely match the nominal 9-1\/2in ID size for reliable interchange.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48243260850395,"sku":"B07R721VGC","price":34.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_65801857-8286-4f6c-ba5e-3b7137d566b9.jpg?v=1770968100","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-448-viton-o-ring-90a-durometer-9-1-2in-id-durable-seal","provider":"GearMustHave","version":"1.0","type":"link"}