{"product_id":"334-viton-o-ring-90a-2-5-8in-id-3in-od-pack-of-25-high-temp-seal","title":"334 Viton O-Ring 90A 2-5\/8in ID 3in OD Pack of 25 - High Temp Seal","description":"\u003cp\u003eIn this review the Mr O-Ring 334 Viton O-Ring is evaluated for technicians and DIYers who need reliable, high-temperature sealing in fuel, oil, or chemical environments. The bottom line: this pack of 25 90A durometer fluorocarbon rings is best for routine maintenance and bulk replacement where resistance to heat, fuels and solvents matters most. The reviewer found the material consistent with industry expectations and sized to common AS568 tolerances, making these rings a sensible choice when longevity and chemical resistance are priorities.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton (FKM) delivers excellent resistance to high temperature, ozone, weather and many organic solvents, reducing premature failure in aggressive environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 90A durometer offers a firm sealing surface that holds compression well for static seals while resisting extrusion under moderate pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize accuracy:\u003c\/strong\u003e Nominal and actual dimensions are provided so installers can verify fit; actual dimensions read 2.600in ID and 3.020in OD for reliable replacement matching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide temperature range:\u003c\/strong\u003e Rated from -26C (-15F) to 232C (450F), suitable for applications exposed to very high temperatures or thermal cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical compatibility:\u003c\/strong\u003e Performs well with petroleum, diesel and biodiesel blends, methanol or ethanol blends, mineral oils, silicone fluids and many acids, making it versatile for industrial service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk value:\u003c\/strong\u003e Pack of 25 provides inventory for multiple maintenance cycles or for shops that perform frequent seal replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis Viton o-ring is aimed at maintenance technicians, hydraulic and pneumatic service shops, and industrial users who need a durable seal tolerant of fuels, oils and high temperatures. It is also useful for hobbyists converting equipment to fuel blends or for installations exposed to ozone and weather where a long-lived elastomer is required.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users requiring extreme low-temperature flexibility below -26C or applications demanding a softer durometer for dynamic rotary seals; for those cases a different compound or hardness may be a better match.\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 makes these o-rings dependable in aggressive fluid environments.\u003c\/li\u003e\n\u003cli\u003e90A durometer provides durable sealing and resistance to extrusion for many static sealing tasks.\u003c\/li\u003e\n\u003cli\u003ePack of 25 offers good value for routine maintenance and reduces reorder frequency.\u003c\/li\u003e\n\u003cli\u003eProvided actual dimensions help confirm proper fit before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRelatively hard 90A compound is less suited to very low-temperature flexibility or some dynamic sealing needs.\u003c\/li\u003e\n\u003cli\u003eViton is more costly than general-purpose rubbers, so overkill for non-aggressive environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\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\u003e2-5\/8in ID, 3in OD, 3\/16in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual dimensions\u003c\/td\u003e\n\u003ctd\u003e2.600in ID, 3.020in OD, 0.210in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric dimensions\u003c\/td\u003e\n\u003ctd\u003e66.04 mm ID, 76.70 mm OD, 5.33 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 quantity\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor anyone needing a dependable, high-temperature resistant seal in contact with fuels, oils or many solvents, these 334 Viton o-rings are a pragmatic choice. The 90A hardness and accurate dimensions match common AS568 replacements, and the pack-of-25 format makes them good value for shops and repeat maintenance. Choose a softer compound only if low-temperature elasticity or dynamic shaft sealing is required.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these o-rings suitable for fuel blends containing ethanol?\u003c\/strong\u003e\u003cbr\u003eYes. The Viton compound is stated to perform well with fuels blended with methanol or ethanol and with biodiesel blends.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo the rings meet AS568 sizing?\u003c\/strong\u003e\u003cbr\u003eThey are described as meeting size standards defined by AS568 and actual dimensions are provided to confirm fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the usable temperature range?\u003c\/strong\u003e\u003cbr\u003eThe specified operating range is -26C (-15F) up to 232C (450F), suitable for high-temperature service.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48266239312091,"sku":"B07R7252S1","price":74.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_beaf9871-c9ab-4b77-b1f1-842f033c2fa9.jpg?v=1776385061","url":"https:\/\/gearmusthave.com\/products\/334-viton-o-ring-90a-2-5-8in-id-3in-od-pack-of-25-high-temp-seal","provider":"GearMustHave","version":"1.0","type":"link"}