{"product_id":"mr-o-ring-260-viton-o-ring-90a-durometer-6-1-2-in-id-pack-of-10","title":"Mr O-Ring 260 Viton O-Ring 90A Durometer, 6-1\/2 in ID Pack of 10","description":"\u003cp\u003eIn this review the Mr O-Ring 260 Viton O-Ring is judged as a reliable, application-ready sealing option for technicians and hobbyists who need a small, durable kit of Viton seals. The bottom line: this pack of 10 90A durometer Viton o-rings is best for users who require chemical and high-temperature resistance in a standard AS568 size, because the material and hardness deliver broad compatibility from fuels to silicone oils while holding shape under heat. The review focuses on real-world sealing needs rather than aesthetic packaging or retail extras.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial and resistance:\u003c\/strong\u003e Made from 260 Viton (fluorocarbon rubber), these o-rings resist fuels, oils, aromatics and many chemicals for dependable seals in harsh environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -26C (-15F) to 232C (450F), they handle both low-temperature service and very high temp air applications without rapid degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer hardness:\u003c\/strong\u003e 90A durometer provides a firm sealing surface that maintains integrity under compression and repeated cycles, useful for hydraulic or fuel system fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensional accuracy:\u003c\/strong\u003e Nominal and actual dimensions are provided (6-1\/2 in ID nominal; 6.484 in actual), which helps installers choose a close match for AS568-size replacements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack quantity and shelf life:\u003c\/strong\u003e Supplied as a pack of 10 with effectively unlimited shelf-life, making it practical to stock spares for maintenance or multiple projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe product is aimed at mechanics, maintenance technicians, and DIYers who need a resilient o-ring for petroleum products, fuels blended with methanol or ethanol, diesel or biodiesel, and many oils and greases. It is also a good choice for systems exposed to ozone, weather, or elevated temperatures where a standard elastomer would fail.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users requiring very soft seals for light compression (lower durometer than 90A) or applications that demand food-grade or potable-water certification, since this is an industrial-grade Viton o-ring intended for chemical and high-temp resistance rather than regulatory drinking-water use.\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 compatibility with fuels, oils, hydraulic fluids and many solvents due to the fluorocarbon formulation.\u003c\/li\u003e\n\u003cli\u003eHigh temperature tolerance up to 232C (450F) for applications subjected to heat or hot air.\u003c\/li\u003e\n\u003cli\u003eAccurate sizing with both nominal and actual dimensions listed, easing replacement of AS568 sizes.\u003c\/li\u003e\n\u003cli\u003eSupplied as a pack of 10 and stable on the shelf, suitable for maintenance inventories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAt 90A hardness the o-ring is relatively firm, which may not seal optimally in low-pressure or delicate soft-seal requirements.\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\u003e260 Viton (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\u003e6-1\/2 in ID, 6-3\/4 in OD, 1\/8 in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual dimensions\u003c\/td\u003e\n\u003ctd\u003e6.484 in ID, 6.762 in OD, 0.139 in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric dimensions\u003c\/td\u003e\n\u003ctd\u003e164.69 mm ID, 171.75 mm OD, 3.53 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\u003e10 o-rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mr O-Ring 260 Viton 90A o-ring pack is a practical, value-minded choice for professionals and hobbyists who need robust chemical and high-temperature resistance in a standard AS568 size. It is especially useful for fuel, oil and high-temp sealing tasks where durability matters, though users needing softer, low-pressure seals or specific potable-water approvals should consider alternatives.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these o-rings compatible with gasoline and diesel?\u003c\/strong\u003e\u003cbr\u003eYes. The Viton formulation is designed to perform well with petroleum products, gasoline blends and diesel, including some biodiesel blends.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the 90A hardness work for static and dynamic seals?\u003c\/strong\u003e\u003cbr\u003e90A is suitable for many static and some dynamic sealing applications; it provides firm compression resistance but may be less ideal where a very soft, low-pressure seal is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these o-rings have an expiration date?\u003c\/strong\u003e\u003cbr\u003eNo. The product is listed with effectively unlimited shelf-life, so they can be stored as spares without a fixed expiration.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48631792206043,"sku":"B07R85M9L1","price":58.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_a0516a46-1a0b-48d5-9f39-6422912dd704.jpg?v=1778512502","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-260-viton-o-ring-90a-durometer-6-1-2-in-id-pack-of-10","provider":"GearMustHave","version":"1.0","type":"link"}