{"product_id":"mr-o-ring-362-viton-o-ring-90a-6-1-4in-id-pack-of-5-high-temp-seal","title":"Mr O-Ring 362 Viton O-Ring 90A, 6-1\/4in ID Pack of 5 - High Temp Seal","description":"\u003cp\u003eIn this review the Mr O-Ring 362 Viton o-ring is evaluated for mechanics, hobbyists and maintenance pros who need a durable, high-temperature seal. The bottom line: this pack of five 90A durometer Viton o-rings stands out for chemical and heat resistance, making it a practical choice where exposure to fuels, oils or high heat is expected. The reviewer found the dimensional accuracy and material properties appropriate for routine service and many industrial sealing tasks.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton (fluorocarbon rubber) provides exceptional resistance to fuels, mineral oils and many organic solvents, so seals last longer in aggressive fluids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 90A durometer gives a firm cross-section that maintains shape under compression while still sealing reliably across a wide temperature range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Rated from -26C to 232C (-15F to 450F), which makes these o-rings suitable for high-temp air and hot fluid applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize Accuracy:\u003c\/strong\u003e Actual dimensions closely match nominal (6.225in ID, 6.645in OD, 0.210in CS) so replacements fit standard grooves specified by size standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e Sold as a pack of 5, offering spare parts for maintenance cycles or multiple assemblies without buying bulk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Compatibility:\u003c\/strong\u003e Performs well with petroleum, diesel\/biodiesel blends, methanol\/ethanol blends and many oils, reducing unexpected failures in mixed-fuel systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is targeted at automotive technicians, equipment maintenance teams, and do-it-yourselfers who need reliable seals in fuel systems, hydraulic lines or high-temperature environments. The 90A hardness and Viton compound suit applications where exposure to fuels, mineral oils and elevated temperatures are common.\u003c\/p\u003e\n\n\u003cp\u003eThose who need very soft or food-grade elastomers, or who require extreme low-temperature flexibility below -26C, should consider alternative materials. Also, if a custom size outside AS568-like ranges is required, a different supplier or custom molding may be necessary.\u003c\/p\u003e\n\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 resistance to fuels, oils and many solvents, reducing swelling and degradation.\u003c\/li\u003e\n\u003cli\u003eHigh temperature tolerance up to 232C (450F) for demanding thermal environments.\u003c\/li\u003e\n\u003cli\u003eAccurate actual dimensions make replacement straightforward for standard grooves and fittings.\u003c\/li\u003e\n\u003cli\u003ePack of five gives immediate spares for maintenance without excess inventory.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e90A hardness is relatively firm and may not seal as well in extremely low-pressure or flimsy-surface applications compared with softer compounds.\u003c\/li\u003e\n\u003cli\u003eViton is not suited for all aggressive chemistries (some perfluorinated solvents may require specialty elastomers).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eViton (Fluorocarbon rubber, 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 Size\u003c\/td\u003e\n\u003ctd\u003e6-1\/4in ID, 6-5\/8in OD, 3\/16in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Size\u003c\/td\u003e\n\u003ctd\u003e6.225in ID, 6.645in OD, 0.210in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric Size\u003c\/td\u003e\n\u003ctd\u003e158.12 mm ID, 168.78 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\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mr O-Ring 362 Viton 90A is a sensible, cost-effective choice for anyone needing reliable seals that resist fuel, oil and high temperatures. It is especially valuable for routine maintenance and repairs where AS568-like sizing and dimensional accuracy matter. For users requiring softer seals or extreme low-temperature flexibility, consider alternate compounds, but for most industrial and automotive sealing tasks this pack offers good value.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these o-rings compatible with diesel and biodiesel?\u003c\/strong\u003e\u003cbr\u003eYes, the Viton compound performs well with diesel and biodiesel blends and resists degradation from mineral oil and fuel exposure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperature range can these o-rings handle?\u003c\/strong\u003e\u003cbr\u003eThey are rated from -26C (-15F) up to 232C (450F), suitable for high-temperature applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo the actual dimensions match the nominal size?\u003c\/strong\u003e\u003cbr\u003eYes, the listed actual dimensions (6.225in ID, 6.645in OD, 0.210in CS) closely match the nominal sizes for proper replacement fit.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48186510901467,"sku":"B07R43K7SW","price":62.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_95772a1b-d5a3-41c8-9c86-d6b79ee64d3d.jpg?v=1769660027","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-362-viton-o-ring-90a-6-1-4in-id-pack-of-5-high-temp-seal","provider":"GearMustHave","version":"1.0","type":"link"}