{"product_id":"mr-o-ring-447-viton-o-ring-90a-durometer-9-in-id-pack-of-10","title":"Mr O-Ring 447 Viton O-Ring 90A Durometer, 9 in ID - Pack of 10","description":"\u003cp\u003eIn this review the Mr O-Ring 447 Viton O-Ring pack is evaluated for professionals and DIYers who need high-temperature and chemical-resistant seals. The bottom line: this set of ten 90A durometer Viton o-rings is best for applications exposed to fuels, mineral oils, silicone greases and high heat where long-term stability matters. Its nominal 9 in ID and 1\/4 in cross-section follow common AS568 sizing, and the material properties give confidence in demanding sealing tasks rather than disposable, low-performance uses.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton FKM provides robust resistance to high temperature, ozone and many organic solvents, keeping seals reliable in harsh environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e The 90A hardness balances flexibility and compression resistance, preserving sealing performance under pressure and repeated cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Nominal 9 in ID, 9-1\/2 in OD and 1\/4 in cross-section match AS568 sizing for straightforward replacement and fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -26C to 232C so these o-rings work across low to very high temperature applications without rapid degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical compatibility:\u003c\/strong\u003e Performs well in petroleum, fuels, biodiesel blends, methanol or ethanol blends, and many oils and greases, reducing the need for specialized seals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Sold as a pack of 10, which is practical for maintenance kits or multiple installation points.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product suits maintenance technicians, industrial seal shops, and serious DIYers who replace o-rings in engines, pumps, or hydraulic components where exposure to fuels, oils and elevated temperatures is expected. The 90A durometer and Viton chemistry make it appropriate for applications that demand chemical resistance and dimensional stability.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing food-grade elastomers, extreme low-temperature elastomers beyond the stated range, or softer compound o-rings for very low compression force requirements; this 90A hardness is not ideal for ultra-soft sealing needs.\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\u003eHigh chemical and heat resistance thanks to Fluorocarbon Viton material for long service life in harsh conditions.\u003c\/li\u003e\n\u003cli\u003ePack of 10 provides spare parts for routine maintenance and multiple assemblies.\u003c\/li\u003e\n\u003cli\u003eAS568-compatible nominal sizing simplifies replacement in standard grooves and housings.\u003c\/li\u003e\n\u003cli\u003eWide temperature range supports both elevated and moderate low-temperature operations.\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 durometer is relatively hard, so it may not seal as well in applications that require softer, more conformable o-rings.\u003c\/li\u003e\n\u003cli\u003eNot intended for food-contact or applications requiring specialty non-fluorocarbon materials.\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\u003e9 in ID, 9-1\/2 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\u003e8.975 in ID, 9.525 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\u003e227.97 mm ID, 241.95 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\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mr O-Ring 447 Viton 90A o-ring pack is a practical, cost-effective option for industrial and maintenance users who need reliable chemical and heat resistance. Its AS568-compatible sizing and broad temperature range make it a good value for replacing seals exposed to fuels, oils and high temperatures, while those needing softer or food-safe materials should consider alternatives.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these o-rings compatible with fuel and biodiesel?\u003c\/strong\u003e\u003cbr\u003eYes. The Viton material is specified to perform well with petroleum fuels and diesel blends, including biodiesel mixes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these o-rings meet a standard size?\u003c\/strong\u003e\u003cbr\u003eThe nominal dimensions follow AS568 sizing conventions so they are suitable for common standard grooves and replacement needs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperature range can they handle?\u003c\/strong\u003e\u003cbr\u003eThey are rated from -26C (-15F) up to 232C (450F), suitable for many high-temperature sealing applications.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48262704496859,"sku":"B07R74L97V","price":193.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_cda9021d-3e0d-4564-b821-87701e2db798.jpg?v=1778335791","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-447-viton-o-ring-90a-durometer-9-in-id-pack-of-10","provider":"GearMustHave","version":"1.0","type":"link"}