{"product_id":"mr-o-ring-433-viton-o-ring-90a-durometer-5-1-2in-id-pack-of-5","title":"Mr O-Ring 433 Viton O-Ring 90A Durometer 5-1\/2in ID Pack of 5","description":"\u003cp\u003eIn this review the Mr O-Ring 433 Viton o-ring is evaluated for workshop and industrial sealing tasks where temperature resistance and chemical compatibility matter most. The bottom line: this pack of five 90A durometer Viton o-rings is best for technicians and DIYers who need durable seals that resist fuels, oils and high temperatures; the single biggest reason to buy is the combination of a high-performance FKM compound and accurate dimensions that fit AS568 sizing standards.\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 excellent resistance to fuels, mineral oils, hydraulic fluids and many organic solvents for long-lasting seals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e The 90A hardness offers a firm cross-section that holds shape under compression and performs well across a wide temperature range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -26C (-15F) to 232C (450F), allowing use in high-temperature air or fluid environments without rapid degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Nominal 5-1\/2in ID, 6in OD and 1\/4in cross-section with actual measured dimensions close to spec for reliable fitment in standard AS568 grooves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical compatibility:\u003c\/strong\u003e Performs well with petroleum products, methanol\/ethanol blends, diesel\/biodiesel, silicone greases and many acids for broad application use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack size:\u003c\/strong\u003e Supplied as a pack of five so small maintenance jobs or multiple assemblies can be completed without ordering single pieces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 433 Viton o-ring is aimed at mechanics, maintenance technicians and hobbyists who need a small set of robust seals for fuel systems, hydraulic lines, pumps or other equipment exposed to oils and high temperatures. Its 90A hardness and FKM chemistry suit applications where a firmer seal is preferred and chemical resistance is required.\u003c\/p\u003e\n\u003cp\u003eThose who need extremely soft, low-pressure seals or specialized elastomers for very low-temperature service should look elsewhere; silicone or nitrile compounds with different durometers are better choices for soft sealing or cryogenic conditions.\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 resistance from Viton means longevity in fuel and oil applications.\u003c\/li\u003e\n\u003cli\u003eWide operating temperature range supports both elevated heat and moderately cold environments.\u003c\/li\u003e\n\u003cli\u003eAccurate actual dimensions (5.475in ID, 6.025in OD, 0.275in CS) make installation predictable in AS568 sized grooves.\u003c\/li\u003e\n\u003cli\u003ePack of five is convenient for repairs and spares without excess waste.\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 very low-pressure or delicate interfaces compared with softer o-rings.\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 ID\u003c\/td\u003e\n\u003ctd\u003e5-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual ID\u003c\/td\u003e\n\u003ctd\u003e5.475 in (139.07 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal OD\u003c\/td\u003e\n\u003ctd\u003e6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual OD\u003c\/td\u003e\n\u003ctd\u003e6.025 in (153.05 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross-section\u003c\/td\u003e\n\u003ctd\u003e1\/4 in (0.275 in actual, 6.99 mm)\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\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mr O-Ring 433 Viton 90A pack of five is a practical choice for professionals and home mechanics who need chemically resistant, heat-tolerant seals in standard AS568 sizes. Its accurate dimensions and robust FKM compound deliver reliable performance and good value for maintenance and repair tasks where durability matters most.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan these o-rings handle fuel and oil exposure?\u003c\/strong\u003e\u003cbr\u003eYes, Viton (FKM) is specifically resistant to petroleum products, diesel blends and many mineral oils, making these o-rings suitable for fuel and oil-exposed seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the 90A hardness work for my application?\u003c\/strong\u003e\u003cbr\u003eThe 90A durometer is relatively firm and is ideal for applications requiring shape retention and high-temperature stability; choose a softer compound if you need low-pressure conforming seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the dimensions reliable for standard replacement?\u003c\/strong\u003e\u003cbr\u003eYes, the product lists both nominal and actual dimensions that align with AS568 sizing, so these should fit standard grooves specified for a 5-1\/2in ID \/ 6in OD o-ring.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48258016477403,"sku":"B07R751HQK","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_57d0f233-394d-4cb8-af94-d9b7ff1f3894.jpg?v=1778301460","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-433-viton-o-ring-90a-durometer-5-1-2in-id-pack-of-5","provider":"GearMustHave","version":"1.0","type":"link"}