{"product_id":"mr-o-ring-320-viton-o-ring-90a-1-1-8in-id-1-1-2in-od-pack-of-25","title":"Mr O-Ring 320 Viton O-Ring 90A 1-1\/8in ID 1-1\/2in OD - Pack of 25","description":"\u003cp\u003eIn this review the Mr O-Ring 320 Viton O-Ring pack is assessed for technicians, hobbyists and maintenance professionals who need reliable seals for fuel, oil and high-temperature applications. The bottom line: this pack of 25 offers a durable, high-hardness Viton compound with a 90A durometer that stands up to heat, petroleum and many chemicals, making it a practical choice when material resistance and consistent sizing matter. If long service life in harsh environments is your priority, this review explains why these o-rings are worth considering.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made from Viton (fluorocarbon rubber), these o-rings deliver excellent resistance to fuels, mineral oils and many organic solvents, which reduces frequent replacement in harsh fluids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e The 90A hardness provides a firm seal that resists extrusion and deformation, useful where a tighter, more durable seal is required under pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -26C to 232C (-15F to 450F), they tolerate very high operating temperatures and remain useful across wide environmental conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize accuracy:\u003c\/strong\u003e Nominal and actual dimensions are provided (nominal 1-1\/8in ID, 1-1\/2in OD; actual 1.100in ID, 1.520in OD), helping installers match existing grooves and avoid fitment surprises.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack size:\u003c\/strong\u003e Supplied as a pack of 25, this quantity is convenient for repeat maintenance tasks or stocking common service items without buying single units repeatedly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product suits industrial maintenance crews, small engine mechanics and plumbing professionals who need o-rings that resist petroleum, diesel blends, hydraulic fluids and elevated temperatures. The 90A hardness and Viton compound are particularly appropriate where chemical resistance and reduced swelling are required.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include applications requiring very soft seals (lower durometer) or food- or medical-grade elastomers, since Viton 90A is optimized for chemical and temperature performance rather than ultra-soft sealing or regulated sanitary uses.\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 from the Viton material reduces degradation in harsh fluids.\u003c\/li\u003e\n\u003cli\u003e90A durometer offers reliable firmness and durability under compression and repeated cycles.\u003c\/li\u003e\n\u003cli\u003ePack of 25 gives good value for routine maintenance and multiple repairs.\u003c\/li\u003e\n\u003cli\u003eActual and metric dimensions are listed for accurate compatibility checks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher durometer means less flexibility for applications that need a very soft, conforming seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMr O-Ring\u003c\/td\u003e\n\u003c\/tr\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\u003e1-1\/8in ID, 1-1\/2in OD, 3\/16in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual dimensions\u003c\/td\u003e\n\u003ctd\u003e1.100in ID, 1.520in OD, 0.210in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric dimensions\u003c\/td\u003e\n\u003ctd\u003e27.94 mm ID, 38.60 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 to 232C (-15F to 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 320 Viton 90A pack is a sensible buy for professionals who need chemically resistant, high-temperature o-rings in a reliable size and quantity. Its combination of \u003cstrong\u003eViton material\u003c\/strong\u003e, clear actual dimensions and a useful pack size make it good value for industrial and automotive maintenance where durability matters.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these o-rings suitable for fuel systems?\u003c\/strong\u003e\u003cbr\u003eYes. The Viton compound is formulated to perform well with petroleum, fuel blends and diesel applications that require chemical resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the 90A hardness seal under high pressure?\u003c\/strong\u003e\u003cbr\u003eThe 90A durometer offers a firmer seal that resists extrusion; it is suitable for many pressurized seals but confirm groove clearance and application specifics before use.\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) to 232C (450F), making them appropriate for very high temperature exposure typical in engines and industrial equipment.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48255977226459,"sku":"B07R542NHP","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_21e2ba5c-bdde-46ed-a9fa-ace6749206bb.jpg?v=1778348002","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-320-viton-o-ring-90a-1-1-8in-id-1-1-2in-od-pack-of-25","provider":"GearMustHave","version":"1.0","type":"link"}