{"product_id":"mr-o-ring-376-viton-o-ring-90a-durometer-9-3-4-in-id-pack-of-5","title":"Mr O-Ring 376 Viton O-Ring 90A Durometer 9-3\/4 in ID Pack of 5","description":"\u003cp\u003eIn this review the Mr O-Ring 376 Viton O-Ring is assessed for workshop and industrial sealing tasks where high temperature and chemical resistance matter. The bottom line: this pack of five black, 90A durometer Viton o-rings is most useful for service technicians and maintenance professionals who need dependable seals for fuel, oil, and high-temperature applications. Its largest selling point is the material performance - Viton (FKM) that tolerates elevated temperatures and a wide range of fluids while matching common AS568 sizing for easy replacement.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton (fluorocarbon rubber) offers strong resistance to high temperature and many chemicals, making these o-rings reliable in harsh environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e The 90A hardness provides a firm seal that resists extrusion and deformation under pressure, useful for static and some dynamic applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Nominal 9-3\/4 in ID and 10-1\/8 in OD with 3\/16 in cross-section ensures compatibility with components sized to AS568 standards for straightforward replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -26C (-15F) to 232C (450F), these o-rings can be used in both cold startup and sustained high-temperature service without rapid deterioration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical resistance:\u003c\/strong\u003e Performs well with petroleum fuels, diesel and biodiesel blends, mineral oils, greases, and many solvents, reducing the need for frequent part changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack size:\u003c\/strong\u003e Supplied as a pack of five which helps fleets and maintenance shops keep spares on hand and reduce downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThese Viton o-rings are aimed at professionals maintaining engines, pumps, and hydraulic systems where exposure to fuels, oils, and heat is routine. They suit technicians replacing worn seals on flanges, connectors, or housings sized to AS568 376 dimensions who want a durable material choice over general-purpose elastomers.\u003c\/p\u003e\n\u003cp\u003eThose working exclusively with aggressive fluorinated chemicals outside Viton's compatibility range or applications requiring extreme flexibility at very low temperatures should consider specialty elastomers instead. Hobbyists needing inexpensive general-purpose seals for non-critical projects might find the material cost overkill.\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 high-temperature performance and long-term resistance to ozone and weather.\u003c\/li\u003e\n\u003cli\u003eWide chemical compatibility with fuels, oils, greases, and many solvents improves durability in service.\u003c\/li\u003e\n\u003cli\u003eAS568-compatible sizing and a pack of five make replacements straightforward and economical for shops.\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 and Viton material make these firmer and potentially less forgiving in very low-temperature or highly dynamic sealing applications.\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\u003e9-3\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal OD\u003c\/td\u003e\n\u003ctd\u003e10-1\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal CS\u003c\/td\u003e\n\u003ctd\u003e3\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Dimensions\u003c\/td\u003e\n\u003ctd\u003e9.725 in ID, 10.145 in OD, 0.210 in 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\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mr O-Ring 376 Viton o-ring is a smart choice for maintenance professionals who need reliable, high-temperature seals compatible with fuels and oils; its 90A hardness and Viton chemistry offer durability and chemical resistance that justify the cost for industrial use and regular service parts stocking.\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, Viton is compatible with petroleum fuels, diesel and biodiesel blends, and many common automotive fluids listed in the product description.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo the dimensions match AS568 sizing?\u003c\/strong\u003e\u003cbr\u003eYes, the product is offered to meet AS568 size standards and lists nominal and actual dimensions for verification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long will these o-rings last in storage?\u003c\/strong\u003e\u003cbr\u003eThe material has an effectively unlimited shelf-life when stored away from extreme heat and direct sunlight, per the product information.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48243974242523,"sku":"B07R74H8BH","price":94.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_15477e9e-47b4-4377-907b-b8e12b069206.jpg?v=1771061617","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-376-viton-o-ring-90a-durometer-9-3-4-in-id-pack-of-5","provider":"GearMustHave","version":"1.0","type":"link"}