{"product_id":"377-viton-o-ring-90a-10-in-id-pack-of-5-high-temp-seal","title":"377 Viton O-Ring 90A, 10 in ID, Pack of 5 - High Temp Seal","description":"\u003cp\u003eIn this review of the 377 Viton O-Ring from Mr O-Ring, the bottom line is simple: this pack of five 90A durometer o-rings is aimed at technicians and hobbyists who need reliable seals that resist fuels, oils and high temperatures. The reviewer found these rings well suited for demanding sealing tasks where chemical resistance and temperature stability matter, and notes the nominal 10 in ID sizing that aligns with common AS568 standards. If you need a compact pack of durable Viton o-rings for petroleum and high-temp service, this is worth considering.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton (FKM) construction provides strong resistance to fuels, mineral oils and many organic solvents, reducing seal failure in chemical environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 90A durometer gives a firm cross-section that holds shape under compression and is suitable for static and some dynamic sealing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize accuracy:\u003c\/strong\u003e Nominal dimensions 10 in ID, 10-3\/8 in OD and 3\/16 in CS with actual measurements listed, making it easier to match to existing grooved housings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Usable from -26C (-15F) up to 232C (450F), covering very high temperature air and many industrial fluids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical versatility:\u003c\/strong\u003e Performs well with petroleum products, diesel and biodiesel blends, methanol or ethanol blends, silicone oils, and many acids, expanding application options.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack size:\u003c\/strong\u003e Supplied as a pack of 5, convenient for repair jobs or stocking small maintenance kits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is well suited to maintenance technicians, plumbers working with fuel lines, and engineers servicing pumps or hydraulic fixtures that require a temperature-resistant, chemical-compatible seal. The firmness of the 90A durometer and the Viton compound make it a strong choice where oil, fuel or heat exposure is expected.\u003c\/p\u003e\n\u003cp\u003eThose who need the softest possible sealing for very low-pressure dynamic shafts or who require specialty elastomers for extreme low-temperature flexibility should look elsewhere. Also, buyers needing metric-only sizing or a single o-ring rather than a small pack might prefer a different SKU.\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 chemical resistance to fuels, oils and many solvents, reducing maintenance frequency.\u003c\/li\u003e\n\u003cli\u003eWide operating temperature range, suitable for high-temperature applications up to 232C (450F).\u003c\/li\u003e\n\u003cli\u003eConsistent 90A hardness provides dimensional stability and good sealing under compression.\u003c\/li\u003e\n\u003cli\u003ePack of five offers value for repair work and small inventories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e90A durometer is relatively firm and may not be ideal for all dynamic shaft seals or ultra-low temperature flexibility needs.\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\u003e10 in ID, 10-3\/8 in OD, 3\/16 in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Dimensions\u003c\/td\u003e\n\u003ctd\u003e9.975 in ID, 10.395 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\u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e5 rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 377 Viton O-Ring 90A in a pack of five is a practical, value-minded choice for professionals and DIYers who need durable seals that resist fuels, oils and high temperatures. Its consistent sizing, wide chemical compatibility and high temperature rating make it good value for maintenance tasks where longevity matters.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan these o-rings handle gasoline and diesel?\u003c\/strong\u003e\u003cbr\u003eYes, the Viton compound is rated for petroleum products including diesel and blends, making them suitable for fuel system seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the dimensions precise for replacement?\u003c\/strong\u003e\u003cbr\u003eThe listing provides nominal and actual dimensions so you can match against an existing seat; the rings conform to AS568 size standards for interchangeability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat applications are best avoided?\u003c\/strong\u003e\u003cbr\u003eAvoid using these if you require very soft elastomers for low temperature dynamic shafts or where extreme flexibility below -26C is necessary.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48186294730971,"sku":"B07R43J7NJ","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_0e3d4037-052a-45a5-bf37-e63922d46c3d.jpg?v=1769659978","url":"https:\/\/gearmusthave.com\/products\/377-viton-o-ring-90a-10-in-id-pack-of-5-high-temp-seal","provider":"GearMustHave","version":"1.0","type":"link"}