{"product_id":"475-viton-o-ring-75a-durometer-26-in-id-heat-and-chemical-resistant","title":"475 Viton O-Ring 75A Durometer 26 in ID - Heat and Chemical Resistant","description":"\u003cp\u003eIn this review the 475 Viton O-ring is evaluated as a single-purpose replacement seal ideal for applications that demand chemical and heat resistance. The bottom line: this O-ring is for technicians, shooters, and equipment maintainers who need a durable, precisely sized seal that resists fuels and many solvents; it stands out because it combines Viton fluorocarbon material with a 75A hardness to hold shape under pressure and temperature while preventing leaks. The reviewer found it particularly useful where a reliable, direct-fit replacement is needed and where exposure to fuels or high heat is expected.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made of Viton fluorocarbon elastomer, it provides superior resistance to fuels, aromatic and aliphatic hydrocarbons, and many solvents for longer service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -15 degrees F to 400 degrees F, making it suitable for both cold storage and high-heat equipment environments without rapid degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e At 75A hardness the O-ring resists penetration and extrusion while still offering enough compressibility to form reliable seals on cylindrical overlaps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-section:\u003c\/strong\u003e Round profile ensures consistent sealing between mating cylindrical parts such as bottle necks, barrels, and hydraulic fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Acceptable for non-flammable hydraulic fuels, silicone oil, trichloroethylene, propane and benzene in many service conditions, which reduces the need for frequent replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis O-ring is best for maintenance technicians, firearms owners replacing barrel seals, and users of fuel-handling equipment who need a precise 26 in ID seal that resists heat and common fuels. It also suits laboratory or industrial gear where vacuum, ozone exposure, or weathering resistance matters.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing compatibility with glycol-based brake fluids, strong alkalis, ammonia gas, amines, or super-heated steam, since Viton is vulnerable to these agents. Also, do not choose this if a softer or much harder durometer is required for a specific dynamic sealing application.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGood fit and leak resistance in reported uses such as MSA fuel bottles and Remington barrel seals.\u003c\/li\u003e\n\u003cli\u003eHigh heat tolerance up to 400 degrees F preserves integrity in hot environments.\u003c\/li\u003e\n\u003cli\u003eDurable 75A hardness balances sealing and resistance to penetration for long-term value.\u003c\/li\u003e\n\u003cli\u003eWorks with a wide range of hydrocarbons and solvents common in industrial and field use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot compatible with glycol-based brake fluids, strong alkalis, amines, or super-heated steam, limiting use in some automotive or chemical systems.\u003c\/li\u003e\n\u003cli\u003eThe specific size is fixed; users needing custom sizes must source a different part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eViton (fluorocarbon elastomer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner diameter\u003c\/td\u003e\n\u003ctd\u003e26 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter\u003c\/td\u003e\n\u003ctd\u003e26-1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth \/ cross-section\u003c\/td\u003e\n\u003ctd\u003e1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDurometer\u003c\/td\u003e\n\u003ctd\u003e75A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003e-15 degrees F to 400 degrees F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 475 Viton O-ring is a solid, purpose-built replacement for anyone who needs a 26 in ID seal that tolerates fuels, heat, and common solvents. It offers clear value through durability and effective leak resistance, making it a practical choice for maintenance and repair tasks where Viton compatibility is required, provided the chemical exposures avoid known Viton vulnerabilities.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this O-ring suitable for fuel exposure?\u003c\/strong\u003e\u003cbr\u003eYes. The Viton material is compatible with many fuels, aromatic and aliphatic hydrocarbons, and silicone oils as described, making it suitable for fuel-handling seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperatures can it handle?\u003c\/strong\u003e\u003cbr\u003eThe O-ring is rated from -15 degrees F to 400 degrees F for most sealing applications within that range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used with brake fluids or strong alkalis?\u003c\/strong\u003e\u003cbr\u003eNo. Viton is vulnerable to glycol-based brake fluids, strong alkalis, amines, and similar chemicals, so avoid those environments.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48646642303195,"sku":"B000FMUX6O","price":68.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_ac7af116-5daf-482f-a341-a35ff3cc1660.jpg?v=1778595897","url":"https:\/\/gearmusthave.com\/products\/475-viton-o-ring-75a-durometer-26-in-id-heat-and-chemical-resistant","provider":"GearMustHave","version":"1.0","type":"link"}