{"product_id":"mr-o-ring-5x415-metric-viton-o-ring-75a-durometer-reliable-seal","title":"Mr O-Ring 5X415 Metric Viton O-Ring 75A Durometer - Reliable Seal","description":"\u003cp\u003eIn this review the Mr O-Ring 5X415 Metric Viton O-Ring is evaluated for technicians and hobbyists who need a durable, high-temperature sealing solution. The bottom line: this single-pack Viton o-ring is best for demanding fluid and temperature environments because it combines a 75A durometer with a wide working temperature range and strong chemical resistance, making it a practical choice when a reliable rubber seal is required. The review focuses on real-world sealing performance and the core specs that determine compatibility.\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 high temperature, ozone and many chemicals used in industrial and automotive systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Rated from -26C to 232C, it handles extreme cold starts and sustained high-temperature service without rapid degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e The 75A hardness balances flexibility and compression resistance for dependable static and dynamic sealing in many housings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact Dimensions:\u003c\/strong\u003e Metric 415 mm ID, 425 mm OD, 5 mm cross-section ensure predictable fit where those nominal sizes are required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Compatibility:\u003c\/strong\u003e Suitable for petroleum fuels, diesel blends, mineral oils, greases and many organic solvents commonly encountered in maintenance work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf-life:\u003c\/strong\u003e No practical shelf-life limit, so spares can be stocked without concern for expiry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis o-ring is aimed at professionals and experienced DIYers replacing seals in engines, pumps, valves and other equipment exposed to fuels, oils and higher temperatures. Its combination of Viton chemistry and 75A hardness makes it appropriate for hydraulic systems, fuel systems using methanol\/ethanol blends, and industrial equipment requiring long-term ozone and heat resistance.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing a very soft, low-durometer seal for delicate compression or applications below -26C, or anyone requiring metric sizes other than the 415 mm ID\/425 mm OD nominal dimensions supplied in this pack of one.\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 and chemical resistance from Viton material for demanding environments.\u003c\/li\u003e\n\u003cli\u003e75A durometer offers a useful middle ground between flexibility and sealing force for many static and rotating seals.\u003c\/li\u003e\n\u003cli\u003eAccurate metric dimensions reduce guesswork when replacing existing o-rings or ordering spares.\u003c\/li\u003e\n\u003cli\u003eUnlimited shelf-life simplifies long-term maintenance inventory management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSold as a single o-ring, which may not suit projects that need multiples unless ordered in quantity.\u003c\/li\u003e\n\u003cli\u003eNot suitable for applications below -26C or where a much softer material is required.\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\u003e75A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric Dimensions\u003c\/td\u003e\n\u003ctd\u003e415 mm ID x 425 mm OD x 5 mm CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Imperial Dimensions\u003c\/td\u003e\n\u003ctd\u003e16.339 in ID x 16.732 in OD x 0.197 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\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Quantity\u003c\/td\u003e\n\u003ctd\u003ePack of 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mr O-Ring 5X415 is a sensible, value-oriented choice for repair shops and maintenance teams that need a durable, chemically resistant metric o-ring in a mid-range durometer. It is best for applications exposed to fuels, oils and elevated temperatures where precise metric sizing matters. Buyers who need multiple pieces or lower-temperature performance should plan accordingly, but for one-off replacements this o-ring delivers dependable sealing and long-term storage peace of mind.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this o-ring compatible with gasoline and diesel?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with petroleum products including gasoline and diesel and their common blends as noted in the material description.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this o-ring be used in very low temperature climates?\u003c\/strong\u003e\u003cbr\u003eThe rated lower limit is -26C (-15F); for colder applications a different elastomer with better low-temperature flexibility should be chosen.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the pack include multiple rings?\u003c\/strong\u003e\u003cbr\u003eNo, this listing is a pack of one o-ring, so order multiple if more than one seal is required.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48236824002779,"sku":"B091BJVDKH","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41PzrAjdtKL_4c361d45-987f-4140-9998-5748b900d7d3.jpg?v=1770832909","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-5x415-metric-viton-o-ring-75a-durometer-reliable-seal","provider":"GearMustHave","version":"1.0","type":"link"}