{"product_id":"mr-o-ring-4x465-metric-viton-o-ring-75a-durometer-seal","title":"Mr O-Ring 4X465 Metric Viton O-Ring - 75A Durometer Seal","description":"\u003cp\u003eIn this review the Mr O-Ring 4X465 Metric Viton O-Ring is evaluated for technicians and hobbyists who need a high-temperature, chemical-resistant sealing solution. The bottom line: this single-pack 465 mm ID, 4 mm cross-section o-ring stands out for its broad chemical compatibility and wide operating temperature range, making it a reliable choice where fuels, oils or elevated temperatures are involved. The review focuses on real-world sealing performance, material resilience and practical dimensions to help buyers confirm fit and suitability.\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 excellent resistance to fuels, oils, ozone and many organic solvents for demanding environments.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -26C to 232C (-15F to 450F), it handles both low-temperature exposure and sustained high-temperature service.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e 75A durometer hardness offers a good balance of flexibility and compression resistance for long-lasting seals under pressure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eExact sizing:\u003c\/strong\u003e Metric dimensions of 465 mm ID, 473 mm OD and 4 mm CS (actual approx 18.307 in ID, 18.622 in OD, 0.157 in CS) make it straightforward to confirm compatibility with existing grooves or housings.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eChemical compatibility:\u003c\/strong\u003e Performs well in petroleum products, diesel and biodiesel blends, methanol or ethanol blends, silicone oil and hydraulic fluids for broad application use.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Essentially unlimited shelf-life means spares can be stored long-term without accelerated degradation when kept properly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis o-ring is aimed at maintenance technicians, industrial repair shops and DIYers who need a robust, high-temperature seal tolerant of fuels, oils and many solvents. It's particularly useful where metric sizing is required and where a 4 mm cross-section fits existing gland dimensions.\u003c\/p\u003e\n\u003cp\u003eThose who need food-grade elastomers, extreme low-temperature specialty compounds beyond -26C, or a softer compound for very low compression force should consider alternate materials; similarly, users requiring metric sizes other than 465 mm ID should verify fit before purchase.\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 thanks to the \u003cstrong\u003eViton FKM\u003c\/strong\u003e material, suitable for fuels and oils.\u003c\/li\u003e\n \u003cli\u003eWide operating temperature range that covers many industrial and automotive applications.\u003c\/li\u003e\n \u003cli\u003eAccurate metric and imperial dimensions listed for easy verification of fit.\u003c\/li\u003e\n \u003cli\u003eGood hardness balance at 75A for durable sealing without excessive stiffness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eNot intended for applications requiring food-grade or ultra-low temperature elastomers below -26C.\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\u003e75A\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMetric Dimensions\u003c\/td\u003e\n\u003ctd\u003e465 mm ID, 473 mm OD, 4 mm CS\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eImperial Dimensions\u003c\/td\u003e\n\u003ctd\u003eApprox 18.307 in ID, 18.622 in OD, 0.157 in 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 \u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mr O-Ring 4X465 is a pragmatic choice for users who need a durable, high-temperature and chemical-resistant seal in a metric size. Its \u003cstrong\u003eViton composition\u003c\/strong\u003e, accurate dimensions and balanced 75A hardness deliver reliable performance for industrial, automotive and hydraulic repairs, offering good value as a single spare or replacement piece.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this o-ring suitable for fuel systems?\u003c\/strong\u003e\u003cbr\u003eYes. The Viton material is resistant to petroleum products, diesel and common fuel blends, making it appropriate for many fuel system sealing applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this o-ring handle high temperatures?\u003c\/strong\u003e\u003cbr\u003eYes. It is rated to 232C (450F) and will perform in high-temperature environments within that limit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm it will fit my groove?\u003c\/strong\u003e\u003cbr\u003eMeasure the inside diameter and cross-section of the existing groove and compare to the listed 465 mm ID and 4 mm CS (actual imperial equivalents provided) to ensure compatibility.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48240970006747,"sku":"B091BJ7L48","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41PzrAjdtKL_7b6bb6b8-4cf6-45ff-9434-504517335532.jpg?v=1776265388","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-4x465-metric-viton-o-ring-75a-durometer-seal","provider":"GearMustHave","version":"1.0","type":"link"}