{"product_id":"m5x70-viton-o-ring-75a-durometer-70-mm-id-durable-seal","title":"M5x70 Viton O-Ring, 75A Durometer, 70 mm ID - Durable Seal","description":"\u003cp\u003eIn this review the M5x70 Viton O-Ring is evaluated for technicians and hobbyists who need a reliable, chemical-resistant seal. The bottom line: this pack of 10 black Viton O-rings stands out for chemical and heat resistance, making it the best pick when compatibility with fuels, oils and hydrocarbons matters most. The reviewer found the O-ring's 75A durometer and round cross-section provide a firm, long-lasting seal for threaded barrels, carburetor seats and other cylindrical overlaps while remaining flexible across a wide temperature range.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made from Viton fluorocarbon elastomer to resist fuels, oils and many chemicals so it lasts in demanding environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 75A durometer offers a balance of flexibility and firmness that maintains a reliable seal without extruding under pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated for wide temperature use so it performs from cold starts through high-heat operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Round cross-section creates a consistent seal between cylindrical overlapping surfaces for thread protection and seat sealing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Works well with non-flammable hydraulic fuels, silicone oil and aromatic and aliphatic hydrocarbons, giving broad application options.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis O-ring is ideal for mechanics, small engine users, and industrial service techs who need a compact, chemical-resistant seal for threaded barrels, carburetor seats, and similar applications. The pack of 10 suits maintenance tasks where multiple replacements or spares are useful.\u003c\/p\u003e\u003cp\u003eUsers who need compatibility with strong acids, ammonia gas, alkalis or glycol-based brake fluids should look elsewhere or confirm compatibility, as Viton can be vulnerable to some low molecular weight organic acids and ammonia.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGood chemical resistance for fuels and many solvents, reducing replacement frequency.\u003c\/li\u003e\n\u003cli\u003e75A durometer gives a dependable seal while remaining flexible enough for thread protection and seat use.\u003c\/li\u003e\n\u003cli\u003ePack of 10 provides value for maintenance and multiple applications.\u003c\/li\u003e\n\u003cli\u003eWorks across a broad temperature range, suitable for many automotive and industrial settings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot compatible with ammonia, some alkalis and certain organic acids, so it is not universal for all fluids.\u003c\/li\u003e\n\u003cli\u003eThe higher temperature limit noted in some specs may vary by compound; confirm for extreme steam or caustic exposures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\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\u003eDurometer\u003c\/td\u003e\n\u003ctd\u003e75A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross-section\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner diameter (ID)\u003c\/td\u003e\n\u003ctd\u003e70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e80 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack quantity\u003c\/td\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe M5x70 Viton O-Ring is a practical, value-focused choice for anyone needing a resilient seal against fuels and common solvents. It is best for threaded barrels, carburetor seats and other cylindrical seals where chemical and heat resistance matter; just avoid environments with ammonia or strong alkalis.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this O-ring compatible with gasoline?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with many fuels and hydrocarbons, making this O-ring suitable for gasoline-contact applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature range will it tolerate?\u003c\/strong\u003e\u003cbr\u003eIt is intended for wide temperature use, performing from below freezing up to several hundred degrees Fahrenheit in typical service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many O-rings are included?\u003c\/strong\u003e\u003cbr\u003eThe product comes as a pack of 10 identical Viton O-rings.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48261019369691,"sku":"B00NQXGZ48","price":80.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71lVOM9LZJL._SL1500_6f2490f2-7c94-4b9d-825e-ccf5cfe3c768.jpg?v=1778323785","url":"https:\/\/gearmusthave.com\/products\/m5x70-viton-o-ring-75a-durometer-70-mm-id-durable-seal","provider":"GearMustHave","version":"1.0","type":"link"}