{"product_id":"164-viton-o-ring-75a-durometer-6-1-4-in-id-pack-of-25","title":"164 Viton O-Ring 75A Durometer 6-1\/4 in ID - Pack of 25","description":"\u003cp\u003eOur review of the 164 Viton O-Ring focuses on practical replacement and maintenance use where chemical and heat resistance matter most. These black, round O-rings are intended for technicians, workshop owners, and hobbyists who need a reliable seal that holds up under fuel exposure and elevated temperatures; the single biggest reason to buy is their material choice - Viton fluorocarbon elastomer - which provides broad compatibility with fuels, aromatic and aliphatic hydrocarbons, and high temperature service up to 400 degrees F. The review examines fit, durability, and where this pack of 25 makes sense as a stock item.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton fluorocarbon elastomer gives strong resistance to fuels, aromatic and aliphatic hydrocarbons, and many chemicals, reducing seal failures in fuel-related systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated for use from -15 degrees F to 400 degrees F, allowing the rings to perform in both cold storage and engine-heat conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer hardness:\u003c\/strong\u003e At 75A shore durometer the O-ring balances flexibility and resistance to penetration for dependable sealing under pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm and size:\u003c\/strong\u003e Round cross-section with a 6-1\/4 in ID and 6-7\/16 in OD provides a predictable compression fit on overlapping cylindrical surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack quantity:\u003c\/strong\u003e Supplied as a pack of 25, useful for maintenance shops or projects that require multiple replacements without frequent reordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis product is best for maintenance professionals, hydraulic and plumbing technicians, and users replacing seals on fuel bottles, barrels, or fittings exposed to fuels, aromatic hydrocarbons, or silicone oils. The pack size and durable material make it convenient for any workshop that services engines, fuel systems, or vacuum equipment.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include users requiring compatibility with strong alkalis, ammonia gas, or glycol-based brake fluids, since Viton is vulnerable to these substances, and applications that need elastomers rated below -26 degrees C or above 205 degrees C continuous service without confirmation of limits.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eExcellent chemical and fuel resistance for long-lasting seals in fuel-exposed assemblies.\u003c\/li\u003e\n\u003cli\u003eWide usable temperature band that covers most automotive and industrial needs.\u003c\/li\u003e\n\u003cli\u003ePack of 25 offers strong value for shops and repeated replacement tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eNot suitable for exposure to low molecular organic acids, ammonia, alkalis, and certain brake fluids, which limits use in some chemical systems.\u003c\/li\u003e\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\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\u003e6-1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter\u003c\/td\u003e\n\u003ctd\u003e6-7\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth (cross-section)\u003c\/td\u003e\n\u003ctd\u003e3\/32 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDurometer\u003c\/td\u003e\n\u003ctd\u003e75A shore\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\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe 164 Viton O-Ring pack is a practical choice for anyone needing dependable fuel and heat-resistant seals; it delivers good durability and value when used in compatible systems. Buy this pack if you need consistent sizing, resistance to hydrocarbons and high temperatures, and a ready supply for maintenance tasks - but avoid it where exposure to alkalis, ammonia, or glycol brake fluids is expected.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eAre these O-rings compatible with gasoline and diesel?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with many fuels including aromatic and aliphatic hydrocarbons, making these O-rings suitable for gasoline and similar fuels.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill they work at engine operating temperatures?\u003c\/strong\u003e\u003cbr\u003eYes, the O-rings are rated up to 400 degrees F and will handle most engine and surrounding heat conditions when used within that range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan these be used in brake systems?\u003c\/strong\u003e\u003cbr\u003eNo, Viton is vulnerable to glycol-based brake fluids, so these O-rings should not be used in brake system applications.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48196183032027,"sku":"B000FMUILY","price":74.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_7986d630-abb9-4073-8541-49abf8bac701.jpg?v=1770354543","url":"https:\/\/gearmusthave.com\/products\/164-viton-o-ring-75a-durometer-6-1-4-in-id-pack-of-25","provider":"GearMustHave","version":"1.0","type":"link"}