{"product_id":"229-viton-o-ring-75a-durometer-2-3-8in-id-2-5-8in-od-pack-of-25","title":"229 Viton O-Ring 75A Durometer 2-3\/8in ID 2-5\/8in OD Pack of 25","description":"\u003cp\u003eIn this review the 229 Viton O-ring is evaluated for buyers who need reliable seals in demanding environments; the bottom line is that it delivers consistent chemical and heat resistance where standard nitrile rings fail. The pack of 25 covers repeat maintenance or multiple fittings, and the review finds the 75A durometer strikes a practical balance between durability and compressibility for overlapping cylindrical surfaces. Customers replacing worn fuel bottle seals or barrel gaskets will appreciate the fit, and the wide usable temperature range makes it useful for workshop and field service work.\u003c\/p\u003e\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 strong resistance to fuels, aromatic and aliphatic hydrocarbons, and many chemicals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -15 degrees F to 400 degrees F, it works across hot engine components and cold storage without rapid degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e The 75A hardness gives good resistance to penetration and extrusion while still compressing to form a reliable seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-section:\u003c\/strong\u003e The round cross-section is sized to seal between overlapping cylindrical surfaces and replace common standard O-rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Supplied as a pack of 25, it provides spare parts for multiple service intervals or for stocking in a maintenance kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Manufactured to match the Aerospace Standard AS568A sizing, easing replacement and compatibility with common fittings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis Viton O-ring is aimed at technicians, hobbyists, and maintenance staff who need seals that tolerate fuel, solvents, and high temperatures, such as in non-flammable hydraulic systems, fuel bottle applications, or firearm and suppressor sealing where heat and chemical exposure are common. The pack size is convenient for those performing recurring repairs or stocking a parts bin.\u003c\/p\u003e\n\u003cp\u003eThose who need compatibility with strong alkalis, ammonia gas, glycol-based brake fluids, or super-heated steam should look for alternative elastomers, since Viton is vulnerable to those media. If a much softer or much harder material is required for a specific dynamic seal, verify durometer needs before selecting this 75A ring.\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 and fuel resistance for applications exposed to hydrocarbons and many solvents.\u003c\/li\u003e\n\u003cli\u003eWide usable temperature range allows use from subfreezing service to high-heat engine areas.\u003c\/li\u003e\n\u003cli\u003ePack of 25 offers good value and convenient spare parts supply for maintenance tasks.\u003c\/li\u003e\n\u003cli\u003eCustomers report good fit and leak resistance in practical replacements and specialty uses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot suitable for exposure to low molecular organic acids, ammonia, alkalis, or glycol-based brake fluids, limiting use in some industrial environments.\u003c\/li\u003e\n\u003cli\u003eThe 75A hardness may be too firm for very low-pressure static seals that require a softer compound for full conformity.\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 (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\u003eHardness\u003c\/td\u003e\n\u003ctd\u003e75A durometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner diameter (ID)\u003c\/td\u003e\n\u003ctd\u003e2-3\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e2-5\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross-section width\u003c\/td\u003e\n\u003ctd\u003e1\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack quantity\u003c\/td\u003e\n\u003ctd\u003e25 rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 229 Viton O-ring is a dependable choice for anyone needing robust, heat- and fuel-resistant seals for static and many dynamic applications; it is good value in a 25-pack and fits common AS568A standard sizes. Buy it if your application involves hydrocarbons, high temperatures, or vacuum environments, but choose a different elastomer if exposure to alkalis, ammonia, or glycol brake fluids is expected.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these O-rings compatible with gasoline and diesel?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with fuels and aromatic and aliphatic hydrocarbons, making these rings suitable for many fuel-related seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill they hold up at high temperature?\u003c\/strong\u003e\u003cbr\u003eYes, they are usable up to 400 degrees F (205 degrees C), suitable for many engine and high-heat applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they fit standard AS568A sizes?\u003c\/strong\u003e\u003cbr\u003eYes, these rings meet the sizing standards defined by AS568A which helps ensure compatibility with common fittings.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48676284039387,"sku":"B000FMUVZC","price":35.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_e01aaf6a-f456-4cd1-a7b7-b173f545e3dc.jpg?v=1778711882","url":"https:\/\/gearmusthave.com\/products\/229-viton-o-ring-75a-durometer-2-3-8in-id-2-5-8in-od-pack-of-25","provider":"GearMustHave","version":"1.0","type":"link"}