{"product_id":"374-viton-o-ring-75a-9-1-4in-id-9-5-8in-od-pack-of-5-chemical-heat","title":"374 Viton O-Ring 75A 9-1\/4in ID 9-5\/8in OD Pack of 5 - Chemical \u0026 Heat","description":"\u003cp\u003eOur review of the 374 Viton O-ring pack finds these simple seals are best for technicians, maintenance crews, and hobbyists who need reliable resistance to heat, fuels and many chemicals. The bottom line: this is a straightforward replacement O-ring that excels where temperature and chemical compatibility matter, offering good durability thanks to its \u003cstrong\u003eViton fluorocarbon\u003c\/strong\u003e construction and a practical 75A durometer. For anyone fitting seals into fuel systems, hydraulic fittings, or high-temperature equipment, these rings give a predictable, leak-resistant result without fuss.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made of Viton, the elastomer provides broad resistance to fuels, aromatic and aliphatic hydrocarbons and many solvents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -15 degrees F to 400 degrees F, the ring suits applications that cycle through wide thermal extremes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e The 75A durometer balances resistance to penetration with enough resilience to form a reliable seal on cylindrical surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e Round cross-section designed for sealing overlapping cylindrical parts to reduce leaks under compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Manufactured to the AS568A dimensional family, making it a drop-in match for common equipment that uses standard O-ring sizes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis pack is aimed at professionals and informed DIYers replacing seals in fuel bottles, pneumatic fittings, hydraulic components, or firearm-related assemblies where customers report good fit and leak resistance. It is also useful for use in ozone- or weather-exposed locations where Viton performs better than many other elastomers.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include users who need compatibility with strong alkalis, ammonia gas, certain amines, glycol-based brake fluids, or super-heated steam, since Viton is vulnerable to these media. For very low-temperature elastomer flexibility below the specified range, a different compound may be preferable.\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 a wide variety of service fluids.\u003c\/li\u003e\n\u003cli\u003eHigh temperature capability up to 400 degrees F makes it durable in heat-exposed applications.\u003c\/li\u003e\n\u003cli\u003eConsistent sizing to AS568A standards ensures reliable fit in common equipment.\u003c\/li\u003e\n\u003cli\u003eCustomers note good fit, leak resistance and overall value for money in replacement roles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot compatible with low molecular weight organic acids, ammonia and certain alkalis, limiting use in some chemical systems.\u003c\/li\u003e\n\u003cli\u003eThe 75A hardness may feel stiff for applications that demand very soft, flexible seals at room temperature.\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\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\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\u003eInner Diameter (ID)\u003c\/td\u003e\n\u003ctd\u003e9-1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e9-5\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross-section Width\u003c\/td\u003e\n\u003ctd\u003e3\/16 in\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 374 Viton O-ring pack is a pragmatic choice for anyone needing dependable heat and fuel resistance in standard sized seals; it fits common assemblies and holds up under thermal stress while offering good leak resistance and value. Buy this if you require chemical and high-temperature durability in an AS568A-size O-ring, but choose a different compound if you need resistance to ammonia, strong alkalis or glycol-based fluids.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eAre these O-rings compatible with gasoline and common fuels?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with many fuels and aromatic and aliphatic hydrocarbons, making these rings suitable for fuel system seals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo these meet a standard size so they can replace other O-rings?\u003c\/strong\u003e\u003cbr\u003eYes, they are made to the AS568A dimensional family so they serve as drop-in replacements for matching standard sizes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat environments should be avoided?\u003c\/strong\u003e\u003cbr\u003eAvoid exposure to low molecular organic acids, ammonia, amines, strong alkalis, glycol-based brake fluids and super-heated steam where Viton performs poorly.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48265006481627,"sku":"B000FONOG8","price":56.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_cfe4a0b7-eeb3-45d5-bd0d-f3c3db87ef16.jpg?v=1776357788","url":"https:\/\/gearmusthave.com\/products\/374-viton-o-ring-75a-9-1-4in-id-9-5-8in-od-pack-of-5-chemical-heat","provider":"GearMustHave","version":"1.0","type":"link"}