{"product_id":"119-viton-o-ring-75a-durometer-15-16in-id-1-1-8in-od-pack-of-100","title":"119 Viton O-Ring 75A Durometer 15\/16in ID 1-1\/8in OD Pack of 100","description":"\u003cp\u003eIn this review the 119 Viton O-ring is judged on durability, chemical resistance and fit for common seal replacements. It is aimed at mechanics, HVAC and plumbing technicians, firearm and fuel-system hobbyists who need a reliable replacement O-ring that resists heat, fuels and many chemicals. The single biggest reason to buy is its material: molded from Viton fluorocarbon elastomer with a 75A durometer, it holds shape and seal under high temperatures and contact with fuels where ordinary elastomers would swell or fail.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton fluorocarbon elastomer delivers superior resistance to fuels and many chemicals compared with standard rubber, helping seals last longer in harsh media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -15 degrees F to 400 degrees F, the O-ring performs across wide thermal swings found in engines or hot hydraulic lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e The 75A hardness balances elasticity and resistance to penetration, giving a reliable compressive seal without extruding under pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape and size:\u003c\/strong\u003e Round cross-section with a 15\/16in inside diameter and 1-1\/8in outside diameter provides a precise fit for applications that match AS568A standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical compatibility:\u003c\/strong\u003e Suitable for non-flammable hydraulic fuels, silicone oil, aromatic and aliphatic hydrocarbons, and many chlorinated solvents, reducing the need for multiple material types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Pack of 100 offers value for repairs and routine maintenance, keeping spares on hand for recurring jobs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis O-ring is best for technicians, hobbyists and industrial users who repair fuel systems, hydraulic equipment, seals on bottles or gear that encounter fuels, oils or elevated temperatures. It is also a practical choice for anyone replacing common AS568A size rings in firearms or specialty gear where a heat- and fuel-resistant material is needed.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing compatibility with strong alkalis, amines, low molecular organic acids or glycol-based brake fluids, and anyone requiring steam resistance at high temperatures, as Viton is vulnerable to those media.\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 fuel and heat resistance that preserves sealing performance in demanding environments.\u003c\/li\u003e\n\u003cli\u003eConsistent sizing to AS568A expectations means many customers report good fit for common replacements.\u003c\/li\u003e\n\u003cli\u003ePack of 100 provides strong value for maintenance teams and hobbyists who change seals regularly.\u003c\/li\u003e\n\u003cli\u003eFirm 75A durometer resists penetration and extrusion while maintaining sealing contact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot compatible with certain chemicals such as ammonia, some alkalis and glycol-based brake fluids, so chemical compatibility must be checked first.\u003c\/li\u003e\n\u003cli\u003eHigher hardness may feel stiffer than softer compounds for very low-pressure static seals.\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 (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\u003eInside diameter\u003c\/td\u003e\n\u003ctd\u003e15\/16in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside diameter\u003c\/td\u003e\n\u003ctd\u003e1-1\/8in\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\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003ePack of 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 119 Viton O-ring is a dependable, value-packed choice for anyone needing a heat- and fuel-resistant replacement that meets common AS568A sizing expectations. It is especially good for fuel-system and high-temperature applications, offering long service life where standard elastomers would deteriorate.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these O-rings resist gasoline and diesel?\u003c\/strong\u003e\u003cbr\u003eYes; Viton is compatible with many fuels including aromatic and aliphatic hydrocarbons and is a good choice for fuel-exposed seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan they be used at very low temperatures?\u003c\/strong\u003e\u003cbr\u003eThey are rated down to -15 degrees F, so they work in many cold environments but may stiffen near that lower limit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre they suitable for brake fluid or steam service?\u003c\/strong\u003e\u003cbr\u003eNo; Viton is vulnerable to glycol-based brake fluids and super-heated steam, so use a different material for those media.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48189724197083,"sku":"B000MNBO2S","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_bec7b59a-9aa8-46ef-94ed-194821037e16.jpg?v=1769656106","url":"https:\/\/gearmusthave.com\/products\/119-viton-o-ring-75a-durometer-15-16in-id-1-1-8in-od-pack-of-100","provider":"GearMustHave","version":"1.0","type":"link"}