{"product_id":"375-viton-o-ring-75a-durometer-9-1-2-in-id-pack-of-5","title":"375 Viton O-Ring 75A Durometer, 9-1\/2 in ID - Pack of 5","description":"\u003cp\u003eIn this review the 375 Viton O-Ring pack is judged on durability and chemical resistance for demanding sealing jobs. The bottom line: this is a small, specialized replacement pack best suited to maintenance techs and DIYers who need a heat- and fuel-resistant seal that holds up under pressure. The pack of five offers a practical mix of size and hardness, and the review finds the biggest reason to buy is Viton material performance across high temperatures and a wide range of fuels and chemicals.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made of Viton fluorocarbon elastomer, it provides excellent resistance to fuels, aromatic and aliphatic hydrocarbons, and many chemicals encountered in industrial use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated to work from -15 degrees F to 400 degrees F, offering reliable sealing in both cold storage and high-heat applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e The 75A durometer gives a firm seal that resists penetration and extrusion while still conforming to mating surfaces for leak control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape and fit:\u003c\/strong\u003e Round cross-section and precise dimensions produce a predictable seal between cylindrical overlapping surfaces like fuel bottle necks and barrel seals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Compatible with non-flammable hydraulic fuels, silicone oil, trichlorethylene and many hydrocarbons, making it useful in maintenance and replacement roles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Manufactured to AS568A standard sizing so it matches common O-ring grooves and replacement needs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis product is for mechanics, maintenance technicians, and hobbyists who need a reliable, chemically resistant O-ring for fuel systems, seals on firearms or suppressor mounts, and industrial equipment that sees heat and fuel exposure. Customers replacing seals on MSA fuel bottles or specific barrel seals will find the size and durometer match their requirements.\u003c\/p\u003e\u003cp\u003eIt is not the best choice for applications exposed to strong alkalis, ammonia gas, low molecular weight organic acids, glycol-based brake fluids, or super-heated steam; those environments may require alternate elastomers better suited to those chemistries.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh temperature capability up to 400 degrees F ensures long life in heat-exposed seals.\u003c\/li\u003e\n\u003cli\u003eViton material gives strong resistance to fuels and many hydrocarbons for reliable leak prevention.\u003c\/li\u003e\n\u003cli\u003e75A durometer balances firmness and sealing ability for common cylindrical joints.\u003c\/li\u003e\n\u003cli\u003ePack of five provides spare parts for routine maintenance or multiple replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot resistant to certain alkalis, amines, and glycol-based brake fluids, so it is not universal for all chemical exposures.\u003c\/li\u003e\n\u003cli\u003eThe specific size is narrow in application; users must verify groove dimensions before ordering.\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\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e9-7\/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 375 Viton O-Ring pack is a sensible buy for anyone needing chemically resistant, heat-tolerant seals in common cylindrical applications. Its 75A hardness and AS568A sizing deliver dependable fit and leak resistance, and the pack of five offers good value for repair and maintenance tasks where Viton compatibility is required.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this O-ring resist gasoline and diesel?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with fuels and aromatic and aliphatic hydrocarbons, so it is suitable for gasoline and diesel exposure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan these be used in high vacuum or ozone-exposed systems?\u003c\/strong\u003e\u003cbr\u003eYes, Viton performs well in high vacuum environments and resists ozone and weathering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these compatible with brake fluid or ammonia?\u003c\/strong\u003e\u003cbr\u003eNo, Viton is vulnerable to glycol-based brake fluids, ammonia gas, and some organic acids, so choose a different elastomer for those fluids.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48616146927835,"sku":"B000FOLPYG","price":57.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_fce973d2-4b98-4303-8891-544414c501eb.jpg?v=1778489983","url":"https:\/\/gearmusthave.com\/products\/375-viton-o-ring-75a-durometer-9-1-2-in-id-pack-of-5","provider":"GearMustHave","version":"1.0","type":"link"}