{"product_id":"395-viton-o-ring-75a-durometer-26-in-id-high-temp-seal","title":"395 Viton O-Ring 75A Durometer 26 in ID - High-Temp Seal","description":"\u003cp\u003eIn this review the 395 Viton O-ring is evaluated for practical sealing tasks where chemical and heat resistance matter. The bottom line: this single 26 in ID, 3\/16 in width O-ring is best for technicians and hobbyists who need a reliable replacement seal that tolerates fuels, oils and high temperatures. Its primary strength is material choice - solid Viton (fluorocarbon elastomer) with a 75A durometer - which delivers durability, leak resistance and broad chemical compatibility for demanding service conditions.\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 for strong resistance to fuels, aromatic and aliphatic hydrocarbons and many chemicals, reducing seal degradation in aggressive environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Rated from -15 degrees F to 400 degrees F, allowing use in both cold storage and high-heat engine or industrial applications without rapid failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 75A durometer provides resistance to penetration and extrusion while still forming a reliable seal on cylindrical mating surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape and Fit:\u003c\/strong\u003e Round cross-section is designed to seal between overlapping cylindrical parts, giving predictable compression and leak resistance when sized correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Manufactured to meet Aerospace Standard AS568A sizing, which helps ensure interchangeability with common metric and inch O-ring grooves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Use Cases:\u003c\/strong\u003e Compatible with non-flammable hydraulic fuels, silicone oils and many hydrocarbons, making it suitable for fuel bottle seals and certain firearm and suppressor applications noted by users.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 395 Viton O-ring is aimed at professionals and experienced DIYers who need a tough replacement seal for fuel handling, hydraulic fittings, and other systems exposed to heat or aggressive hydrocarbons. It is particularly useful where compatibility with aromatic fuels or silicone oils is required and where a 26 in ID, 3\/16 in cross-section is the correct size.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing resistance to strong bases, amines, glycol-based brake fluids, ammonia gas or super-heated steam, since Viton is vulnerable to some of those substances. Also, if a softer sealing material or a different durometer is required for very low-pressure, ultra-soft sealing, consider alternatives.\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\u003eHigh heat and chemical resistance from Viton construction gives long service life under demanding conditions.\u003c\/li\u003e\n\u003cli\u003e75A hardness balances durability and sealing ability, with customers reporting good leak resistance in fuel bottle and barrel seal applications.\u003c\/li\u003e\n\u003cli\u003eCorrect sizing and AS568A compatibility make it a straightforward replacement for many standard O-ring grooves.\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 low molecular weight organic acids, amines, alkaline solutions or glycol-based brake fluids, which limits use in some automotive or chemical systems.\u003c\/li\u003e\n\u003cli\u003eSingle pack means buyers needing multiple replacements will have to order extra units separately.\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\u003eInner Diameter (ID)\u003c\/td\u003e\n\u003ctd\u003e26 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e26-3\/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\u003eDurometer\u003c\/td\u003e\n\u003ctd\u003e75A\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\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 395 Viton O-ring is a solid choice when a chemically tolerant, high-temperature seal is required in a 26 in ID size. It delivers dependable leak resistance and durability for fuel handling, hydraulic and some industrial uses, offering good value for anyone replacing worn seals where Viton compatibility is important.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this O-ring suitable for fuel applications?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with many fuels and aromatic hydrocarbons listed in the product description and customers report reliable performance in fuel bottle seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperatures can this O-ring handle?\u003c\/strong\u003e\u003cbr\u003eThis O-ring works from -15 degrees F up to 400 degrees F, covering most cold storage to high-heat scenarios.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it resist brake fluid and strong bases?\u003c\/strong\u003e\u003cbr\u003eNo, Viton is vulnerable to glycol-based brake fluids, strong alkalis and some amines, so avoid those fluids for long-term use.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48195550347483,"sku":"B000FMUVUW","price":49.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_a898b86b-8e6a-4267-8188-46e05ce90c9f.jpg?v=1770290598","url":"https:\/\/gearmusthave.com\/products\/395-viton-o-ring-75a-durometer-26-in-id-high-temp-seal","provider":"GearMustHave","version":"1.0","type":"link"}