{"product_id":"364-viton-o-ring-75a-durometer-6-3-4-in-id-pack-of-25-chemical","title":"364 Viton O-Ring 75A Durometer 6-3\/4 in ID Pack of 25 - Chemical","description":"\u003cp\u003eIn this review the 364 Viton O-Ring is evaluated as a practical replacement part for technicians, hobbyists, and maintenance crews who need a resilient seal that resists fuels and many chemicals. The bottom line: this pack of 25 black Viton rings is best for users who require a reliable, heat-tolerant seal across a range of applications - the single biggest reason to buy is the material's proven chemical and thermal resistance, which makes these O-rings a cost-effective substitute for more expensive OEM parts.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made from Viton fluorocarbon elastomer to provide strong resistance to fuels, aromatic and aliphatic hydrocarbons, and many aggressive chemicals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Usable from -15 degrees F to 400 degrees F, giving confidence for both low-temperature storage and high-heat service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e 75A hardness offers firm resistance to penetration while still providing an effective seal in dynamic and static applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape and fit:\u003c\/strong\u003e Round cross-section designed to seal between cylindrical overlapping surfaces for reliable leak resistance in common plumbing and fuel systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Meets Aerospace Standard AS568A sizes, ensuring consistent dimensions for common replacement needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack size:\u003c\/strong\u003e Supplied as a pack of 25, making it an economical option for repeated maintenance or multiple installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis Viton O-ring pack is for maintenance technicians, field service personnel, and home mechanics who replace seals on fuel bottles, hydraulic fittings, or custom plumbing where fuel and heat resistance matter. It also suits PC watercooling hobbyists and anyone who needs a durable, high-temperature elastomer in bulk.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing compatibility with glycol-based brake fluids, certain amines or strong alkalis, or super-heated steam applications, since Viton is vulnerable to those specific chemicals and conditions.\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 heat resistance for fuel and aromatic hydrocarbon exposure.\u003c\/li\u003e\n\u003cli\u003eDurable 75A shore hardness that balances resilience and sealing performance.\u003c\/li\u003e\n\u003cli\u003ePack of 25 offers strong value for replacements or multi-point servicing.\u003c\/li\u003e\n\u003cli\u003eConsistent sizing that fits common AS568A O-ring grooves used in many assemblies.\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 low molecular organic acids, some amines, alkalis, glycol-based brake fluids, or super-heated steam, limiting use in those environments.\u003c\/li\u003e\n\u003cli\u003eThe relatively firm 75A hardness may be less forgiving in very low-pressure, delicate sealing tasks that require softer compounds.\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\u003e6-3\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e7-1\/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\u003eThese 364 Viton O-rings are a sensible purchase for anyone needing reliable, heat- and fuel-resistant seals in bulk. They deliver strong leak resistance and durability for most fuel, hydraulic, and high-temperature uses, making the pack of 25 a cost-effective option for repairs and preventive maintenance.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these O-rings suitable for fuel systems?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with many fuels and aromatic hydrocarbons, making these rings suitable for many fuel system sealing points.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill they withstand high temperatures?\u003c\/strong\u003e\u003cbr\u003eYes, the specified operating range extends to 400 degrees F, so they are appropriate for many high-heat applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these be used with brake fluid or alkalis?\u003c\/strong\u003e\u003cbr\u003eNo, Viton is vulnerable to glycol-based brake fluids, strong alkalis, and certain amines, so avoid those fluids.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48244406288603,"sku":"B000FOJL06","price":178.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_b042e805-160b-4e23-8dbf-aecc2a3e0825.jpg?v=1776266291","url":"https:\/\/gearmusthave.com\/products\/364-viton-o-ring-75a-durometer-6-3-4-in-id-pack-of-25-chemical","provider":"GearMustHave","version":"1.0","type":"link"}