{"product_id":"m5-33x109-54-viton-o-ring-75a-durometer-reliable-chemical-seal","title":"M5.33x109.54 Viton O-Ring 75A Durometer - Reliable Chemical Seal","description":"\u003cp\u003eOur review of the M5.33x109.54 Viton O-Ring finds it best suited for technical users who need a small, durable seal that resists fuels and many industrial chemicals. The bottom line: this pack of five O-rings offers consistent fit and chemical resistance where a compact, heat-tolerant seal is required. The reviewer found the O-ring's 75A durometer and Viton compound deliver dependable sealing and thread protection in applications like threaded barrels, carburetor seats, and compact hydraulic fittings.\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 that provides strong resistance to fuels and many chemicals, making it suitable for demanding sealing duties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e The 75A hardness balances flexibility and resilience so the ring seals reliably without deforming under typical compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated for wide operating temperatures, the material performs from cold starts to elevated service temperatures for versatile use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-section:\u003c\/strong\u003e The round profile forms a reliable seal between cylindrical overlapping surfaces, useful for threaded parts and seat seals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack quantity:\u003c\/strong\u003e Supplied as a pack of five, giving spare parts for maintenance or replacement during routine servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis O-ring is aimed at mechanics, hobbyists, and maintenance technicians working with small threaded fittings, carburetor seats, or hydraulic components that require chemical and fuel resistance. It is especially useful where compact dimensions and a consistent, firm seal matter, such as threaded barrels and small plumbing or pneumatic adapters.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing resistance to strong alkalis, ammonia gas, or glycol-based brake fluids and applications requiring elastomers rated for prolonged exposure to super-heated steam, as Viton can be vulnerable in those environments.\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\u003eGood chemical and fuel resistance from the Viton compound that suits many automotive and industrial fluids.\u003c\/li\u003e\n\u003cli\u003eThe 75A durometer offers a balance of sealability and durability for threaded and cylindrical interfaces.\u003c\/li\u003e\n\u003cli\u003eCustomers report reliable fit and function on Springfield-style threaded barrels and carburetor seat seals, confirming real-world usability.\u003c\/li\u003e\n\u003cli\u003ePack of five provides value for maintenance and repeated replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eViton is vulnerable to certain chemicals such as low molecular organic acids, ammonia, and some brake fluids, so it is not universal.\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\u003eDurometer\u003c\/td\u003e\n\u003ctd\u003e75A\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\u003eInner diameter (ID)\u003c\/td\u003e\n\u003ctd\u003e109.54 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e120.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e5.33 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack quantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe M5.33x109.54 Viton O-Ring is a practical, cost-effective choice for technicians who need a small, heat- and fuel-resistant seal that holds threads and seats securely. Given its material and 75A hardness, it delivers dependable sealing and value for routine maintenance, while users with exposure to specific acids or alkalis should consider alternative elastomers.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this O-ring work with fuel and aromatic hydrocarbons?\u003c\/strong\u003e\u003cbr\u003eYes. The Viton compound is compatible with many fuels and aromatic hydrocarbons, offering good fuel resistance for typical automotive and industrial fluids.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the temperature range suitable for high-heat applications?\u003c\/strong\u003e\u003cbr\u003eYes. The material is rated for a wide temperature range and performs well in elevated temperatures commonly encountered in engines and heated systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it fit threaded barrel applications?\u003c\/strong\u003e\u003cbr\u003eCustomers report it fits Springfield-style threaded barrels and works for thread protection and sealing in similar small threaded parts.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48687999058139,"sku":"B00NQVSL4C","price":80.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/611g_BwDJoL._SL1500_0d809fd2-0c7b-4468-81c6-9f6d7cc6a848.jpg?v=1778716702","url":"https:\/\/gearmusthave.com\/products\/m5-33x109-54-viton-o-ring-75a-durometer-reliable-chemical-seal","provider":"GearMustHave","version":"1.0","type":"link"}