{"product_id":"m2-4x37-6-viton-o-ring-75a-round-black-pack-of-50","title":"M2.4x37.6 Viton O-Ring 75A Round Black - Pack of 50","description":"\u003cp\u003eIn this review the M2.4x37.6 Viton O-Ring is evaluated for technicians, hobbyists, and maintenance staff who need a chemical- and heat-resistant seal in threaded or overlapping cylindrical applications. The bottom line: this pack of 50 black Viton rings offers a dependable, mid-hardness seal that excels where resistance to fuels, oils and high temperatures matters. The reviewer found the O-ring's 75A durometer gives a balanced firmness for thread protection and sealing without excessive compression, making it a practical choice for carburetor seats, threaded barrel protectors and general industrial sealing tasks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton fluorocarbon elastomer provides strong resistance to fuels, oils and many chemicals for longer service life in harsh environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated for use across a wide temperature span so it remains flexible from low temperatures to high-heat operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer 75A:\u003c\/strong\u003e A mid-range hardness that balances sealing performance and durability without flattening under moderate compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound cross-section:\u003c\/strong\u003e Classic o-ring geometry forms an effective seal between overlapping cylindrical surfaces and threaded protectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack quantity:\u003c\/strong\u003e Supplied as a pack of 50 which is convenient for maintenance shops or repeat replacements and reduces downtime sourcing single pieces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis O-ring is best for mechanics, field technicians, and DIYers who work with non-flammable hydraulic fuels, silicone oils, and many aromatic or aliphatic hydrocarbons where chemical compatibility and heat resistance are required. It is also useful for users who need reliable thread protection and sealing for firearm barrels or small engine carburetors, as customers reported good fits on 10mm and Springfield threaded barrels and carburetor seat applications.\u003c\/p\u003e\u003cp\u003eThose who need compatibility with highly polar chemicals, ammonia gas, strong alkalis, or glycol-based brake fluids should look elsewhere, since Viton is vulnerable to some low molecular weight organic acids, amines and super-heated steam. Also, if a softer, squeeze-friendly seal is required, a lower durometer material would be more appropriate.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eExcellent chemical and fuel resistance for many common lubricants and hydrocarbons.\u003c\/li\u003e\n\u003cli\u003eThe 75A hardness provides durable sealing and good thread protection without excessive deformation.\u003c\/li\u003e\n\u003cli\u003eWide temperature capability that suits a range of workshop and industrial conditions.\u003c\/li\u003e\n\u003cli\u003ePack of 50 gives strong value for maintenance use and multiple replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot compatible with certain chemicals such as ammonia, strong alkalis, some brake fluids and super-heated steam.\u003c\/li\u003e\n\u003cli\u003eThe 75A hardness may be too firm for applications that require very soft sealing contact.\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\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\u003e37.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e42.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross-section width\u003c\/td\u003e\n\u003ctd\u003e2.4 mm\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\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003ePack of 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe M2.4x37.6 Viton O-Ring is a practical, cost-effective choice for users who need a heat- and fuel-resistant seal in threaded or cylindrical applications. Its 75A hardness and Viton construction make it particularly suited to maintenance shops and equipment exposed to oils and hydrocarbons; buy it if you want reliable sealing and value in bulk, but choose a different compound if your application involves ammonia, strong alkalis or requires a softer gasket.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this O-ring suitable for gasoline and hydraulic fuel?\u003c\/strong\u003e\u003cbr\u003eYes, Viton is compatible with many fuels and non-flammable hydraulic fluids listed among typical safe uses.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature range will it tolerate?\u003c\/strong\u003e\u003cbr\u003eIt is designed to work across a wide temperature range, remaining functional from low temperatures up to several hundred degrees Fahrenheit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it fit small threaded barrels and carburetor seals?\u003c\/strong\u003e\u003cbr\u003eCustomers report good fits on 10mm threaded barrels and small carburetor seat seals, making it a common choice for those uses.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48256994902235,"sku":"B00NR0WRGA","price":94.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/611g_BwDJoL._SL1500_97f16d29-ef7a-409a-83c4-cc95f24b52fc.jpg?v=1778312097","url":"https:\/\/gearmusthave.com\/products\/m2-4x37-6-viton-o-ring-75a-round-black-pack-of-50","provider":"GearMustHave","version":"1.0","type":"link"}