{"product_id":"444-viton-o-ring-75a-durometer-7-3-4in-id-pack-of-10","title":"444 Viton O-Ring 75A Durometer, 7-3\/4in ID - Pack of 10","description":"\u003cp\u003eIn this review the 444 Viton O-ring is presented as a practical replacement for workshops, hobbyists, and technicians who need a durable seal that resists fuels and many chemicals. The bottom line: this pack of 10 black, round-section Viton O-rings is best for applications where heat and chemical resistance matter, since the fluorocarbon construction and 75A durometer deliver a firm, long-lasting seal across a wide temperature range. For anyone fitting seals in fuel systems, suppressors, or older equipment, the emphasis here is on reliability rather than specialty compatibility.\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 elastomer to provide strong resistance to fuels, aromatic and aliphatic hydrocarbons, and many industrial chemicals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Usable from -15 degrees F to 400 degrees F so it holds up in high-heat environments and cold storage alike.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e 75A hardness gives a balance of flexibility and resistance to penetration, helping the ring maintain a seal under compression.\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 common plumbing and mechanical joints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Manufactured to the AS568A size standard so it matches common O-ring grooves and replacement charts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue pack:\u003c\/strong\u003e Sold as a pack of 10 which keeps spares on hand for routine maintenance and multiple installations.\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, field technicians, and DIY users who need a resilient seal for fuel pumps, suppressors, bottle fittings, and other cylindrical joints exposed to fuels or elevated temperatures. It is also useful for laboratory and industrial settings where compatibility with chlorinated and aromatic hydrocarbons is required.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who need compatibility with glycol-based brake fluids, strong alkalis, amines, ammonia gas, or super-heated steam, since Viton can be vulnerable to those chemicals. Also choose a different elastomer if a softer or harder durometer is required for a specific groove design.\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 heat and fuel resistance for applications up to 400 degrees F.\u003c\/li\u003e\n\u003cli\u003eDurable 75A hardness that customers report holds up under repeated use and prevents deformation.\u003c\/li\u003e\n\u003cli\u003eFits standard AS568A grooves and common equipment like fuel bottles and barrel seals for easy replacement.\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 acids, amines, alkalis, or glycol-based brake fluids, so chemical compatibility must be checked before use.\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\u003e7-3\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e8-1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth \/ cross-section\u003c\/td\u003e\n\u003ctd\u003e1\/4 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 444 Viton O-ring pack of 10 is a sensible, cost-effective choice for anyone needing a reliable seal in fuel, high-heat, or chemically exposed environments where Viton compatibility is appropriate. It offers good durability and a standard size that makes replacements straightforward, but buyers should verify chemical compatibility if their fluids include alkalis, amines, or glycol-based brake fluids.\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 or aliphatic hydrocarbons; customers commonly use them in fuel pumps and related fittings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo they fit standard grooves?\u003c\/strong\u003e\u003cbr\u003eThey are made to the AS568A size standard and should fit standard O-ring grooves for the specified dimensions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat chemicals should be avoided?\u003c\/strong\u003e\u003cbr\u003eAvoid low molecular organic acids, ammonia gas, alkalis, amines, glycol-based brake fluids, and super-heated steam, as Viton can be vulnerable to those substances.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48175752052955,"sku":"B000FOLP0U","price":141.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_93704b9f-bca0-4f01-9648-eaa008314177.jpg?v=1769695802","url":"https:\/\/gearmusthave.com\/products\/444-viton-o-ring-75a-durometer-7-3-4in-id-pack-of-10","provider":"GearMustHave","version":"1.0","type":"link"}