{"product_id":"m3x49-viton-fluoroelastomer-o-ring-pack-of-10-durable-seal","title":"M3x49 Viton Fluoroelastomer O-Ring Pack of 10 - Durable Seal","description":"\u003cp\u003eIn this review the M3x49 Viton fluoroelastomer O-ring (pack of 10) is evaluated for installers, hobbyists, and mechanics who need a small, robust sealing solution. The bottom line: it is best for applications that require chemical and heat resistance because the \u003cstrong\u003eViton material\u003c\/strong\u003e and a 75A durometer combine to resist fuels, oils, and high temperatures while maintaining a reliable seal. For anyone replacing worn seals on hydraulic caps or small appliance fittings, these O-rings deliver consistent fit and performance.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Viton fluoroelastomer provides broad chemical and fuel resistance suitable for many industrial fluids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Usable from -15 degrees F to 400 degrees F, offering dependable sealing across hot engine and cold storage conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 75A durometer balances resilience and compression resistance to reduce extrusion and maintain sealing force.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Round cross-section creates a classic seal between overlapping cylindrical surfaces for predictable performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric sizing:\u003c\/strong\u003e 49 mm ID with a 55 mm OD and 3 mm width makes it straightforward to match to metric grooves and caps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack quantity:\u003c\/strong\u003e Ten O-rings provide spare parts for maintenance and multiple repairs without reordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis pack suits mechanics, maintenance technicians, and DIYers who work on small hydraulic fittings, power steering caps, beverage device washers, or thermostat connections where a compact, heat-resistant O-ring is required. Customers who use non-flammable hydraulic fuels, silicone oil, or aromatic hydrocarbons will find the material choice particularly relevant.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing compatibility with ammonia gas, strong alkalis, glycol-based brake fluids, or low molecular weight organic acids, since Viton is vulnerable to those substances. If you require a different hardness or a non-metric size standard, search for a variant matched to that groove or groove standard.\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 fuel resistance for demanding environments.\u003c\/li\u003e\n\u003cli\u003eWide usable temperature range that covers engine bay and hot-process applications.\u003c\/li\u003e\n\u003cli\u003eConsistent metric sizing and pack quantity make replacements easy to manage.\u003c\/li\u003e\n\u003cli\u003eCustomers report reliable fit and durability in automotive and small appliance uses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot suitable for exposure to ammonia, strong alkalis, or certain brake fluids.\u003c\/li\u003e\n\u003cli\u003eThe 3 mm cross-section limits use to grooves and fittings designed for slim O-rings, not heavy-duty static seals.\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 (fluoroelastomer)\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\u003e49 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross-section\/width\u003c\/td\u003e\n\u003ctd\u003e3 mm (round)\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 (-26 C to 205 C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003ePack of 10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe M3x49 Viton O-ring pack is a practical choice for anyone needing a small, heat- and fuel-resistant seal. It represents good value for maintenance kits and routine repairs because of its \u003cstrong\u003edurability\u003c\/strong\u003e and reliable metric sizing, but avoid it where chemical compatibility lists ammonia, strong alkalis, or glycol-based fluids as present.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these O-rings suitable for automotive use?\u003c\/strong\u003e\u003cbr\u003eYes; customers report good fit and function on power steering caps and thermostat connections when compatible fluids are present.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperature extremes can they handle?\u003c\/strong\u003e\u003cbr\u003eThe Viton material is rated from -15 degrees F up to 400 degrees F, making it suitable for most engine and hot-process environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many O-rings come in a pack?\u003c\/strong\u003e\u003cbr\u003eThe product is sold as a pack of 10, which is convenient for replacement and spares.\u003c\/p\u003e","brand":"Small Parts","offers":[{"title":"Default Title","offer_id":48612530094299,"sku":"B005RUTKPO","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_335c54ac-c2ac-4fdf-9c0a-e947f792bea9.jpg?v=1778393538","url":"https:\/\/gearmusthave.com\/products\/m3x49-viton-fluoroelastomer-o-ring-pack-of-10-durable-seal","provider":"GearMustHave","version":"1.0","type":"link"}