{"product_id":"365-viton-o-ring-75a-7-in-id-3-16-in-width-heat-fuel-resistant","title":"365 Viton O-Ring 75A, 7 in ID 3\/16 in Width - Heat \u0026 Fuel Resistant","description":"\u003cp\u003eIn this review of the 365 Viton O-Ring the bottom line is straightforward: this pack of ten is for anyone who needs a durable, chemical- and heat-resistant replacement O-ring that holds leaks under demanding conditions. The reviewer found the most compelling reason to buy is the material - genuine Viton fluorocarbon elastomer - which offers reliable resistance to fuels, aromatic and aliphatic hydrocarbons, ozone and weathering while tolerating service temperatures from -15 degrees F up to 400 degrees F. Fit and durability for common hydraulic and sealing tasks are the decisive benefits highlighted by users.\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 resist fuels, oils and many harsh chemicals for long service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Rated for -15 degrees F to 400 degrees F so it remains flexible in cold starts and stable at high operating temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-section:\u003c\/strong\u003e Round cross-section provides a reliable seal between overlapping cylindrical surfaces and helps prevent leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 75A durometer offers a balance of compression resistance and resilience for repeated use without quick extrusion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Works with non-flammable hydraulic fuels, silicone oil, chlorinated and aromatic hydrocarbons, and is suitable for vacuum and ozone-exposed environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Size:\u003c\/strong\u003e AS568A compliant size suited to common industrial and plumbing replacement tasks where a 7 in ID ring is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product suits mechanics, technicians and hobbyists who need a reliable replacement O-ring for fuel systems, hydraulic fittings, Silencerco switchback-type applications, MSA fuel bottle seals or other cylindrical joints exposed to fuels and heat. The pack of ten is convenient for workshops and repeated maintenance tasks.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing compatibility with glycol-based brake fluids, strong alkalis, ammonia gas or super-heated steam, since Viton is vulnerable to those media. If a softer or much lower temperature compound is required, choose a material specified for those extremes.\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 makes these rings reliable in many service environments.\u003c\/li\u003e\n\u003cli\u003eWide temperature tolerance ensures the O-rings remain functional from cold starts to high-heat operation.\u003c\/li\u003e\n\u003cli\u003eCustomers report precise fit and good leak resistance in practical replacements for common gear.\u003c\/li\u003e\n\u003cli\u003ePack of ten offers good value for routine maintenance and multiple repairs.\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 weight organic acids, amines, glycol-based brake fluids or prolonged exposure to super-heated steam.\u003c\/li\u003e\n\u003cli\u003e75A hardness may be too stiff for applications that demand an extremely soft seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMr O-Ring\u003c\/td\u003e\n\u003c\/tr\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\u003c\/td\u003e\n\u003ctd\u003e7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e7-3\/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\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 365 Viton O-Ring pack is a sensible buy for anyone needing sturdy, heat- and fuel-resistant replacement seals; its 75A hardness and Viton formulation deliver dependable leak resistance and durability. It represents good value for workshops and field repairs, provided the service fluids do not include incompatible chemicals like strong amines or glycol-based brake fluid.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these O-rings suitable for fuel system seals?\u003c\/strong\u003e\u003cbr\u003eYes; the Viton material is compatible with many fuels, aromatic and aliphatic hydrocarbons and commonly used silicone oils, making them suitable for fuel system seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperature range can these O-rings handle?\u003c\/strong\u003e\u003cbr\u003eThey are rated for continuous use from -15 degrees F (-26 degrees C) up to 400 degrees F (205 degrees C).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill these work with brake fluid?\u003c\/strong\u003e\u003cbr\u003eNo; Viton is vulnerable to glycol-based brake fluids, so they should not be used where exposure to those fluids is expected.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48236629557467,"sku":"B000FOI27E","price":87.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_6af2dc7f-e320-4ef6-9cb9-5d46cfca114f.jpg?v=1770903594","url":"https:\/\/gearmusthave.com\/products\/365-viton-o-ring-75a-7-in-id-3-16-in-width-heat-fuel-resistant","provider":"GearMustHave","version":"1.0","type":"link"}