{"product_id":"172-viton-o-ring-75a-durometer-8-1-4-in-id-8-7-16-in-od-pack-of-10","title":"172 Viton O-Ring 75A Durometer 8-1\/4 in ID 8-7\/16 in OD - Pack of 10","description":"\u003cp\u003eIn this review the 172 Viton O-ring is assessed for workshops and field repairs where chemical and heat resistance matter most. The bottom line: this pack of 10, black Viton seals is best for technicians and hobbyists who need a dependable replacement O-ring that resists fuels and high temperatures; its biggest selling point is the Viton compound and 75A hardness that combine to hold seals under heat and contact with aromatic and aliphatic hydrocarbons. Customers who need wide temperature range performance and reliable leak resistance will find the value clear.\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, oils, ozone and many 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 performs across most workshop and field temperature conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e 75A hardness gives good penetration resistance and durability for dynamic and static sealing tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-section:\u003c\/strong\u003e Round profile delivers a reliable seal between cylindrical overlapping surfaces to prevent leaks under pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard size:\u003c\/strong\u003e Sized to AS568A equivalent dimensions for straightforward replacement in common equipment that uses 8-1\/4 in ID O-rings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis pack is aimed at maintenance techs, propulsion and fuel-system mechanics, lab personnel, and outdoors equipment owners who need robust O-ring replacements for fittings exposed to fuels, silicone oils and aromatic hydrocarbons. It suits anyone servicing MSA fuel bottles, Remington 1100 barrel seals, Silencerco switchback components and similar gear noted by users.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users needing compatibility with strong alkalis, ammonia gas, glycol-based brake fluids, or super-heated steam, since Viton can be vulnerable to those specific substances and extreme chemistries.\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 seal longevity in many applications.\u003c\/li\u003e\n\u003cli\u003eWide usable temperature range that maintains performance from cold starts to high-heat environments.\u003c\/li\u003e\n\u003cli\u003eGood fit and leak resistance reported by customers when used as replacements in specific equipment.\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 organic acids, strong alkalis, some amines and glycol-based brake fluids, limiting use in certain systems.\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\u003e8-1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e8-7\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross-section Width\u003c\/td\u003e\n\u003ctd\u003e3\/32 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDurometer\u003c\/td\u003e\n\u003ctd\u003e75A shore\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 172 Viton O-ring pack offers solid value for anyone who needs a dependable, heat- and fuel-resistant replacement in common cylindrical seals. Its 75A hardness and broad temperature tolerance make it a practical choice for maintenance and repair tasks, provided the system fluids are compatible with Vitons chemical profile.\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, aromatic and aliphatic hydrocarbons and is commonly used in fuel-system seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperatures can they handle?\u003c\/strong\u003e\u003cbr\u003eThey are usable roughly from -15 degrees F up to 400 degrees F for most sealing applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill they resist all chemicals?\u003c\/strong\u003e\u003cbr\u003eNo, Viton resists many solvents and fuels but is vulnerable to low molecular organic acids, ammonia, alkalis, certain amines and glycol-based brake fluids.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48245077704923,"sku":"B000FN10MO","price":49.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81iyYJCP7YL._SL1500_2c8c40e3-1fa6-4eaf-a06b-18a8810e1b54.jpg?v=1770922056","url":"https:\/\/gearmusthave.com\/products\/172-viton-o-ring-75a-durometer-8-1-4-in-id-8-7-16-in-od-pack-of-10","provider":"GearMustHave","version":"1.0","type":"link"}