{"product_id":"m3x13-5-viton-o-ring-75a-durometer-13-5-mm-id-pack-of-100","title":"M3x13.5 Viton O-Ring 75A Durometer, 13.5 mm ID - Pack of 100","description":"\u003cp\u003eIn this review the M3x13.5 Viton O-Ring is presented as a workhorse sealing part for technicians and hobbyists who need reliable chemical and heat resistance in small metric sizes. The bottom line: this pack of 100 black Viton rings is worth considering when an engineer or mechanic needs consistent sealing performance across a wide temperature range, and the review focuses on fit, material properties and practical uses rather than marketing claims. It is especially useful where resistance to fuels, oils and many industrial solvents is required.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made of Viton fluorocarbon elastomer for proven resistance to heat, fuels and many chemicals, reducing frequent replacement in compatible environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 75A durometer provides a balance of flexibility and shape retention, helping maintain a durable seal under compression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-section:\u003c\/strong\u003e Round profile forms a tight seal between overlapping cylindrical surfaces, which is ideal for threaded barrels, shafts and fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated for wide temperature use, allowing operation from low temperatures up to high-heat applications when used within material compatibility limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Supplied as a pack of 100, which is convenient for maintenance shops or projects that require many identical seals and reduces downtime for replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis O-ring is aimed at maintenance technicians, small engine mechanics, and DIYers who need a compact, chemically resistant seal in metric sizes, such as replacing seat seals in carburetors or keeping thread protectors in place on automotive parts. The small ID and common size make it a practical spare for firearms threading adapters and certain motorcycle carburetor applications mentioned by users.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include users needing compatibility with strong bases, ammonia, or glycol-based brake fluids, where Viton is vulnerable, and anyone requiring extremely soft or extremely hard durometers outside the 75A range. For specialty polymer needs like EPDM or silicone for steam service, select the appropriate material instead.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGood chemical and fuel resistance for many industrial solvents, making it versatile for maintenance tasks.\u003c\/li\u003e\n\u003cli\u003eComfortable 75A hardness that balances sealing performance and ease of installation.\u003c\/li\u003e\n\u003cli\u003ePack of 100 provides strong value for workshops and repeated-use applications.\u003c\/li\u003e\n\u003cli\u003eCustomers reported reliable fit and seal quality on common threaded barrel and carburetor uses.\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 media like strong alkalis, ammonia gas or glycol-based brake fluids, so material limits must be checked before use.\u003c\/li\u003e\n\u003cli\u003eTemperature guidance varies in sources; confirm the required high-temperature limit for your application before exposure to super-heated steam.\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\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\u003e13.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter (OD)\u003c\/td\u003e\n\u003ctd\u003e19.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross-section Width\u003c\/td\u003e\n\u003ctd\u003e3 mm\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\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe M3x13.5 Viton O-Ring is a practical, cost-effective choice for general maintenance where chemical and heat resistance are required and the 13.5 mm ID size fits. It delivers reliable sealing performance and good value in bulk, making it a sensible pick for workshops and hobbyists who work with fuels, oils and many industrial solvents while observing Viton's material limitations.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eAre these O-rings suitable for fuel and oil applications?\u003c\/strong\u003e\u003cbr\u003eYes; Viton is compatible with many fuels, oils and aromatic and aliphatic hydrocarbons, making these rings suitable for many fuel and oil sealing tasks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature range can these O-rings handle?\u003c\/strong\u003e\u003cbr\u003eThey are designed for wide temperature use; verify specific application limits but they are intended to handle low temperatures and elevated heat within Viton compatibility ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill these protect threaded barrel caps and similar fittings?\u003c\/strong\u003e\u003cbr\u003eCustomers report they work well to keep thread protectors and caps in place and provide a reliable seal on common threaded barrel sizes and some carburetor seat applications.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48240310649051,"sku":"B00NR1EIRA","price":73.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/611g_BwDJoL._SL1500_57027ef6-3d21-4d4e-9c14-bb912ac1521a.jpg?v=1771080967","url":"https:\/\/gearmusthave.com\/products\/m3x13-5-viton-o-ring-75a-durometer-13-5-mm-id-pack-of-100","provider":"GearMustHave","version":"1.0","type":"link"}