{"product_id":"625in-silicone-o-ring-cord-stock-70a-durometer-10-ft-red","title":".625in Silicone O-Ring Cord Stock 70A Durometer - 10 ft Red","description":"\u003cp\u003eIn this review of the.625in silicone O-ring cord stock, the bottom line is straightforward: this red silicone cord is best for technicians and DIYers who need a reliable, temperature-tolerant sealing material for custom O-rings and gaskets. The reviewer found that the cord's \u003cstrong\u003e70A durometer\u003c\/strong\u003e offers a balance of flexibility and firmness, and its wide operating temperature range makes it suitable for many industrial and maintenance tasks where silicone compatibility matters.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Made of silicone, the cord resists ozone, weather and many oils, making it useful for outdoor and automotive exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated for extreme temperatures, the cord performs across cold and hot cycles without hardening or cracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e The 70A durometer provides a mid-range firmness that seals well under compression while remaining pliable for installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength and section:\u003c\/strong\u003e Supplied as a 10 ft piece with a round cross section, it is convenient for cutting multiple custom O-rings or short gasket runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in the U S A, the cord meets expectations for manufacturing traceability and consistent quality.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe cord is aimed at mechanics, maintenance technicians, and hobbyists who need to produce custom O-rings or simple gasket profiles from a material that tolerates a wide range of chemicals and temperatures. It is particularly useful when resistance to ozone, detergents, salt water, and non-petroleum hydraulic fluids is required.\u003c\/p\u003e\u003cp\u003eThose who require resistance to aromatic hydrocarbons, strong acids or bases, or continuous steam exposure above 250 degrees F should look elsewhere or verify compatibility, since silicone has known weaknesses with those substances and conditions.\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 resistance to ozone, weather, engine oils, and many hydraulic fluids.\u003c\/li\u003e\n\u003cli\u003eWide usable temperature range that handles both cold and high-heat environments.\u003c\/li\u003e\n\u003cli\u003e70A durometer balances sealing performance with ease of handling and cutting.\u003c\/li\u003e\n\u003cli\u003eMade in the U S A, which many users consider a mark of consistent quality.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eSilicone is vulnerable to aromatic and chlorinated hydrocarbons and prolonged steam above 250 degrees F, limiting use with some solvents and high-temperature steam systems.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e.625 in (5\/8 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSilicone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDurometer\u003c\/td\u003e\n\u003ctd\u003e70A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e10 ft piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003e-76 F (-60 C) to 437 F (225 C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCross section\u003c\/td\u003e\n\u003ctd\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMade in the U S A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThis.625in silicone O-ring cord is a sensible choice for anyone who needs a durable, easy-to-cut seal material with broad temperature capability and good resistance to weathering and many oils. It represents good value for creating custom O-rings and gaskets, provided the user avoids solvents and steam conditions where silicone performs poorly.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan I cut this cord to make custom O-rings?\u003c\/strong\u003e\u003cbr\u003eYes, the 10 ft round cord is intended to be cut and spliced or glued into custom O-rings and gasket sections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this cord suitable for continuous steam service?\u003c\/strong\u003e\u003cbr\u003eNo, silicone degrades under prolonged steam exposure above 250 degrees F, so it is not recommended for continuous high-temperature steam systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it resist automotive fluids?\u003c\/strong\u003e\u003cbr\u003eSilicone resists many engine and transmission oils and non-petroleum brake fluids, but avoid exposure to aromatic hydrocarbons and certain chlorinated solvents.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48601359024347,"sku":"B00R0VYWTM","price":157.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71AOKKbdBAL._SL1500_724e668a-3964-4075-a466-b8f1628b8779.jpg?v=1778423951","url":"https:\/\/gearmusthave.com\/products\/625in-silicone-o-ring-cord-stock-70a-durometer-10-ft-red","provider":"GearMustHave","version":"1.0","type":"link"}