{"product_id":"330ft-8-4-mm-silicone-o-ring-cord-stock-70a-red-10-ft","title":".330ft (8.4 mm) Silicone O-Ring Cord Stock 70A - Red 10 ft","description":"\u003cp\u003eOur review of the.330' (8.4 mm) Silicone O-Ring Cord Stock finds it best suited to technicians, hobbyists, and maintenance professionals who need a resilient, heat-tolerant sealing material that is easy to size and form. The single biggest reason to buy is its combination of a mid-range \u003cstrong\u003e70A durometer\u003c\/strong\u003e and an exceptionally wide usable temperature range, which makes this red silicone cord versatile for gaskets, custom O-rings, and repair tasks where chemical and weather resistance matter.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Silicone construction provides reliable resistance to ozone, weather, and many oils, making it suitable for outdoor and automotive applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e The 70A durometer balances flexibility and shape retention so the cord can be formed into seals that compress predictably.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e A very wide operating range allows use in extreme cold and high-heat environments without rapid degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength and cross-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 continuous seals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the U.S.A.:\u003c\/strong\u003e Domestic manufacture ensures consistent quality control and traceability for industrial use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical compatibility:\u003c\/strong\u003e Resistant to many detergents, salt water, non-petroleum brake fluids, and certain hydraulic fluids used where fire resistance is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis cord is ideal for maintenance shops, HVAC and plumbing technicians, and DIYers who need a durable, heat-resistant sealing material that can be cut and spliced to form custom O-rings or gasket profiles. It works well where exposure to weather, ozone, or high molecular weight chlorinated aromatics is expected.\u003c\/p\u003e\n\u003cp\u003eThose who require strong resistance to aromatic hydrocarbons, concentrated acids or bases, prolonged steam above 250 degrees F, or high mechanical abrasion should look at alternative elastomers; silicone is not the best choice for heavy abrasion or certain solvent exposures.\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\u003eGood balance of flexibility and firmness from the 70A durometer for consistent sealing.\u003c\/li\u003e\n\u003cli\u003eWide usable temperature window supports extreme cold and high-heat applications.\u003c\/li\u003e\n\u003cli\u003eBroad resistance to ozone, weather, salt water, and many oils and hydraulic fluids.\u003c\/li\u003e\n\u003cli\u003eLong 10 ft length and round cross-section make it economical for multiple custom seals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLess resistant to mechanical abrasion and certain solvents such as benzene and trichloroethylene, so it can fail in heavy-wear or aggressive chemical environments.\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\u003eSilicone\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\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e.330' (8.4 mm)\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 degrees F (-60 degrees C) to 437 degrees F (225 degrees C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of origin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe.330' silicone O-ring cord stock is a practical, cost-effective choice for users needing a heat-tolerant, weather-resistant material for custom seals and repairs. It delivers dependable performance across a wide temperature range and offers good chemical resistance for many industrial fluids, making it a strong value for general sealing tasks while users with heavy abrasion or harsh solvent exposures should consider other compounds.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this cord be used to make custom O-rings?\u003c\/strong\u003e\u003cbr\u003eYes, the round 8.4 mm cross-section and 10 ft length are well suited for cutting and joining custom O-rings and continuous seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperatures can the silicone handle?\u003c\/strong\u003e\u003cbr\u003eThe material is rated for extreme temperatures roughly from -76 degrees F (-60 degrees C) up to 437 degrees F (225 degrees C).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this silicone resistant to oils and hydraulic fluids?\u003c\/strong\u003e\u003cbr\u003eIt is resistant to many engine oils, non-petroleum brake fluids, and certain hydraulic fluids, but it is vulnerable to some aromatic and chlorinated hydrocarbons and strong acids or bases.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48662517121243,"sku":"B00R0VY5ZI","price":58.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71AOKKbdBAL._SL1500_dfa67fb3-7af1-46a8-b67c-cde8355d28a4.jpg?v=1778674761","url":"https:\/\/gearmusthave.com\/products\/330ft-8-4-mm-silicone-o-ring-cord-stock-70a-red-10-ft","provider":"GearMustHave","version":"1.0","type":"link"}