{"product_id":"mr-o-ring-021-epdm-o-ring-70a-durometer-15-16-in-id-pack-of-500","title":"Mr O-Ring 021 EPDM O-Ring 70A Durometer, 15\/16 in ID - Pack of 500","description":"\u003cp\u003eIn this review the Mr O-Ring 021 EPDM O-Ring is evaluated for technicians and maintenance buyers who need a large quantity of reliable sealing parts. The bottom line: this pack of 500 EPDM o-rings offers consistent dimensions and broad chemical and weather resistance, making it a sensible bulk choice for preventative maintenance and multiple repair jobs. The reviewer found the 70A durometer EPDM to balance flexibility with durability across a wide temperature range, and the pack size suits workshops, fleets, or facilities that replace seals regularly.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e EPDM compound provides excellent resistance to ozone, sunlight and weather, which reduces seal failure outdoors or in exposed installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurometer:\u003c\/strong\u003e 70A hardness gives a firm but flexible seal that performs well in static and many dynamic sealing applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Nominal and actual sizes (15\/16 in ID vs 0.926 in actual) mean customers can expect close tolerances for fittings specified to AS568 sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical compatibility:\u003c\/strong\u003e Compatible with alcohols, dilute acids and alkalis, brake fluid and many polar solvents, making them versatile across common fluids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e Rated from -55C to 125C for general service and can withstand steam exposure at higher short-term temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack size:\u003c\/strong\u003e Supplied as 500 pieces, suitable for workshops and facilities that require frequent replacement without repeated ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 021 EPDM o-ring pack is best for maintenance crews, plumbing and hydraulic technicians, and operations managers who need a dependable, economical supply of standard AS568-sized seals. The large pack is particularly useful for preventative maintenance programs, service vans, and production lines where having many spare seals on hand reduces downtime.\u003c\/p\u003e\n\u003cp\u003eThose needing specialty elastomers for fuels, petrochemical immersion, or very high temperature continuous service should look elsewhere; EPDM is not recommended for many hydrocarbons and some nonpolar solvents. For precision applications that demand custom sizes or materials other than EPDM, a single-size bulk pack may not be ideal.\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\u003eConsistent actual dimensions close to nominal size help ensure reliable fittings in standard grooves.\u003c\/li\u003e\n\u003cli\u003eGood resistance to ozone, weathering and a range of common fluids, which increases service life outdoors.\u003c\/li\u003e\n\u003cli\u003e70A durometer offers a practical balance of flexibility and seal strength for many general applications.\u003c\/li\u003e\n\u003cli\u003eLarge pack of 500 reduces per-piece cost and lowers ordering frequency for busy shops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEPDM is not compatible with many hydrocarbons and nonpolar solvents, limiting use in fuel-system applications.\u003c\/li\u003e\n\u003cli\u003eBulk packs may be more than needed for occasional DIY users who prefer smaller quantities.\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\u003eEPDM\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\u003eNominal Dimensions\u003c\/td\u003e\n\u003ctd\u003e15\/16 in ID, 1-1\/16 in OD, 1\/16 in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Dimensions\u003c\/td\u003e\n\u003ctd\u003e0.926 in ID, 1.066 in OD, 0.070 in CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric Dimensions\u003c\/td\u003e\n\u003ctd\u003e23.52 mm ID, 27.08 mm OD, 1.78 mm CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-55C to 125C (-67F to 257F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Mr O-Ring 021 EPDM pack of 500 is a practical, cost-effective choice for facilities and technicians who need dependable AS568-sized seals that resist weathering and a wide range of common fluids. It represents good value where EPDM compatibility is acceptable, but buyers dealing with fuels or specialized chemicals should select a different elastomer.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these o-rings compatible with fuel?\u003c\/strong\u003e\u003cbr\u003eEPDM is generally not recommended for hydrocarbons and many fuels; choose a different material for fuel system applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these meet AS568 sizes?\u003c\/strong\u003e\u003cbr\u003eYes, the product is intended to meet AS568 size standards and lists both nominal and actual dimensions for verification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the pack suitable for outdoor use?\u003c\/strong\u003e\u003cbr\u003eYes, EPDM offers excellent resistance to ozone, sunlight and weather, making these suitable for outdoor and exposed installations.\u003c\/p\u003e","brand":"Mr O-Ring","offers":[{"title":"Default Title","offer_id":48243888816347,"sku":"B07R43JL19","price":46.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51Kuv29LevL._SL1000_01fee060-c160-43e1-b2d0-33facede8675.jpg?v=1770925262","url":"https:\/\/gearmusthave.com\/products\/mr-o-ring-021-epdm-o-ring-70a-durometer-15-16-in-id-pack-of-500","provider":"GearMustHave","version":"1.0","type":"link"}