{"product_id":"duro-90-o-ring-kit-cat-270-1535-4c-4784","title":"DURO 90 DRING KIT (CAT EQUIVALENT P\/N 270-1535 (4C4784)","description":"\u003cul\u003e\n\u003cli\u003e\u003cspan data-sheets-root=\"1\"\u003eOEM Equivalent D-rings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-sheets-root=\"1\"\u003eNitrile Material \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-sheets-root=\"1\"\u003eDuro 90 Hardness \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-sheets-root=\"1\"\u003e186 Piece Kit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"189\" data-end=\"252\"\u003e\u003cstrong data-start=\"192\" data-end=\"252\"\u003eUses of Nitrile Duro 90 D-Rings in Earthmoving Equipment\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"254\" data-end=\"619\"\u003eNitrile (NBR) Duro 90 D-Rings are engineered for heavy-duty sealing applications where components are exposed to \u003cstrong data-start=\"367\" data-end=\"384\"\u003ehigh pressure\u003c\/strong\u003e, \u003cstrong data-start=\"386\" data-end=\"404\"\u003ehydraulic oils\u003c\/strong\u003e, and \u003cstrong data-start=\"410\" data-end=\"431\"\u003emechanical stress\u003c\/strong\u003e. Their hardness rating of \u003cstrong data-start=\"458\" data-end=\"474\"\u003e90 durometer\u003c\/strong\u003e makes them ideal for demanding earthmoving and heavy-diesel environments that require exceptional extrusion resistance and long-term durability.\u003c\/p\u003e\n\u003ch3 data-start=\"621\" data-end=\"676\"\u003e\u003cstrong data-start=\"625\" data-end=\"676\"\u003eWhere Nitrile Duro 90 D-Rings Are Commonly Used\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"677\" data-end=\"1123\"\u003e\n\u003cli data-start=\"677\" data-end=\"780\"\u003e\n\u003cp data-start=\"679\" data-end=\"780\"\u003e\u003cstrong data-start=\"679\" data-end=\"714\"\u003eHigh-pressure hydraulic systems\u003c\/strong\u003e including pumps, cylinders, valve blocks, and control circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"781\" data-end=\"891\"\u003e\n\u003cp data-start=\"783\" data-end=\"891\"\u003e\u003cstrong data-start=\"783\" data-end=\"842\"\u003eDiesel, engine-oil, and transmission-oil sealing points\u003c\/strong\u003e where strong fluid compatibility is essential.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"892\" data-end=\"1005\"\u003e\n\u003cp data-start=\"894\" data-end=\"1005\"\u003e\u003cstrong data-start=\"894\" data-end=\"939\"\u003eStatic and slow-moving dynamic interfaces\u003c\/strong\u003e that experience substantial mechanical load or pressure spikes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1006\" data-end=\"1123\"\u003e\n\u003cp data-start=\"1008\" data-end=\"1123\"\u003e\u003cstrong data-start=\"1008\" data-end=\"1070\"\u003eHeavy-duty connectors, JIC fittings, and flange interfaces\u003c\/strong\u003e found across mobile plant and earthmoving machinery.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1125\" data-end=\"1164\"\u003e\u003cstrong data-start=\"1129\" data-end=\"1164\"\u003eWhy Duro 90 Nitrile Is Selected\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1165\" data-end=\"1761\"\u003e\n\u003cli data-start=\"1165\" data-end=\"1286\"\u003e\n\u003cp data-start=\"1167\" data-end=\"1286\"\u003e\u003cstrong data-start=\"1167\" data-end=\"1200\"\u003eSuperior extrusion resistance\u003c\/strong\u003e due to the higher hardness (90A), preventing seal blowout in high-pressure systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1287\" data-end=\"1411\"\u003e\n\u003cp data-start=\"1289\" data-end=\"1411\"\u003e\u003cstrong data-start=\"1289\" data-end=\"1344\"\u003eExcellent compatibility with petroleum-based fluids\u003c\/strong\u003e, including hydraulic oil, diesel fuel, engine oil, and gear oil.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1412\" data-end=\"1518\"\u003e\n\u003cp data-start=\"1414\" data-end=\"1518\"\u003e\u003cstrong data-start=\"1414\" data-end=\"1442\"\u003eGood abrasion resistance\u003c\/strong\u003e, making it suitable for equipment operating in harsh, dirty environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1519\" data-end=\"1649\"\u003e\n\u003cp data-start=\"1521\" data-end=\"1649\"\u003e\u003cstrong data-start=\"1521\" data-end=\"1578\"\u003eReliable performance across a broad temperature range\u003c\/strong\u003e, typically from –30 °C to +120 °C depending on compound formulation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1650\" data-end=\"1761\"\u003e\n\u003cp data-start=\"1652\" data-end=\"1761\"\u003e\u003cstrong data-start=\"1652\" data-end=\"1701\"\u003eHigh tear strength and compression resistance\u003c\/strong\u003e, supporting long service life under heavy mechanical loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1763\" data-end=\"1818\"\u003e\u003cstrong data-start=\"1767\" data-end=\"1818\"\u003eLimitations and When Not to Use Nitrile Duro 90\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1819\" data-end=\"2153\"\u003e\n\u003cli data-start=\"1819\" data-end=\"1947\"\u003e\n\u003cp data-start=\"1821\" data-end=\"1947\"\u003e\u003cstrong data-start=\"1821\" data-end=\"1868\"\u003eNot ideal for high-temperature environments\u003c\/strong\u003e above the recommended range; elevated heat may harden or crack the material.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1948\" data-end=\"2042\"\u003e\n\u003cp data-start=\"1950\" data-end=\"2042\"\u003e\u003cstrong data-start=\"1950\" data-end=\"2008\"\u003eLimited resistance to ozone, UV and outdoor weathering\u003c\/strong\u003e compared with silicone or EPDM.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2043\" data-end=\"2153\"\u003e\n\u003cp data-start=\"2045\" data-end=\"2153\"\u003e\u003cstrong data-start=\"2045\" data-end=\"2084\"\u003eLess suited to aggressive chemicals\u003c\/strong\u003e such as brake fluids, certain additives, or highly aromatic fuels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2155\" data-end=\"2206\"\u003e\u003cstrong data-start=\"2159\" data-end=\"2206\"\u003ePractical Examples in Earthmoving Equipment\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2207\" data-end=\"2612\"\u003e\n\u003cli data-start=\"2207\" data-end=\"2325\"\u003e\n\u003cp data-start=\"2209\" data-end=\"2325\"\u003e\u003cstrong data-start=\"2209\" data-end=\"2291\"\u003eHydraulic cylinder end caps, piston interfaces, and rod-side sealing locations\u003c\/strong\u003e subject to high fluid pressure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2326\" data-end=\"2429\"\u003e\n\u003cp data-start=\"2328\" data-end=\"2429\"\u003e\u003cstrong data-start=\"2328\" data-end=\"2380\"\u003eHigh-pressure supply and return line connections\u003c\/strong\u003e, particularly where extrusion risk is present.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2430\" data-end=\"2519\"\u003e\n\u003cp data-start=\"2432\" data-end=\"2519\"\u003e\u003cstrong data-start=\"2432\" data-end=\"2477\"\u003eDrivetrain and engine-oil system fittings\u003c\/strong\u003e requiring robust oil-resistant sealing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2520\" data-end=\"2612\"\u003e\n\u003cp data-start=\"2522\" data-end=\"2612\"\u003e\u003cstrong data-start=\"2522\" data-end=\"2559\"\u003ePump housings and valve manifolds\u003c\/strong\u003e that experience continuous hydraulic pressure loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2614\" data-end=\"2649\"\u003e\u003cstrong data-start=\"2618\" data-end=\"2649\"\u003eMaterial-Selection Guidance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2650\" data-end=\"3045\"\u003e\n\u003cli data-start=\"2650\" data-end=\"2790\"\u003e\n\u003cp data-start=\"2652\" data-end=\"2790\"\u003eChoose \u003cstrong data-start=\"2659\" data-end=\"2678\"\u003eNitrile Duro 90\u003c\/strong\u003e for \u003cstrong data-start=\"2683\" data-end=\"2727\"\u003ehigh-pressure, oil-immersed environments\u003c\/strong\u003e where mechanical load and extrusion resistance are critical.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2791\" data-end=\"2927\"\u003e\n\u003cp data-start=\"2793\" data-end=\"2927\"\u003eFor \u003cstrong data-start=\"2797\" data-end=\"2817\"\u003ehigh-temperature\u003c\/strong\u003e or \u003cstrong data-start=\"2821\" data-end=\"2848\"\u003eoutdoor weather-exposed\u003c\/strong\u003e locations, consider other elastomers better suited to heat or UV resistance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2928\" data-end=\"3045\"\u003e\n\u003cp data-start=\"2930\" data-end=\"3045\"\u003eEnsure the hardness and material type match the \u003cstrong data-start=\"2978\" data-end=\"3044\"\u003esystem’s pressure rating, fluid type, and operating conditions\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HDSA Group","offers":[{"title":"Default Title","offer_id":50067827884326,"sku":"","price":280.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0880\/9008\/3622\/files\/A7104469.jpg?v=1738709079","url":"https:\/\/hdsagroup.info\/products\/duro-90-o-ring-kit-cat-270-1535-4c-4784","provider":"HDSA Group","version":"1.0","type":"link"}