{"product_id":"the-timken-company-5521-oil-seal","title":"The Timken Company 5521 Oil Seal","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"645\"\u003eThe Timken National Oil Seal 5521 is a heavy-duty seal kit designed to retain lubricants while preventing dirt, dust, moisture, and other contaminants from entering rotating shaft systems. Featuring a spring-loaded multi-lip polyacrylate sealing element and a solid steel case with Redi-Coat protection, it provides dependable sealing performance in industrial gearboxes, pumps, electric motors, conveyors, agricultural equipment, and power transmission machinery. It is commonly used for equipment replacement, rebuilds, and preventive maintenance in demanding oil-lubricated applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"647\" data-end=\"664\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"665\" data-end=\"1145\"\u003eThe Timken National Oil Seal 5521 is engineered for rotary shaft sealing applications requiring reliable lubricant retention and enhanced contaminant exclusion. Its Type 41 multi-lip design and polyacrylate sealing material make it suitable for industrial gearboxes, pumps, compressors, electric motors, conveyor systems, manufacturing equipment, and agricultural machinery operating at elevated temperatures and demanding service conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1147\" data-end=\"1176\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1177\" data-end=\"1963\"\u003e• Manufacturer Part Number (MPN): 5521\u003cbr data-start=\"1215\" data-end=\"1218\"\u003e• Manufacturer: Timken\u003cbr data-start=\"1240\" data-end=\"1243\"\u003e• Brand: National\u003cbr data-start=\"1260\" data-end=\"1263\"\u003e• Product Type: Seal Kit\u003cbr data-start=\"1287\" data-end=\"1290\"\u003e• Series: 5000 Series\u003cbr data-start=\"1311\" data-end=\"1314\"\u003e• Seal Type: Type 41 Multi-Lip with Loaded Spring\u003cbr data-start=\"1363\" data-end=\"1366\"\u003e• Material: Polyacrylate (ACM)\u003cbr data-start=\"1396\" data-end=\"1399\"\u003e• Lip Material: Polyacrylate\u003cbr data-start=\"1427\" data-end=\"1430\" data-is-only-node=\"\"\u003e• Case Material: Steel with Redi-Coat\u003cbr data-start=\"1467\" data-end=\"1470\"\u003e• Measurement System: Inch\u003cbr data-start=\"1496\" data-end=\"1499\"\u003e• Shaft Diameter (ID): 2.120 in (53.848 mm)\u003cbr data-start=\"1542\" data-end=\"1545\"\u003e• Outside Diameter (OD): 3.505 in (89.027 mm)\u003cbr data-start=\"1590\" data-end=\"1593\"\u003e• Housing Bore: 3.500 in (88.900 mm)\u003cbr data-start=\"1629\" data-end=\"1632\"\u003e• Overall Width: 0.750 in (19.050 mm)\u003cbr data-start=\"1669\" data-end=\"1672\"\u003e• Construction: Solid\u003cbr data-start=\"1693\" data-end=\"1696\"\u003e• Lip Design: Multi-Lip with Spring\u003cbr data-start=\"1731\" data-end=\"1734\"\u003e• Weight: Approximately 0.55 lb (0.25 kg)\u003cbr data-start=\"1775\" data-end=\"1778\"\u003e• Typical Applications: Industrial Gearboxes, Pumps, Electric Motors, Compressors, Conveyors, Agricultural Equipment, Power Transmission Machinery. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1965\" data-end=\"1989\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1990\" data-end=\"2152\"\u003e• SKF Equivalent Multi-Lip Oil Seal\u003cbr data-start=\"2025\" data-end=\"2028\"\u003e• CR (Chicago Rawhide) Equivalent Oil Seal\u003cbr data-start=\"2070\" data-end=\"2073\"\u003e• National Type 41 Multi-Lip Oil Seal Kit\u003c\/p\u003e","brand":"Timken","offers":[{"title":"New","offer_id":51714045608238,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_6f52e5bf-e183-46e7-b511-8bb51c48e349.jpg?v=1770414828","url":"https:\/\/plgautomation.com\/products\/the-timken-company-5521-oil-seal","provider":"PLG Automation ","version":"1.0","type":"link"}