{"id":212,"date":"2026-02-21T21:06:54","date_gmt":"2026-02-21T21:06:54","guid":{"rendered":"https:\/\/systemseals.orangesprocket.com\/?post_type=product&p=212"},"modified":"2026-03-17T20:58:10","modified_gmt":"2026-03-17T20:58:10","slug":"421-series-rotary-seal","status":"publish","type":"product","link":"https:\/\/www.systemseals.com\/en\/products\/421-series-rotary-seal\/","title":{"rendered":"421 Rotary Seal"},"content":{"rendered":"
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421 Series<\/p>\r\n <\/div>\r\n

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The 421 Series Rotary Seal is a robust rotary internal bearing and primary seals from water splash and heavy concentrations of debris. This is commonly used on work rolls and roll neck bearings in steel and aluminum mills. The design of the seal lip is much more robust than traditional rotary face seals providing maximum performance in harsh conditions.<\/h3>\n <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n<\/section>\r\n
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Installation Drawing <\/h2>\r\n <\/div>\r\n
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Material Ranges <\/h2>\r\n <\/div>\r\n
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The 421 Series Mill-Duty Rotary Splash Guard features high-grade NBR. Also available in HNBR for improved abrasion resistance and FPM compounds for higher temperatures.<\/p>\n <\/div>\r\n \r\n \r\n \r\n \r\n
Nitrile NBR<\/td>\r\n MN01<\/td>\r\n <\/tr>\r\n
Hydrogenated HNBR<\/td>\r\n MN03<\/td>\r\n <\/tr>\r\n
Fluroelastomer FPM<\/td>\r\n MF01<\/td>\r\n <\/tr>\r\n <\/table>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n\r\n \r\n \r\n
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Temperature Ranges <\/h2>\r\n <\/div>\r\n
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MN01<\/div>\r\n <\/div>\r\n
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\u00b0F<\/div>\r\n <\/div>\r\n
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hydraulic oil<\/div>\r\n
-30\u2026+100<\/div>\r\n <\/div>\r\n
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hydraulic oil<\/div>\r\n
-22\u2026+212<\/div>\r\n <\/div>\r\n
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water oil emulsions (HFA<\/div>\r\n
+5\u2026+60<\/div>\r\n <\/div>\r\n
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water oil emulsions (HFA<\/div>\r\n
+41\u2026+140<\/div>\r\n <\/div>\r\n
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water-glycol fluids (HFC)<\/div>\r\n
-30\u2026+60<\/div>\r\n <\/div>\r\n
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water-glycol fluids (HFC)<\/div>\r\n
-22\u2026+140<\/div>\r\n <\/div>\r\n
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polyol esters (HFD)<\/div>\r\n
-30\u2026+80<\/div>\r\n <\/div>\r\n
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polyol esters (HFD)<\/div>\r\n
-22\u2026+176<\/div>\r\n <\/div>\r\n
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water<\/div>\r\n
+5\u2026+100<\/div>\r\n <\/div>\r\n
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water<\/div>\r\n
+41\u2026+212<\/div>\r\n <\/div>\r\n
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Speed<\/div>\r\n
20m\/s (65ft\/sec)<\/div>\r\n <\/div>\r\n
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Speed<\/div>\r\n
20m\/s (65ft\/sec)<\/div>\r\n <\/div>\r\n
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Pressure<\/div>\r\n
0.03 MPa (4.35 psi)<\/div>\r\n <\/div>\r\n
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Pressure<\/div>\r\n
0.03 MPa (4.35 psi)<\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n <\/div>\r\n\r\n