Radial shaft seals

A radial shaft seal is a lip seal that is mounted on a rotating shaft to retain the lubricant inside the assembly and stop the entry of dust, water or particles. It is selected by crossing three measurements: the shaft diameter (d), the housing diameter (D) and the seal height (h). Those three values define the seat and the lip; if the shaft is worn or the housing is not cylindrical, it is advisable to evaluate a wear sleeve or a seal with another geometry before requesting a quote.

In the catalog you will find references such as HMS5 RG, RN-2X10.8 B/M8/M10VX599, RC-20X30 CD, MVR1-60 and PI 202320. The acronyms describe the construction: HMS identifies single lip seals with spring, RG indicates the secondary lip variant for greater exclusion, RC corresponds to seals with reinforced case, MVR to multiple lip designs and PI to polyurethane profiles for more demanding service. The numerical nomenclature that follows the letters usually orders shaft, housing and height, and in codes with slashes lip or material variants are added.

Typical applications are gearboxes, reducers, pumps, electric motors, transmission shafts and process equipment. In all those cases the seal works together with the bearing: if the lip loses contact or the elastomer hardens, the lubricant migrates and the contaminant enters, and the bearing failure appears sooner. That is why the selection is not limited to the measurement: the type of lubricant, the shaft speed and the working temperature also matter.

To request a quote for a radial shaft seal you need the complete code or, if you do not have it, the shaft, housing and height measurements, plus a photo or the drawing of the housing. If you have the equivalence from another brand, it also serves to cross. We work with SKF and DBH, and over 7,401 references in this subcategory you can consult via WhatsApp or email indicating the code and quantity.

MR Accesorios Industriales sells radial shaft seals in Buenos Aires, Argentina, with more than 80 years of experience in the industrial field. If the seal is part of an assembly with bearings, housings or power transmission, it is advisable to review the entire system so that the new seal does not inherit the problem of the shaft or the housing.