Rotary shaft seal B1OF model is provided with a metal outer surface without an energised spring on the sealing lip.


  • Product group: Rotary shaft seal
  • Design: B1OF = outer surface rubber-coated
  • Seal material: NBR 70
  • Colour: black
  • Stiffening ring: non-alloy steel according to DIN EN 10139


Secondary sealing against dust, dirt or spray protection seal in electric engines, as a grease retainer.



The B1OF is a single-action rotary shaft seal for rotating or pivoting shafts. The sealing lip design without a spring produces less friction. As a result, the sealing action in comparison to rotary shaft seals with energised springs is reduced. The elastomer outer sheath provides good static sealing, good thermal expansion balance e.g. in light-metal housings, better sealing with greater roughness and secure sealing for split housings as well as good static sealing with thin fluid or gaseous media.


Good chemical resistance to many mineral oils and greases.


Operational application limits
Pressure ≤ 0/0 (Mpa/bar)
Temperature -40°C to +100°C
Peripheral speed ≤ 12 (m/s)



Suitable tools should be used for installation. It is recommended that the installation housing is designed to provide the rotary shaft seal with axial support.



The nominal widths mentioned on the following pages represent the standard dimensions. They are generally in stock or can be delivered at short notice.

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# Vota code Name Application Material Pressure
Temperature °C Sliding Speed (m/s)
oliekeerring-cassette-combi-mss-seals/b1of B1OF B1OF (OLIEKEERRING) ROD/AXLE STAAL-NBR 0/0 -40°C +100°C 12.0
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