Rotary shaft seal B1OFSL model is provided with a metal outer surface without an spring on the sealing lip with a dust lip.


  • Product group: Rotary shaft seal
  • Design: B1OFSL = outer surface metal
  • Model: B1OFSL = without spring with dust lip
  • Seal material: NBR 70
  • Colour: black
  • Stiffening ring: non-alloy steel according to DIN EN 10139
  • Tension spring: non-alloy spring steel according to DIN EN 10270-1


Sealing of rotating machine elements such as shafts, hubs and axles.


The B1OFSL is a single-action rotary shaft seal for rotating or pivoting shafts with optional protective lip sealing ­action (B1OFSL) on the side facing away from the medium, against dirt accumulation from the outside.   


Good chemical resistance to many mineral oils and greases.

Operational application limits
Pressure ≤ 0.05/0.5 (Mpa/bar)
Temperature -40°C to +100°C
Peripheral speed ≤ 10 (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.

# Vota code Name Application Material Pressure
Temperature °C Sliding Speed (m/s)
oliekeerring-cassette-combi-mss-seals/b1ofsl B1OFSL B1OFSL (OLIEKEERRING) ROD/AXLE STAAL-NBR 0/0 -40°C +100°C 12.0
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