lipped seal / O-ring / NBR / PTFE
RDI series Hunger

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lipped seal / O-ring / NBR / PTFE lipped seal / O-ring / NBR / PTFE - RDI series


  • Type:

    lipped, O-ring

  • Material:


  • .application:

    for rotating shafts

  • Temperature limit:

    Max.: 100 °C (212 °F)

    Min.: -35 °C (-31 °F)

  • Pressure limit:

    360 bar (5,221 psi)

  • Diameter:

    Max.: 600 mm

    Min.: 50 mm


Hunger RDI rotary seal can be used as a sealing element
for rotating machine parts. They are mainly used
in rotary feed units for separation of oil or other fluids
at different pressures and can be subjected to pressure
on both sides. Since the seal requires only a small
installation space, the external dimensions of rotary
feed units can be kept to a minimum.
The RDI is suitable for relatively high pressures with
low peripheral speeds. The seal consists of 4 parts,
an elastic element held by L-rings on which the sealing
thrust ring lies. The L-rings on both sides protect the
entire seal against movement in the seal groove.
With working pressures above 300 bar and a surface
sliding speed above 0.1 m/second, the working temperature
must not exceed 70°C (158°F).
Due to its greater static contact surface, the RDI seal
is preferred to the RDA. Depending on the specifications
and operating conditions it is recommended to
have the running surface hardened to approx. 56 HRC
or hard chromium plated.