Radial seal RF
rotaryelastomerNBR

Radial seal - RF - ULMAN Dichtungstechnik GmbH - rotary / elastomer / NBR
Radial seal - RF - ULMAN Dichtungstechnik GmbH - rotary / elastomer / NBR
Radial seal - RF - ULMAN Dichtungstechnik GmbH - rotary / elastomer / NBR - image - 2
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Characteristics

Type
rotary
Material
metal, elastomer, NBR, FKM
Configuration
circular
Application
for rotating shafts, for radial shaft
Fluid
oil, gas
Other characteristics
dynamic, single-acting, radial, dust protection, with spring
Temperature limit

Max.: 200 °C
(392 °F)

Min.: -30 °C
(-22 °F)

Pressure limit

Max.: 50,000 Pa
(7.3 psi)

Min.: 0 Pa
(0 psi)

Description

Product description
The Radial Oil Seal Type RF is a rotary shaft seal manufactured to DIN 3760 (design type CS). It has a metal outer diameter with an additional metal insert to ensure an increased press fit in bores under rough conditions. The sealing element is an elastomer lip with an inserted tension spring and an additional dust lip for applications with high external dust content. The seal is suitable for unpressurized rotary applications and for low-viscosity media or gases when compatible surface treatments are applied.

Fields of application
  • static
  • dynamic
  • single-acting
  • double-acting
  • linear motion
  • rotating shafts
  • oscillating shafts

Main use
Unpressurized sealing for rotating shafts in housings with minimal pressure fluctuations.

Materials
  • Elastomers (standard: NBR, FKM)
  • Metal (outer ring, insert)
  • Other materials and compounds available on request

Technical values (overview)
  • Available elastomers: NBR, FKM
  • Typical maximum pressure (NBR): up to 0.05 MPa
  • Temperature range (NBR): -30 °C to +100 °C (material dependent)
  • Typical maximum pressure (FKM): up to 0.05 MPa
  • Temperature range (FKM): -20 °C to +200 °C (material dependent)
  • Surface speed: dependent on material and shaft diameter
  • Note: Maximum temperature, speed and pressure values are not simultaneously applicable and depend on material and media

Technical specifications
  • Denomination: Oil Seal Type RF
  • Standard / design: DIN 3760, design type CS
  • Outer construction: metal outer diameter with additional metal insert for increased press fit
  • Sealing element: elastomer lip(s) with inserted tension spring
  • Additional features: dust lip for high external dust content
  • Main applications: rotating shafts in housings with no or minimal pressure fluctuations; suitable for low-viscosity media and gases if surface treatment is appropriate
  • Standard elastomers: NBR, FKM (other materials on request)
  • Typical maximum pressure: up to 0.05 MPa
  • Temperature ranges (material dependent): NBR -30 °C to +100 °C; FKM -20 °C to +200 °C
  • Speed: depends on selected material and shaft diameter

Exhibitions

Meet this supplier at the following exhibition(s):

Motek Messe Stuttgart
Motek Messe Stuttgart

6-08 Oct 2026 Stuttgart (Germany) Hall 4 - Stand 4420

  • More information

    Other ULMAN Dichtungstechnik GmbH products

    Rotary Seals

    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.