Radial seal RI
rotaryelastomerNBR

Radial seal - RI - ULMAN Dichtungstechnik GmbH - rotary / elastomer / NBR
Radial seal - RI - ULMAN Dichtungstechnik GmbH - rotary / elastomer / NBR
Radial seal - RI - 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
Other characteristics
dynamic, static, single-acting, double-acting, radial, with spring
Temperature limit

Min.: -30 °C
(-22 °F)

Max.: 200 °C
(392 °F)

Pressure limit

Min.: 0 Pa
(0 psi)

Max.: 50,000 Pa
(7.3 psi)

Description

Description
The Radial Oil Seal Type RI is a rotary shaft seal with a waved elastomeric outer diameter designed for easy installation and improved static tightness in the groove. The sealing lip includes an inserted tension spring. It is intended for rotating shafts in housings with no or minimal pressure fluctuations. Standard elastomer materials are NBR and FKM; other materials available on request.

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


Main use
unpressurized sealing for rotating shafts

Materials
elastomers, metal. Standard elastomers: NBR, FKM

Technical values
  • NBR variant: Pressure up to 0.05 MPa; Temperature range -30°C to +100°C (material dependent); Speed: dependent on material and diameter
  • FKM variant: Pressure up to 0.05 MPa; Temperature range -20°C to +200°C (material dependent); Speed: dependent on material and diameter
  • Note: Maximum values for temperature, speed and pressure are not simultaneously applicable; values vary depending on material and medium


Specifications / technical characteristics
  • Commercial name: Oil Seal Type RI
  • Design: rotary shaft seal with waved outer diameter (similar to RA design)
  • Outer diameter: elastomeric
  • Spring: inserted tension spring
  • Main use: unpressurized sealing for rotating shafts
  • Suitable for housings with no or minimal pressure fluctuations
  • Materials: elastomers (standard: NBR, FKM), metal; other materials on request
  • Maximum pressure (typ.): up to 0.05 MPa
  • Temperature ranges (material dependent): NBR: -30°C to +100°C; FKM: -20°C to +200°C
  • Rotational speed: dependent on material and diameter
  • Applicable motions: rotating, oscillating, linear, single acting, double acting

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.