Oil Seals | Radial Shaft Seals
Industrial Applications
- Power transmission
- Oil refineries
- Off-highway
- Manufacturing
- Automotive
How do Oil seals work?
The common radial oil seals works by creating a thin layer of oil between the rubber sealing lip and the shaft which results in the oil lifting the sealing lip clear of the shaft. This thin layer of oil performs a barrier and prevents leakage of the oil past the sealing lip. For this reason rubber oil seals are not suitable for dry running applications or high pressure.
Technical Specifications
*Each type (profile) has a specific operating pressure and surface speed. Contact our experts for more info.
Movement type
Dynamic reciprocating, dynamic rotating
Surface speed
≤ 30 m/s
Pressure
≤ 5 bar (Most types <0.5 bar)
Temperature range
NBR:-40° to +108° C
FKM:-25° to +204° C
Available materials
Seal:NBR, FKM, MVQ, ACM
Spring:Carbon steel, Stainless steel
Housing:Carbon steel, Stainless steel
Available standards
DIN3760 / 3761 and ISO 6194
Oil Seal Types | Profiles
Type AThe type A shaft seal according to DIN3760 is the most commonly used oil seal for low pressure radial sealing. The rubber covered housing provides good sealing capacity even with rough housing bores. |
Type ASThe type AS shaft seal according to DIN3760 is the second most commonly used oil seal for low pressure radial sealing. The rubber covered housing provides good sealing capacity even with rough housing bores. In addition to the A type, the AS has an extra lip for excluding dust. |
Type AOThe type AO shaft seal is the light/economical version of the most common type A oil seal. Suitable for light duty rotary shaft sealing. The rubber covered housing provides good sealing capacity even with rough housing bores. |
Type AS-PThe rubber covered housing provides good sealing capacity even with rough housing bores. In addition to the A type, the AS-P has an extra lip for excluding dust and an reinforced sealing lip for pressures up to 2 BAR. |
Type AS-PXThe rubber covered housing provides good sealing capacity even with rough housing bores. In addition to the A type, the AS-P has an extra lip for excluding dust and an metal reinforced sealing lip for pressures up to 5 BAR. |
Type BThe Type B shaft seal has a steel/metal outer case. Not recommended in applications where housing bore roughness and tolerances are imperfect or where thermal expansion of the housing is expected. |
Type BSThe Type BS shaft seal has a steel/metal outer case. Not recommended in applications where housing bore roughness and tolerances are imperfect or where thermal expansion of the housing is expected. In addition to the B type, this seal also has an extra lip to exclude dust. |
Type BOThe type BO shaft seal is the light/economical version of the type B oil seal. Suitable for light duty rotary shaft sealing. The Type BO shaft seal has a steel/metal outer case. Not recommended in applications where housing bore roughness and tolerances are imperfect or where thermal expansion of the housing is expected. |
Type CThe Type C oil seal has an extra steel/metal reinforced housing. For improved structural stability. Not recommended in applications where housing bore roughness and tolerances are imperfect or where thermal expansion of the housing is expected. |
Type CSThe Type CS oil seal has an extra steel/metal reinforced housing. In addition to the C type, this seal also has an extra lip to exclude dust. Not recommended in applications where housing bore roughness and tolerances are imperfect or where thermal expansion of the housing is expected. |
Type COThe type CO shaft seal is the light/economical version of the type CO oil seal. Suitable for light duty rotary shaft sealing. The Type CO oil seal has an extra steel/metal reinforced housing. Not recommended in applications where housing bore roughness and tolerances are imperfect or where thermal expansion of the housing is expected. |
Type A-DUOThe radial shaft seal for sealing dual fluids. The dual lips with garter springs prevent contamination/mixing between the two fluids |
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