RS WAO - Rotary shaft seals

Type/Ref.: Rotary shaft seals
Pressure (bar): ≤ 0/0
Temperature (°C): -40 to +100
Peripheral speed (m/s): ≤ 6

Rotary shaft seal in standard design with a grooved elastomer outer sheath covering a metal insert without an energized spring on the sealing lip. The RS WBO model is provided with a metal outer surface.

Standard materials

NBR70
Color: green/black
Metal insert: non-alloy steel according
to DIN EN 10139

Areas of application

Secondary sealing e.g. as a dust, dirt or spray protection seal in electric engines, as a grease retainer.

Function

The RS WAO/RS WBO is a single action rotary shaft seal for rotating or pivoting shafts. The sealing lip design without a spring produces less friction. As a result the sealing action in comparison to rotary shaft seals with energized springs is reduced. The elastomer outer sheath provides good static sealing, good thermal expansion balance e.g. in light-metal housings, better sealing with greater roughness and secure sealing for split housings as well as good static sealing with thin fluid or gaseous media.
Tight and accurate fitting is achieved by the metal outer casing. The RS WBO model has limited sealing action with thin fluid or gaseous media and in split housings. To guarantee a high level of static sealing on the outer surface, better surface treatment of the housing bore is necessary.

Media

Good chemical resistance to various mineral oils and greases. Please also refer to our media resistance tables on page 17 of this catalogue.

Operational application limits

Pressure (Mpa/bar): 0/0
Temperature (°C): -40 to +100
Peripheral speed (m/s): ≤ 6
Please also refer to our rotational speed diagram on page 15 of this catalogue.

Installation

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. Please also refer to our general installation instructions on page 25 of this catalogue.

Remarks

The nominal widths mentioned on the following pages represent the standard dimensions.

Other dimensions and different designs e.g. double dust protection lip, spiral on the sealing lip, springs or metal inserts made of other steel grades can be produced as well as al kinds of special designs. Minimum quantities may be obligatory for dimensions outside of the standard.