Hubata Seals Ltd.

Type/Ref.: Rotary shaft seals
Pressure (bar): ≤ 0.05/0.5
Temperature (°C): -40 to +100
Peripheral speed (m/s): ≤ 12

Rotary shaft seal in standard design with a metal outer surface and a spring-energised sealing lip made of elastomer. In addition, the standard model is available with a protective lip (RS WBS) on the air side.

Standard materials

NBR70 Color: black
Energized spring: non-alloy spring steel according to DIN EN 10270-1 Metal housing: non-alloy steel according to DIN EN 10139

Areas of application

Sealing of rotating machine elements such as shafts, hubs and axles.

Function

The WB/WBS is a single action rotary shaft seal for rotating or pivoting shafts with optional protective lip sealing action (RS WBS) on the side facing away from the medium, against dirt accumulation from the outside. Tight and accurate fitting is achieved by the metal outer surface. The RS WB/RS WBS model has limited sealing action with thin fluid or gaseous media and with split housings.
To guarantee a high degree of static sealing on the outer surface, better surface treatment of the housing bore is required or an additional coat of paint should be applied to the outer surface.

Media

Good chemical resistance to diverse mineral oils and greases. Please also refer to our media resistance tables on page 17 of this catalogue.
Operational application limits
Pressure (Mpa/bar): ≤ 0.05/0.5
Temperature (°C): -40 to +100
Peripheral speed (m/s): ≤ 12
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, spring or metal insert made of other steel grades can be produced as well as all kinds of special designs. RS WB/RS WBS are available with an additional coat of paint.

Minimum quantities may be obligatory for dimensions outside of the standard.