Fabric shaft seal WGB

The shaft seal type WGB is used mainly in tunnel boring machines as primary seal to protect the main seal.
It is made of very resistant, fabric-reinforced elastomers that withstand hard operating conditions, especially in applications with water and abrasive materials. The sealing lip is supported by an o-ring as a preload element.
The operating conditions of this seal are max. 3 bar at a sliding speed of max. 2 m/s.
Pressures of up to 10 bar are possible under static conditions.

Application Range
Temperature NBR/Fabric: -30 °C / +100 °C (+120)
Sliding speed NBR/Fabric: ≤ 2 m/s

Temperature HNBR/Fabric: -40 °C / +150 °C (+175)
Sliding speed HNBR/Fabric: ≤ 3 m/s

Temperature FKM/Fabric: -20 °C / +200 °C (+250)
Sliding speed FKM/Fabric: ≤ 4 m/s

Other materials are available for very high or very low operating temperatures. For detailled information, please look at the specific PDF catalogue or contact our application engineers.

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