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Freudenberg-NOK Merkel has developed its new Merkel Radiamatic R 55 radial shaft sealing ring. The R 55 has been designed with an integrated deflector lip that protects wind turbine systems against harsh environment elements and eliminates the need to use a second seal.
 
The new seal reduces installation space and eliminates the expense associated with a second seal. At the same time, the seal does not require functional compromises. The Merkel Radiamatic R 55 can even offset radial play or shaft eccentricity without neglecting its sealing and deflecting functions. The Merkel Radiamatic R 55 demonstrates exemplary behavior in shaft contact and the prevention of leakage and wear. The deflecting and sealing lips always stay in contact with the shaft and provide protection and leak protection. In addition, the sealing lip maintains linear contact in the event of positive shaft deflection. Freudenberg-NOK engineers were also able to effectively counter the risk of increased wear due to vacuum formation between the sealing and the deflecting lips through the use of lip texture. This ensures that ample initial grease lubrication for the deflecting lip remains in the space between the seal lips.
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