how to repaire slip rings

Sometimes, our slip ring is broken down, but how to repaire slip ring? 

Moflon will tell you all:

Reference Parts# of Slip Rings as below：
MP220 series Pancake Slip Ring
slip ring industry depends on economic situations
MT150248 series Through Bore Slip Ring
MUSB2381 series¨CUSB Slip Rings
Slip Rings for Generator & Wind Turbine
Slip ring for packaging machine

Others：
Pri: Next Moflon slip ring makes the traditional harvesters to be automated
Others:
Pneumatic hydraulic electrical slip ring: design and considerations
Through bore slip rings explained.
Types of slip rings
What is the Function of Moog Slip Ring in the Advanced Electrical Machines?
Choosing Slip Rings that Last for Wind turbines
How Does the Optical Slip Ring Function in the Radar Soldiers?