Meridian Laboratory - ROTOCON Brushless Slip Rings often outlast conventional brushed slip rings between 5 & 25x without the need for maintenance, adjustment, or downtime. . . https://www.meridianlab.com/products/rotocon-m-multi-channel-end-shaft-slip ...
Separate slip rings without housing | rotarX
ROTOCON M | End-of-Shaft Slip Ring Alternatives (8 Contacts)
Maintenance Free Waterproof Alternative To Slip Rings :Datum Electronics