Capsules Slip Ring The PSR-Cs slip ring capsule is a standard, off-the-shelf ,no through bore series product, that uses gold contacts at the rotary interface. Color-coded lead wires are used on both the stator and rotor for simplified electrical connections. Using a 90o V-groove ring design for each ring, the PSR-Cs provides smoother running, lower torque low contact wear rates than competitive slip ring. PSR-Cs include PSR-C6, PSR-C12, PSR-C15,,PSR-C18,PSR-C24 slip ring model, provides 6, 12,15, 18,24 circuit configurations.