This particular slip ring was for the radar system of a naval vessel; a rotary joint which allows easy passage of electrical signals and power. This assembly was exposed constantly and contactable media was seawater, rain and the elements.
The seal required had to protect the electrical components of the slip ring assembly from the elements.
The seal envelope was relatively small and the seal required low breakout friction in order to avoid wear and conserve energy
The lifetime requirement of the seals was 6E + cycles over a 10 year period.
Our Sealing Solution
A PTFE spring energised seal; a lightly modified version of a standard profile, with a low load spring and material formulation offering substantial wear resistant properties. Slots in the heel of the seal allowed the provision of dowel pins in the hardware to provide stability in application.
The seals passed initial testing and moved to production. Life cycle requirements are being maintained, with no leakage.