The Top Cover together with the Base Plate form the enclosure system for the Hard Disk Drive. Its primary function is to provide sealing, protection and robustness to the Hard Disk Drive.

Apart from the above primary function, in today’s Permanently sealed  Helium Filled Hard Disk Drive, the Top Cover’s function goes beyond the need of providing an air tight seal to a full hermetic seal. The manufacture of such covers require special know-how to ensure our covers work seamlessly with our customers’ sealing processes.

Top Covers are typically designed for acoustics and vibration and manufactured with pre-laminated materials and/or dampers which can be implemented with different materials and damping adhesives.