MLS Flatpack aluminum electrolytic capacitors from Cornell Dubilier Electronics (CDE) now include a high vibration package, type HVMLS and a high reliability burn-in option, type HRMLS. They can be used for bulk storage, where relatively expensively wet tantalum capacitors had been the only type able to be used.

The MLS capacitors are packaged in flat, stainless steel cans, one-half inch in height with a near hermetic, precision welded construction. The flat form factor allows them to be fit into tight spots, easily cooled, and easily ganged for compact, high bulk storage. 

The high vibration HVMLS has ruggedized internal terminations and compressed can edges that keep the internal winding secure when tested up to 50g of vibration.