Slotted Leveling Shims are used for shaft alignment of rotating equipment.
The power source (motor/engine) shaft must be aligned with the mating equipment shaft (pump, compressor, gearbox, etc).
Without proper alignment, equipment may experience damaging vibration or excessive shaft and bearing wear all resulting in mechanical breakdown.
Maudlin Products Straight Leg Advantages 
Maudlin Products Straight Leg slotted leveling shims have the tightest tolerances in the industry. Shims .001″ through .031″ are as tight as the stainless steel industry can supply us. Sizes .050″ through .125″ are made from re-rolled material which reduces thickness tolerances to +/- .002″. Our shims are not only the tightest in the industry they are also the flattest.