Ideal for: Clean pumping applications Laboratory and analytical applications Backing turbomolecular pumps Ultimate Vacuum as low as 7.5 x 10-3 torr Available in displacements from 4.0 - 21.2 ft3/min (cfm) Grease lubricated bearings Oil-free pumping chamber Water vapor capacity of 25g/day Manufacturer recommended service interval of 16,000 hours