Vacuum Pumps WOB-L Piston Pumps

Standard WOB-L Piston Pumps
Simplicity is the key to the design of the WOB-L piston. As the piston
wobbles, air resistance on upward stroke expands the PTFE seal on the piston
to increase efficiency while compensating for the wobble action. Reliable dry
vacuum pumps and vacuum/pressure stations for physical and aqueous vapor
applications.