An oil seal includes a first seal for sealing an engine side and a second seal for sealing a flywheel side. Two types of such switch cells, filler switches and sealer switches, may be provided using the unoccupied locations. The fibers with electric conductivity are woven into mesh by a general knitting machine like a machine for tricot. The nonconformance management module will either invoke a pump programming change, or schedule and appointment or notify the patient that a non-programming change should be made. Another aspect of the imaging system switching device further has an original roller so that the switching device of the imaging system can simultaneously scan and print.