A closure for a container for sealing the contents of the container includes a cap assembly having a first portion that is insertable into a dispensing opening formed in the container and a second portion that is rotatable relative to the first portion. The stacked multi-disk pump includes an inlet port, a stacked multi-disk assembly, a fluid chamber, a central hub, a motor, and an outlet port. A booking engine is provided for receiving commands related to booking the air travel itinerary and determining an appropriate host ticketing environment for processing the commands based on a number of predefined criteria. The contact surface of the invention has multiple pole axial magnetic fields, the contact is suitable used for integrated contact for interrupting high volume current in arc extinguished chamber of vacuum interrupter.