The subject invention provides a composition and a process for forming a flexible polyurethane foam sealing device having improved compression set properties at increased temperatures. Non-callback options can also be presented to the respective requester. The agent has program instructions configured to execute autonomously on the client node to perform a processing function. The downlink channel DC comprises a synchronization channel SYNCH, a general broadcast channel GBCCH as well as an optional broadcast channel OBCCH. The surfaces of the nozzle plates of the respective head chips are flush with one another. Wherein the sound signal produced by the effect impacts upon the sensor.