A round flexible sheet, which is part of the negative and positive pressure control valves. Its function is to form a tight seal over the adjusted circular openings in the control valves during part of the operating cycle.
NSN 6685-01-299-1012
NSN 6320-01-314-8017
NSN 5950-00-284-7294
NSN 5920-01-535-7477
NSN 5960-00-858-1168
NSN 5999-01-369-9669
NSN 5985-00-265-2942
NSN 6220-01-574-6061
NSN 5998-01-170-0296
NSN 6135-01-394-4160
NSN 5965-00-729-6835
NSN 6645-01-185-6210