From what I understand, the durability between the two is quite different. The PTFE membranes are used for the filtration of organic solvents where as the PVDF membranes are generally for low protein binding. Furthermore the PTFE membranes typically require a polyethylene support.
When the U.S. and Washington State flags are flown from a cross staff, the U.S. flag flies from the peak and the Washington State flag occupies the position on the right end of the cross staff (the observer's left). Additional Information on Display US Flags.
The visiting officer's flag may be flown from the bow staff (in place of the burgee) or from the port spreader halyard. The starboard-side halyard positions belong to the flag of the owner/captain; the port side halyard positions belong to the visitors flags.