The sleeve tube that ties the two tubes together(from inner fender to the firewall). Mine was so far gone but it looks like yellow house insulation was the "gasket". Was it? What did you use?
Are you talking about the gap between the fender mounted section and the section the hood hinges mount to (approximately where the arrow is pointing in the pic below)? Macs has these for about $18ea, kinda pricy for a chunk of cheap (probably Chinese made) rubber but they fit great. http://macsautoparts.com/1949-59-ford-mercury-air-duct-ventilator-connector-rubber-ford-ba-7001878-c/camid/F50/cp/JS0R3CHL1082361/
hmmm... yeah hadnt seen those but i wanna use my stock sheetmetal tubes. They look like an oversized screw clap. Each end used some type insulation....????
This is the part he is looking for and you can see the insulation inside. Mine was in decent shape so I'm just reusing mine. I'm curious to know what the insulation stuff is though. http://www.ebay.com/itm/55-56-FORD-CLUB-SEDAN-CROWN-VICTORIA-CENTER-FRESH-AIR-VENT-TUBE-INLET-PIPE-DUCT-/140975999969?pt=Vintage_Car_Truck_Parts_Accessories&hash=item20d2d30be1&vxp=mtr
The one's in your link lasted about 6 months in my '54 and rotted apart from Dennis Carpenter who furnishes most vendors with those,some folks have made them from Motorcycle inner tubes which are 3X thicker, diameter on the those ducts are 4" same as dryer duct.
I made mine from a 3/8 inch thick camp roll. The material is closed cell foam rubber so will not absorb water. I made two tubes by cutting pieces and gluing with contact adhesive. One outer and one inner tube. I indexed the joins 180 degrees apart. Perfect fit and correct thickness to re se the sheetmetal cover. Works great. You can even get a choice of colours. My two cents gents.
Guess that must be the difference between the fancy models and my lowly business coupe, I get cheesy rubber parts and you guys get fancy insulated metal parts.
Gents I believe the original material is horse hair (pubic) and i struggled to find a suitable supplier.Certainly when it gets wet it smells like damp dog! Certainly with my (alternative+ air+vent+fix) post using silicon and the closed cell foam the air vent system works great and seals completely.