We made this gray silicone rubber bulb seal to fit in the extrusion on the hingeless (removable) baggage compartment doors on Airstreams in the late 1960s. On those hatch doors, the T-base slides into a channel on the back side of the doors.
This seal is included free when you buy our extrusions to build a new door, but we're making it available separately, too, so you can do maintenance on any 1965-1968 Airstream with this seal as original.
Sold by the foot. Assembled door shown for context only.
Premium silicone rubber seals are extremely resistant to wear, ageing, weather influences, ozone and UV-light. That means they don't shrink or crack over time like inexpensive vinyl rubber. Silicone has excellent temperature stability in hot and cold climates. It does not "compression set" or deform permanently when compressed.