Older boat rubber window gasket. You can see how "gap" from shrinkage was siliconed.This thread suggest a possible replacement source:
http://www.c-brats.com/viewtopic.php?t=11820
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From:
cemiii (cemiii)
(Fri Aug 14 22:12:36 2009)
This thread suggest a possible replacement source:
http://www.c-brats.com/viewtopic.php?t=11820