1960 Chrysler Turn Signal Housing Gaskets
from Detroit Muscle Technologies
(DMT) as a package of 4 gaskets (2 inner and 2 outer)
for the lens to housing and for the housing to body.
Made from .125" thick gray foam rubber like originals,
the DMT part number is CCH6060PL01.
Priced at $8.00 for the package,
you can order direct from DMT or use their listing on Ebay.