Late 1950s Avions are great trailers.  Unfortunately, many parts are still tough to find.  We're working to meet the needs of these owners with reproductions.  

We recently developed this gasket for a customer with a 1960 Avion.  It is installed around the perimeter of the window sash that holds the glass.  

It is made of Santoprene rubber and best glued to the window frame using weatherstrip adhesive.  Let us know if you know of other trailers this gasket was used on.

Gasket is approximately .41" along the long side of the L and .30" along the short side of the L.