Whats its name?

I know I pulled this from the quarter window area but what is the correct name for this part and who sells it?

 

At the bottom of the quarter glass? Inside or outside?

 

It goes on the body, at the inside back vertical edge of the quarter glass.

 

Back of the quarter glass....behind sail.

 

.....and attaches to the body.

 

Yes it attaches to the body, looks to seal far back area of quarter glass...these are very hard and I need new ones....

 

I don't think those are being reproduced.

 

Yikes really? I would hate to use the old ones again.