I used two other seals before buying a Steele Brand. It was by far the best sealing. On the '37 the Steele had a little relief formed in it which lets the windshield fold in tighter, the other brands were way to stiff, even in the hot summer weather I could not close the windshield 100%.

As a back up to the front seal, I added a really soft seal to the inside of the windshield frame (cab side) that seals the frame to the cab sheet metal. Its a seal from the trunk of a car, you know the super soft foam rubber stuff. It can't go 100% around the openings due to the hinges and crank arm, but it seals both corners really well. It cut down 90% of the wind noisy and no water ever gets in anymore. With the windshield shut, the extra seal can hardly be seen, with the glass open, it looks like it should be there.

Joe