This is a picture of an insulator and a well cover for an early 60's Race Hemi and is made a little different than one for a Street Hemi. The Race Hemi does not have the large rolled edge. It has a plug wire sized hole on top and a 7/16 hole on the bottom. Someone mentioned it may have also appeared on some 6 cylinders. Does anyone know of a supplier or a crossover application for the rubber seal in the picture? I need about 18 of them. Thanks!

Glad hands O-rings work for the cover. Truck stuff. Not sure but I think they come in a bunch of different colors besides red and blue. Keeps all the rocks out on a hemi dragster.

The six cylinder ones are a little shorter on top but look real close. They come ten to a package for some reason from mopar. I will look for the box this afternoon. Pm your number and I can send you a picture of the if you want. They are for 7mm wires so you need to drill them to get a modern 8mm wirs in them.