Chrysler Winged Radiator Cap Gasket -Problem

[cricketkj26]

When I sent out  the  radiator cap to be nickel plated I thought I was going to remove the gasket out of the cap and then put a new in a new one  upon return of the cap.

I pulled out ( 6) six layers of round  1/16" thk  cloth inserted black rubber  gaskets  out of the center of the cap. What the heck !  Is there some kind of round solid backing plate

that is suppose to be inside the cap that would be underneath a gasket ?  Is the gskt suppose to be cork ?  What thickness ?   See below photo    1926  cap

Thanks, Cricket

 

[Spinneyhill]

In my 1930 Dodge 8, I tried cork. It didn't last. The top of the radiator neck is not dead smooth so the cork came apart.

 

The NOS caps I have seen have some kind of paper gasket in them. Nowadays I suppose you could use viton.

[keiser31]

If I remember correctly on my 1926 Chrysler, there was a brass disc inserted into the cap first and then a red, cardboard, fiber type of gasket. That way, the brass disc created a firm backing behind the fiber. It WAS when I was in high school, so my memory on that may be fuzzy....1970.

Edited February 11, 2017 by keiser31 (see edit history)

[Spinneyhill]

If that cap is die-cast, be careful with brass. Remember the galvanic series.

[28 Chrysler]

I had to add an 1/8" red rubber ring to get  the cap to line line up properly to the front.

 

[lozrocks]

The idea behind many thin layers is to ensure the wings line up when the cap is tightened. It is common to see 6 layers.

In the cars I have seen there is generally one thick seal and numerous thin layers underneath.