Randy,
There are only 3 diaphragms used for the different pressure tanks.
Metal plunger, 4 gallon tank uses the rubberish gasket with the extra hole, that is the only gasket inside your tank.
I buy the gaskets without the hole for a $1 less and put the hole in myself
The cork gasket shown above for $5 is that gasket for your 4 and 6 gallon tank.
I see that pic of your tank, but do not see a pic of the gasket you reference.
Can you snap a pic of the part you reference 02572?
Assembly can be a pain as the spring is somewhat stiff.. There is a small aluminum disc that you must not lose…lol
Show us the part your talking about.
Richard
http://www.richardsoutboardtools.com
classicomctools@gmail.com
