This s is our new gasket for the John Deere 620/630 Rockshaft Housing Cover. It is no longer available from Deere. Our gasket is 1/32” thick using a modern rubber / cellulose blend gasket material. This gasket is fairly large so hand cutting is time consuming and expensive due to the material not used. You can see from the pictures our fit is as close as you can get. Order one for your next project and worry about what is no longer available from Deere for the rest.