Quote Originally Posted by Benelli B76 View Post
If it is the modern polyurethane it should not deteriorate as it will contain a special additive in the mix which did not exist in the old type.
In all the many Meteors I have fixed I just fit a large rubber tap seal which is the correct diameter and just needs the hole opening to 10 mm.

Baz
That's what I did to my challenger on my 635 magnum I shortened the rod end & drilled another hole for the retaining pin doing way with it altogether.