Light Aircraft Association

I'm helping a friend with an Early Auster with the Cirrus engine. We need the large rubber bungs on the side of the engine as they aren't very rubbery any more. Can someone post me in the direction of new ones please as I suspect NOS will be as bad.

Unbelievably we found 4 new ones in a drawer so all sorted. Wondering if one of the horses in the field is Shergar as well