Resurrecting an old thread to see if a glue rehab of some torn/mis-shapen old K Line 18" heavyweight diaphragms is possible/recommended. The diaphragms in question have tears and some minor missing pieces, but appear to be comesticaly salvageable and will be placed on secondary (i.e., not used too often) passenger cars.
Is there a glue or another process recommended for the soft K Line material used in producing the diaphragms?