Anyone heard of this as a replacement for BMW Gummi-pflege? It is designed to restore/maintain door gaskets. It is a clear/whitish paste like substance in a white 5 oz. bottle with a red brush top. about $5.00. Corvette and Z3/Z4 people seem to like it a lot

Wipe it on, let it soak, then wipe excess. Looking for an on-line source. my local GM dealer says not a GM part. Go figure?
Part # is 1#10953014