Bio-plasmatic Gel
developed by the scientists of the Qektoth Confederacy, this substance was a highly corrosive acid blended with a sticky gel. When launched in torpedo casings against a starship, the casing exploded and sprayed the gel all over the target's hull. The gel stuck to the hull, which the acidic corrosive began to eat through the metal plating. Unless removed, the gel eventually ate through the hull and breached the ship. The gel lost strength over a short period of time, and could be burned off the hull during passage through an atmosphere.