Definition from Wiktionary, the free dictionary
- A device with seals that activate without special procedures.
- The engine had self-sealing gaskets to keep the grease in, just tighten the bolts.
- Describing a container that is capable of automatically closing off leaks that form in it.
- One thing that saved many pilot's lives during World War II was salf-sealing gas tanks that kept their planes from becoming fireballs when riddled with bullets.