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self- +‎ sealing


self-sealing (not comparable)

  1. A device with seals that activate without special procedures.
    The engine had self-sealing gaskets to keep the grease in, just tighten the bolts.
  2. Describing a container that is capable of automatically closing off leaks that form in it.
    Many pilots' lives were saved during World War II by salf-sealing gas tanks that kept their planes from becoming fireballs when riddled with bullets.