self-sealing
1. [ adjective ] capable of sealing itself as after being pierced
Examples:

"self-sealing tires"

Related terms: punctureless
2. [ adjective ] seals without the application of moisture
Examples:

"self-sealing envelopes"

Related terms: adhesive
Similar spelling:   self-serving
  self-seeking
  self-acting
  self-sustaining
  self-sufficing
  self-examining
  self-asserting
  self-service
  self-giving
  self-sown
  self-sustained
  self-supporting
  self-styled
  self-seeker
  self-seeded