gasket

noun

1. 1

   A length of rope used for reefing a sail, or holding a stowed sail in place.

2. 2

   Any mechanical seal that serves to fill the space between two objects, generally to prevent leakage between the two objects while under compression.

3. 3

   A material which may be clamped between faces and acts as a static seal. Gaskets may be cut, formed, or molded to the desired configuration.

4. 4

   Any of a wide variety of seals or packings used between matched machine parts or around pipe joints to prevent the escape of a gas or fluid.