noun

gasket

GAS-kit/ˈɡæskɪt/

A seal placed between surfaces to prevent leakage.

A rubber gasket keeps water from leaking around the pipe joint.

A close-up cutaway of a bolted pipe-flange joint exposes a distinct rubber gasket compressed between the two metal faces, sealing the water passage.

Etymology

Originally, a gasket was a small rope or plaited coil used to secure a furled sail. Its sealing sense developed with machinery packing, originally braided hemp placed at joints to prevent leaks.

In context

FRONTLINE PBS | Official7:09

Underneath this hereis an actual gasket here, and it locks with a key. >> So, it seals? >> It will seal, yeah.

The Undertaking (full documentary) | FRONTLINE

More examples

The mechanic replaces the damaged gasket before reassembling the engine.
Check the lid's gasket if your pressure cooker leaks steam.
These gaskets fit tightly between the two metal surfaces.

Forms

gasket · gaskets

Similar words

seal: Broader term for anything that blocks passage or leakage.
packing: Sealing material compressed into gaps rather than a fitted piece.