press-fitcover
nounUK /ˈprɛs fɪt ˈkʌvə/
US /ˈprɛs fɪt ˈkʌvər/
A cover that you push on tightly so it stays in place.
She pushed the press-fitcover onto the jar until it clicked.
OTHER MEANINGS
2. A protective cap pressed onto a pipe or fitting to close it.
The plumber tapped the press-fitcover onto the pipe end.
3. A removable cover held by pressure rather than threads or screws.
The press-fitcover on the camera lens pops off easily.
4. A cover designed to be installed by pressing, not twisting.
Unlike a screw cap, the press-fitcover needs no turning.