interference-fit cover
nounUK /ˌɪntəˈfɪərəns fɪt ˈkʌvə/
US /ˌɪntərˈfɪrəns fɪt ˈkʌvər/
A cover that stays on tight because it is made just a tiny bit too small to slide on easily.
The mechanic tapped the interference-fit cover onto the bearing with a soft mallet.
OTHER MEANINGS
2. A protective cap held in place by the tight squeeze between two mating parts rather than by threads or fasteners.
The interference-fit cover sealed the shaft end without any screws.
3. A lid or guard installed by pressing it over a slightly larger component so friction keeps it from coming loose.
Workers used a hydraulic press to seat the interference-fit cover on the hub.
4. A closure designed so that the overlap between cover and base creates a secure hold through elastic deformation.
The interference-fit cover popped into place with a satisfying click.