Getting locked in some kind of fetish garment, or more general, just not being able to take something off. That could be done with actual locks, or glueing something closed, or just actually getting sealed in something, that when dried / finished processed, has no opening. The tag Chastity is always combined with this of course.
Rubber Walk by M88
Rubber Walk by M88 (Archive Link) Really nice short story by M88, following Sam and her plans for a public rubber session. With a ton of bondage gear, she locked all her keys into a metal box and the key to that had been placed on the other side of the town. Now getting ready with a ton of liquid latex and bondage gear, she begins her trip to get her keys. The hot summer air wasn’t helping, even if the night somewhat kept her hidden. ...