 Self-sealing suction cup

A self-sealing suction cup is a type of suction cup that features a design allowing it to create a vacuum seal automatically when pressed against a smooth surface. This makes them convenient and effective for holding objects without the need for additional tools or mechanisms. The key characteristics of self-sealing suction cups include: 1. **Automatic Seal**: When the cup is pressed against a surface, the air inside is expelled, creating a vacuum that holds the cup in place.