Watch our video for a full explanation of this amazing product. Silicone lids create a suction on any size pan or container. This allows for an airtight seal for food storage, splatter guards, or just a lid for your pots and pans. Never again rummage through your cupboards trying to find the lids that matches up with the correct bottom. As long as you pick a container smaller than the lid you are using, you can create a tight seal!.