Chest Seal includes a base material layer, and a hydrogel area, an anhydrous gel center area and at least one anhydrous gel are arranged on the base material layer.

In the outer layer area, the anhydrous gel central area is arranged at the center of the base material layer to form an air outlet, the anhydrous gel outer layer area is arranged at the periphery of the anhydrous gel central area, and the anhydrous gel outer layer area is arranged with at least An outer region of anhydrous gel.

The area of the gel outer layer is arranged to form an exhaust channel, one end of each exhaust channel is communicated with the exhaust port, and the other end of each exhaust channel extends to the edge of the substrate layer.

The hydrogel area is covered with a release film.

When inhaling, the sealing strip is close to the body, effectively preventing outside air from entering the chest cavity; when exhaling, the air is discharged from the exhaust port through the exhaust channel.

Size 6 inch, weight 16 ounces