Weather stripping is a flexible seal designed to fit the contours of a car door, ensuring a snug fit when the door is closed. This sealing prevents water from entering the vehicle during rain and protects against dust and ambient noise. Additionally, it helps maintain optimal cabin temperature by reducing air leakage. Over time, exposure to the sun, moisture, and varying temperatures can cause the stripping to deteriorate, requiring the use of adhesive to secure it once more or to bond a new piece.