It's impossible to have manufacturing defects with the shower door seals since every single one has been crafted to provide proper alignment and sealing capabilities. Apart from aesthetic purposes, these seals help prevent water leakage as well as maintain a clean bathroom. Our seals are made from mold resistant and mildew resistant materials which means they are less prone to damage from humid temperatures. Whether you are installing a new or remodeling an old shower, replacing the door seals with our 6mm shower door seals will keep your shower pristine and bolster the value of your investment due to its long lasting shower protection.