Keep Water, Cold Air & Dust Out The Simple & Smart Way With Our Silicone Seal Strip! ? Our door soundproofing seal strips are made using flexible silicone rubber along with a strong adhesive to provide you with a simple, convenient and effortless way to lock in warm air and block out the elements, dirt, and dust to make life easier for you. ? The silicone strip seals can easily be applied to most glass shower doors, steel or aluminum windows, cupboards, sliding doors, wardrobes, closets, under doors, furniture and much more to help keep cold air, insects, water and noise out without any hassle. Strong & Flexible For A Firm & Functional Seal.