Concrete sealer is a protective coating applied to concrete surfaces to enhance durability and longevity. It helps prevent water, oil, and other substances from penetrating the concrete, which can lead to damage over time. Sealers come in various types, including acrylic, epoxy, and silicone, each offering different levels of protection and finish. Applying a concrete sealer can also improve the appearance of surfaces, making them look more vibrant and polished. Regular maintenance with sealers can extend the life of driveways, patios, and floors, ensuring they remain functional and visually appealing for years to come.