Lem Sealant
A sealant is a substance (liquid, paste) used to fill gaps, cracks, and joints in materials to block fluids (water, air, gas), dust, sound, or heat, offering protection and improving structural integrity, with common types including silicone (flexible, waterproof), acrylic (paintable, indoor), and polyurethane (strong, weather-resistant), used in construction, interior dekorator