Acrylic sealant and silicone sealant are two common sealant types. 😃 Acrylic sealant is a type of sealant product that is resistant to moisture, chemicals, and outdoor weather conditions. Silicone sealant is a type of sealant useful for filling, sealing, and bonding purposes. ☀ 👉The key difference between acrylic and silicone sealant is that acrylic sealant is used in specific applications, including PVC, aluminum and wood joinery, bathtubs, sinks, tiles, and ceramics.