Bostik Fireseal Silicone Sealant in White is a fire-resistant sealant suitable for various applications. It has an advanced formulation that provides a durable, flexible seal that withstands high temperatures and offers excellent adhesion to a range of surfaces, including external use. Ideal for sealing joints and gaps, especially in areas requiring fire resistance. It resists the passage of fire for up to 4 hours, depending on the application. The sealant also has excellent adhesion to a wide variety of substrates, making it a versatile choice for different projects.