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. Ideal for sealing joints and gaps, especially in areas requiring fire resistance. This sealant resists the passage of fire for up to 4 hours, depending on the application. It also provides excellent adhesion to a wide variety of substrates and is suitable for external use.