The Bostik S21 Multipurpose Low Modulus Acetoxy Silicone Sealant in Black is a high-performance, versatile sealant designed for a broad range of sealing and bonding applications. Crafted from premium acetoxy silicone, this 310ml sealant offers excellent adhesion to most non-porous surfaces, making it an ideal choice for construction and DIY projects. It boasts a low modulus formulation, ensuring flexibility and durability even in varying weather conditions. The sealant also features a black colour that blends seamlessly with any setting, enhancing the aesthetics of the finished project.

Brand Name	Bostik
Colour	Black
Material	acetoxy silicone
Type	Multipurpose Sealant
Waterproof	Yes, once dried
Application Surface	Wood, Plaster, Masonry, Metal
Size	310 milliliters
Drying Time	Standard Drying Time
Indoor/Outdoor Use	Both interior and exterior
Paintable	Not Paintable
Special Features	Mould-resistant, Crack-resistant
Surface Preparation	No primer required

The Bostik S21 Multipurpose Low Modulus Acetoxy Silicone Sealant in Black is a high-performance, versatile sealant designed for a broad range of sealing and bonding applications. Crafted from premium acetoxy silicone, this 310ml sealant offers excellent adhesion to most non-porous surfaces, making it an ideal choice for construction and DIY projects. It boasts a low modulus formulation, ensuring flexibility and durability even in varying weather conditions. The sealant also features a black colour that blends seamlessly with any setting, enhancing the aesthetics of the finished project.

Brand Name	Bostik
Colour	Black
Material	acetoxy silicone
Type	Multipurpose Sealant
Waterproof	Yes, once dried
Application Surface	Wood, Plaster, Masonry, Metal
Size	310 milliliters
Drying Time	Standard Drying Time
Indoor/Outdoor Use	Both interior and exterior
Paintable	Not Paintable
Special Features	Mould-resistant, Crack-resistant
Surface Preparation	No primer required