Versatile Sealant: Bostik 100% Neutral-Cure Pure Silicone for various substrates. Color Variety: Choose from 35 colors plus clear for diverse design needs. Flexible Application: Ideal for horizontal to vertical surfaces, expansion joints, and fixtures. Superior Performance: Ensures elongation, flexibility, and waterproofing in change of plane joints. Fast Curing: Tack-free in 20-30 minutes, suitable for interior, exterior, wet, and dry installations. Bostik Pure Silicone Sealant is a specially formulated, neutral cure, 100% silicone sealant for a variety of substrates such as ceramic tile, slate, wood, metal, glass, fiberglass, laminate and plastic. Bostik Pure Silicone has superior elongation and flexibility for use in change of plane joint applications. Bostik Pure Silicone is designed for use in interior, exterior, intermittent wet and dry installations.