Optically Clear When Cured Water Clear Formulation for Sealing Glass-to-Glass, Glass-to-Tile and Glass-to-"U" Channel Applications Include Shower Enclosures and Specialty Glass Assemblies CRL Water Clear Silicone Sealant is an optically clear one-part silicone sealant that cures in the presence of atmospheric moisture (acetic cure) to produce a durable and flexible silicone rubber. Its unique weather ability enables it to retain original design properties, even after years of exposure. Compare Our Water Clear Silicone Color: Water Clear Contents of Cartridge : 5 Fl. Oz.(148 ml) Minimum Order: 1 Each CRL Water Clear Silicone Sealant is intended for building construction applications and is particularly effective for glazing butt and lap shear joints and sealing curtainwall projections and other glass, plastic and metal assemblies. Its exceptional clarity makes it the ideal sealant to use in frameless shower enclosures. It is also appropriate for general construction and industrial applications. Water Clear Silicone cures quickly with a tack-free time of 10 minutes. It adheres to clean metal, glass, most types of wood, silicone resin, ceramic, natural and synthetic fiber, and most painted surfaces. SPECIFICATIONS: Meets or exceeds the test requirements of Federal Specification TT-S-001543A (COM-NBS) Class A for Silicone Building Sealants; TT-S-230C (COM-NBS) Class A, Non-Sag for One Component Sealants; ASTM C-920 Standard Specifications for Elastomeric Joint Sealants as Type S, Grade NS, Class 25, Use NT, G and A; CAN/CGSB-19.13-M97.