Bond It HA6 High Modulus Marine Silicone Sealant - 12x Black, 310ml | Aquarium-Safe - UV & Saltwater Resistant - Waterproof - Flexible | Ideal Sealant for Glass - Gaskets - & High Movement Joints

Marine Grade Silicone: Engineered to withstand harsh marine conditions, including UV, ozone, and saltwater immersion. Aquarium-Safe: Free of fungicides or oils, making it safe for aquatic life and ideal for aquarium construction. High Movement Capability: Accommodates up to 25% joint movement with excellent flexibility and adhesion. Temperature Resilient: Performs reliably in extreme temperatures from -60°C to +180°C, with short-term tolerance over +200°C. Non-Shrinking & Non-Slumping: Maintains shape and integrity in vertical and horizontal applications. Versatile Applications: Bonds and seals glass, ceramics, anodized aluminum, primed metals, timber, and many plastics. Long Shelf Life: Silicone sealant comes in a reliable and premium cartridge with 24 months of shelf-life when stored in original, unopened cartridges