Dap 00688 All-Purpose Adhesive Sealant, 100% Silicone, 2.8-Ounce Tube

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Feature

Long lasting 100% silicone rubber helps build and repair aquariums
Waterproof
Stays flexible
Won't crack or shrink
Non-toxic to fresh and saltwater fish when cured

Description

Use to build or repair aquariums. Provides a waterproof and watertight seal. Harmless to fresh and saltwater fish when cured. Will not crack or shrink. Meets ASTM Specification C290, Class 25, Type S, Grade NS.