- Waterproof seal does not crack or shrink
- Permanently flexible
- Long-lasting bond stops leaks
- Easy to apply
- 100% Non-toxic silicone
- 3 oz tube size
100% silicone aquarium sealant is easy to apply to stop leaks. The high-strength silicone creates a permanent water-tight seal that will not crack or shrink. It’s formulated to be non-toxic, making it perfect for use on all aquariums. Comes in 3 oz tube.