Aquascape American Sealants Aquarium Silicone 10.2 oz
Formulated for fresh or saltwater aquariums, this silicone sealant adheres to glass without primers. When fully cured, this waterproof 100% silicone sealant is non-toxic to fish after curing, is resistant to weathering, airborne chemicals and UV radiation. ASI Aquarium Silicone Sealant is a non-slump sealant and can be easily applied to a vertical surface and will not flow or sag. Will not crack or shrink.
Application
- Glass must be properly prepared as described.
- Apply the aquarium sealant to the edge surface of the glass to be joined to the non-edge surface. After application, the assembled glass components should be tightly placed in a fixture or jig to allow the sealant to flow evenly between the surfaces.
| Specification | Detail |
|---|---|
| Volume | 10.2 oz |
| Adhesion | Glass |
| Curing Type | Waterproof, non-toxic after curing |
| Resistance | Weathering, airborne chemicals, UV radiation |
| Flow Property | Non-slump, does not sag or crack |
FAQ
Can this silicone sealant be used in both freshwater and saltwater aquariums?
Yes, this silicone sealant is formulated for use in both fresh and saltwater aquariums.
Does the sealant require a primer to adhere to glass?
No, the sealant adheres directly to glass without the need for a primer.
Will the sealant remain flexible and intact after curing?
Yes, after full curing, the sealant is resistant to cracking or shrinking and maintains its integrity over time.

Abigail Dickens –
Used this sealant to join a new aquarium glass panel. It applied smoothly and stayed in place without sagging. After curing, the aquarium looked clean and secure. No issues with fish or water chemistry. Highly recommend for aquarium repairs.
Carl White –
Worked well for sealing a glass lid on my saltwater tank. It didn’t flow down the sides and held firmly. Cured within a week as expected. Fish showed no signs of distress after use.
Kylie Taylor –
Great product for DIY aquarium projects. Easy to apply and stays put even on vertical surfaces. No cracking or shrinking after several months of use. Non-toxic and safe for fish.