American Sealants ASI 509 Aquarium Sealant – 10.2 oz Caulk Cartridge

Description

Aquarium Sealant is a reliable choice when you need a clear, flexible seal for freshwater or saltwater tanks. ASI 509 is a one-part RTV silicone that cures into a durable rubber, so seams stay watertight over time.

Aquarium Sealant Benefits

• Aquatic-life-safe cure for builds and repairs
• High clarity for clean, professional seams
• Primerless adhesion to properly cleaned glass
• Thick body that helps prevent sagging on vertical beads
• Resists yellowing and long-term degradation

Aquarium Sealant Applications

• Glass aquarium manufacturing and assembly
• Terrarium manufacturing and panel sealing
• Re-sealing viewing panels, corners, and fillets
• Sealing filter housings and accessories
• Aquarium and terrarium repair work

Before you start, confirm the joint design, then plan the bead size. Also, keep silicone off dusty surfaces, and avoid touching cleaned glass with bare hands. If you are resealing, remove all old silicone first. Then stage clamps and spacers, so assembly goes smoothly.

Silicone Performance For Glass Seams

Because this silicone has strong tensile, elongation, and tear properties, it handles vibration and handling well. In addition, it tools smoothly, so you can form neat fillets with less cleanup. As a result, you get a uniform bead that seals consistently. Plus, the thick bead stays where you place it.

Surface Prep And Cure Tips

First, clean and dry the glass until it is free of oils, dust, and residue. Then apply a continuous bead, assemble with steady pressure, and tool the joint right away. After that, protect the seam from movement while it cures.

However, plastics vary widely, so test on acrylics and other plastics before committing. If you need more build, apply in controlled passes. Finally, wait for full cure before water exposure, especially on thicker joints.

Specs, Compliance, And Buying Help

This Aquarium Sealant comes in a 10.2 oz caulk cartridge for standard caulk guns. It is VOC compliant and meets FDA Regulation 21 CFR 177.2600.

For manufacturer details and product guidance, visit American Sealants.

For related tank and general sealing options, browse our silicone adhesives selection.

Need help confirming fit for your tank build or repair? Share your materials and joint details, and we will help you choose with confidence.