American Sealants

American Sealants ASI 509 Aquarium Sealant – 10.2 oz Caulk Cartridge


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ASI Aquarium Silicone Sealant is a one-part, RTV Silicone. It cures into a durable, long-term rubber that is aquatic life safe.

Due to it’s exceptional tensile, elongation and tear strength it has been used for decades by leading aquarium manufacturers in production use as well as repair. ASI Aquarium Sealant has excellent clarity and offers excellent primerless adhesion to glass. ASI Aquarium Sealant can be used in both saltwater and freshwater tanks to create a waterproof seal. Because it is a thick sealant, it can be applied to Vertical and overhead applications without sagging or slumping.


  • Aquatic Life Safe
  • Made For Aquarium Manufacturing & Repair
  • Excellent Adhesion & Clarity
  • Creates A Durable, Waterproof Seal
  • Excellent Tensile Strength & Versatility
  • One-Part, Easy To Use & Tool
  • Extremely Resistant To Degrading, Non-Yellowing
  • Use In Salt Or Fresh Water Aquarium

Common Applications:

  • Aquarium Manufacturing
  • Terrarium Manufacturing
  • Glass Viewing Panels
  • Sealing/Bonding Aquarium Filters
  • Aquarium Repair
  • Terrarium Repair
Common Substrates:
  • Glass
  • Most Acrylics
  • Aluminum
  • Metals
  • Most Woods
  • Some Plastics
  • Porcelain
  • PVC
  • Steel

Conforms / Meets / Exceeds:

  • FDA Regulation No. 21 CFR 177.2600 VOC Compliant (23 grams/liter AST D2369)

Additional information

Weight 1 lbs
Dimensions 9 × 2 × 2 in


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