Aquaseal 21 gram


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The industry standard for maximum strength repairs to wet suits, dry suits and all watersports products. Flexible urethane formula waterproofs, seals and protects against abrasion. Hundreds of watersports and.

household uses.

For fast cure, use with Cotol-240™ Cure Accelerator.

What is it?

When cured (dry) Aquaseal is a thick, clear, elastic urethane rubber.

How it works?

Aquaseal is applied to a hole or tear and allowed to cure over a period of hours (usually 8-12).
When applied, Aquaseal cures by reacting with humidity in the air. It doesn’t ‘dry’ the way other glues do. It changes from a thick liquid to a thick, flexible, elastic rubber.
Once cured, it’s permanent. The repair will generally last the life of the item.

Instructions for Use:

Clean damaged area with Cotol-240™ Cure Accelerator/Precleaner or solvent (paint thinner, nail polish remover or similar).

Trim loose threads. Non-fabric surfaces should be roughened with sandpaper, then cleaned.

Apply Aquaseal® to surfaces directly from tube or with knife or flat stick.

Keep repair level overnight. Avoid contact with other surfaces.
Most repairs reach full strength overnight (10-14 hours). Allow longer for thickest repairs.

For fastest cure (2 hours or less), mix in Cotol-240.


Create backing with removable tape. Fill void and 1/4" beyond edge with Aquaseal. Remove tape after full cure.


Apply 1/16" thick bead overlapping seams edges by at least 1/4". Apply with slight pressure to saturate fabric surfaces.


Apply thin coat with knife for flexible abrasion resistance.

WARNING: FULLY CURED AQUASEAL IS SLIPPERY WHEN WET. For added traction on footwear, sprinkle sand on uncured Aquaseal 1/2 hour after applying.


To remove Aquaseal from hands, buff with cloth soaked in paint thinner, nail polish remover or 99% isopropyl alcohol.

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