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J-B MarineWeld Epoxy Adhesive

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5020 PSI

Set Time

4 - 6 Hours

J-B MarineWeld is a specially formulated two-part epoxy cold weld system that provides for strong, lasting repairs for bonding different or similar surfaces, such as aluminum, metal, composites, fiberglass and others.

MarineWeld sets in 4-6 hours at room temperature and is fully cured to a dark grey color in 15-24 hours. Once cured, it can be shaped, tapped, filed, sanded and drilled and will retain its strength above or below the waters’ surface. MarineWeld has a 1:1 mixing ratio and tensile strength of 5020 PSI.


Great For:

  • Boats

  • Personal Watercraft

  • In/Outboard Engines

  • Deck & Hull Accessories

  • Under Water/Wet Conditions

Functional Cure

15 - 24 Hours

Cure Colour

Dark Grey

Made in the USA US flag



Clean repair area of dirt, grease, oil, paint, rust etc. For best results use a detergent or degreaser to first clean the surface, then roughen surface with file or coarse snadpaper to provide best repair.


After removing the replaceable cap, press down on plunger and squeeze equal amounts onto a disposable surface and mix thoroughly.


Press with appropriate tool in an even coat, weld bead or extruded shape as needed.


Sets in 4 - 6 hours. Cures in 15 - 24 hours. Allow 4 - 6 hours before handling and 15 hours (minimum) before putting object back in use.

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