Aqua-Flex Underwater Adhesive Sealant Black 310ml

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  • Adhesive Sealant for use in wet, damp or submerged applications
  • Resistant to weathering and UV
  • Bonds well to a wide variety of materials and surfaces

Weicon Aqua-Flex Underwater Sealant and Adhesive is a special type of adhesive designed specifically for wet or moist surfaces. In fact, it can even be used underwater. Aqua-Flex can be used as either and adhesive or sealant and remains permanently elastic after curing. It also has good UV and weathering resistance which allows it to be used indoors or outdoors.

Weicon Aqua-Flex Underwater Sealant and Adhesive is 100% silicone-free and contains no solvents, halogens or isocyanate. It withstands attack from fresh and salt water (and other media) and bonds well to a range of wet or damp surfaces including metals, many plastics, ceramic, wood, glass, stone, aluminium and stainless steel. Weicon Aqua-Flex has also been certified by ISEGA as an adhesive for use in food technologies.

Applications for Aqua-Flex Underwater Sealant and Adhesive

  • Sealing or bonding plastic foils or PVC sheet (such as pond liners)
  • Sealing and bonding ventilation and air conditioning systems
  • A permanently elastic adhesive for high humidity environments
  • Sealing tubes, pipes and tanks
  • Bonding and sealing wet, damp or submerged surfaces in marine environments
  • Repairs to water tanks, aquariums or containers
  • Roof and gutter sealing and bonding (especially when drying them first is impractical)
  • Sealing and bonding in sanitary applications where completely drying the surface is impractical
  • Gardening and landscaping work



Will this stick to sandstone?

Yes. Weicon Aqua-Flex bonds very well to sandstone and other forms or masonry, concrete, bricks and porous surfaces.

Can I use this outdoors?

Definitely. Weicon Aqua-Flex has excellent resistance to UV and very good ageing stability so it will not go brittle or loose it’s adhesive strength.

Is this a silicone?

No. Weicon Aqua-Flex is an MS polymer based elastic adhesive. It contains no silicone, isocyanate, halogens or solvents and will not attack sensitive surfaces the way some silicones (particularly acetic cure) can.

Will this stick to glass?

Yes. Aqua-Flex bonds well to glass.

Colour: White, Grey, Black

Continuous Temperature Resistance: -40°C to +90°C

Short-Term Temperature Resistance: 130°C (2 Hour Maximum)

Skin-Over Time: 25 Minutes

Cure Speed: 2-3mm in the first 24 hours

Shore Hardness: 42 Shore A

Food Grade: Yes (ISEGA Approved)

Elongation at Break: 650%

Maximum Depth: 5mm

Maximum Width: 25mm

Building Material Category: B 2

IMPA: 81 52 79 (White), 81 52 80 (Black), 81 52 81 (Grey)

SKU SWP000027
Brand Weicon

Weicon Aqua-Flex Underwater Adhesive Sealant Technical Data Sheet

Weicon Aqua-Flex Underwater Adhesive Sealant TDS

Weicon Aqua-Flex Underwater Adhesive Sealant Safety Data Sheet

Weicon Aqua-Flex Underwater Adhesive Sealant SDS


Great/amazing Product.

By: on 2 July 2019
I could not find a adhesive gap filler/ sealer type product that would stick to Polypropylene anywhere. I even called Selleys technical guy and was told that no product they make sticks to polypropylene. I was devastated as Selleys products is the only thing that bunnings sells. I found Swift Supplies after a fair bit of Googling and gave them a call. The sales guy says maybe give the Aqua-Flex a try. So I ordered it. It was delivered within 2-3 days and it is awesome it worked great. I used it to help make a worm farm in a bucket. So I cut a circle out of the bucket lid and replaced it with aluminium flyscreen mesh, using the aqua-flex to stick the fly screen and smoothing out the edges so that the fly screen would not fray. I could not believe this stuff is also Food Grade/Non Toxic , I am sure the worms will also appreciate that lol. It cured really flexible so I can open and close the lid with no releasing of the product anywhere I am so happy, more people need to know about this product.

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