Adhesives - Aquasign

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AQUASIGN supply a range of high-performance and innovative structural adhesives specially formulated for offshore applications and extensively tested allowing us to guarantee their performance for the lifespan of almost all projects – topside and subsea!

Our adhesives have been approved for use on a wide range of substrates – please click here to view our Adhesive Substrate Guide, or contact us to discuss your application in more detail.

Biohesive® 225

Biohesive® 225 is a high performance Silicone RTV adhesive sealant. It is an atmospheric moisture curing adhesive, therefore whilst we recommend 24 hours for full cure immediate immersion subsea is possible.

Biohesive® 225 is a single component adhesive therefore requires no mixing or measuring of curatives. The application of our silicone glue is therefore very straightforward, supplied in 310ml cartridges suitable for both standard manual or air-fed guns, depending on the size of your project.

Providing the material is stored in the correct conditions as outlined in the datasheet, the shelf-life of Biohesive® 225 is 24 months; considerably longer than conventional polyurethane or epoxy adhesives. In addition, Biohesive® 225 can be re-used following application, as the cartridge is resealable.

One of the main advantages offered by Biohesive® 225 is that it can be used in geographical locations with high temperatures (>30°C / 85°F) and / or high humidity (75% +) without causing significant performance issues.

The flexible subsea glue has undergone various tests, showing good adhesive strength to a variety of substrates and exceptional resistance to seawater in ageing trials. This underwater adhesive has also shown exceptional heat resistance with an upper limit of temperature in application of 200°C (390°F) and retains its flexibility at temperatures of -65°C (-85°F).

Biohesive® 225 is completely non-toxic, therefore no dangerous goods documentation is required for shipment. It cures to a harmless solid making disposal of part-used or an empty cartridge extremely straightforward. For use, standard PPE is recommended; goggles and gloves.

AquahesiveTM 5836

Aquahesive™ 5836 is a high-performance polyurethane adhesive, with a pot life of 30-45 minutes, fully curing within 24 hours depending on the ambient conditions.

It is a two-part adhesive system, suitable for use on a wide range of materials. Once mixed the adhesive cures into a solid material, therefore ideal for structural bonding applications where a flexible adhesive might not be suitable.

One of the main benefits of using a polyurethane adhesive is its ability to set in high moisture conditions and suitable over a wide temperature range (-40°C to 150°C).

However, this type of adhesive is sensitive to humidity, therefore it is essential care is taken to ensure the conditions it is mixed and applied fall within the range of a minimum temperature of 10°C and maximum humidity of no more than 65-70%.

Aquahesive™ 5836 has a shelf-life of 12 months and should be stored in the conditions outlined in the data sheet. During use, personnel should wear PPE; gloves, skin protection and safety goggles.

AquahesiveTM 5836 can also be used as a retrofit adhesive. The underwater glue can be mixed topside and applied by a diver in shallow waters for retrofit subsea bonding applications or to create a water-tight seal.

Downloadable documents on these high-performance structural adhesives, including test reports, SDS and product datasheets, are available from our Client Portal – simply register for access.