SIKA Sealant 591 Marine Sealant

There is nothing like Sikaflex

by Bernd M.

great quality..everything fits.. .. easy to process according to the specifications ..

by Jürgen J.

Good buy Delivered quickly and well packaged!

by Lionel L.

Planned for installation of hatches We won't try it out until spring

by Wilhelm K.

Product data

SVB item number 24438
EAN 7612895406879
Manufacturer no. 591
Description Sikaflex - Sealant 591
No. of components 1 component
Package Cartridge
Intended use Sealing
Examples of use Dynamic connections, Static connections
For substrate Steel, Plastic
Seawater resistant Yes
UV-resistant Yes
Overpaintable Yes
Contents 300 ml
Colour White
Compatible pre-treatment Aktivator 100, Aktivator 205, MultiPrimer Marine, Primer 290 DC
Packing Unit 1 pcs

SVB item number 24439
EAN 7612895407012
Manufacturer no.
Description Sikaflex - Sealant 591
No. of components 1 component
Package Cartridge
Intended use Sealing
Examples of use Dynamic connections, Static connections
For substrate Steel, Plastic
Seawater resistant Yes
UV-resistant Yes
Overpaintable Yes
Contents 300 ml
Colour Black
Compatible pre-treatment Aktivator 100, Aktivator 205, MultiPrimer Marine, Primer 290 DC
Packing Unit 1 pcs

SVB item number 24440
EAN 7612895410302
Manufacturer no. 24440
Description Sikaflex - Sealant 591
No. of components 1 component
Package Cartridge
Intended use Sealing
Examples of use Dynamic connections, Static connections
For substrate Steel, Plastic
Seawater resistant Yes
UV-resistant Yes
Overpaintable Yes
Contents 300 ml
Colour Grey
Compatible pre-treatment Aktivator 100, Aktivator 205, MultiPrimer Marine, Primer 290 DC
Packing Unit 1 pcs

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only €49.95

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Image of Masking Tape TOP TAPE / beige / 18 mm / 24 mm x 50 m

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from €3.10 (€0.06/ m)

2 Versions

Product details

1-component sealant based on Sika's silane-terminated polymer (STP) technology. Sikaflex 591 was specially developed for the harsh marine conditions outdoors and is therefore extremely weather-resistant. Also suitable for indoor applications.
With sealant 591, Sika sets new environmental standards concerning the user's safety and health: the sealant is free of tin, phthalates, isocyanate, solvents and PVC, and thus exhibits the lowest emissions of all available sealants for maritime applications. In addition, Sikaflex 591 has a long color stability and can easily be painted over with the common marine paint systems.

NOTE!
Before application, preliminary tests should be carried out with original materials under the respective conditions.

Application areas

Outdoor and indoor sealing applications
Broad adhesion spectrum
Creation of elastic and vibration-damping sealing joints

Advantages

Robust and mould-resistant
Can be painted over with standard marine paint systems (1K and 2K)
Compatible with non-ferrous metals
Very elastic
Weatherproof
Low-emission - best result of all marine sealants
Highest ecological standard
IMO-certified

Documents

Certificate

PDF (251,42 KB)

Datasheet

PDF (2,66 MB)

Product safety

Please note the following hazard warnings:

Hazard warnings

Caution! Hazardous respirable droplets may be produced when spraying. Do not inhale aerosol or mist.
Contains (name of sensitising substance). May produce an allergic reaction.

EUH211, EUH208

What other SVB customers have to say

100% real reviews

28 customer reviews

4.6 (out of 28 ratings)

5 Stars

(18)

4 Stars

(8)

3 Stars

(2)

2 Stars

(0)

1 Stars

(0)

100% recommend SVB

Advantages
Package (3)
Colour (3)
Yield (theoretical) (3)
Price/performance ratio (3)
Processing (4)
Effect (3)
Shelf life (3)
Use after treatment (3)
Drying time (4)

by Klaus M.

4/22/2026 Verified purchase Variant: 24438

Well, it works, so why write a long novel about it!

Advantages
Package
Colour
Yield (theoretical)
Price/performance ratio
Processing
Effect
Shelf life
Use after treatment
Drying time

by Jean Paul C.

2/1/2026 Verified purchase Variant: 24438

ALRIGHT

by Rolf J.

8/6/2025 Verified purchase Variant: 24439 in use on a Bayliner Marine Corp. - Bayliner 2455 Ciera Sunbridge

Great product.

Great to work with, for bonding parts.

by Martin N.

7/31/2025 Verified purchase Variant: 24438 in use on a X-Yachts A/S - X-79

One of the best long-lasting silicones

Used this for installing log and Trudesign hull penetration, glass in forward hatch.....and then everything else.
Super easy to work with, and high adhesion

by Christian K.

5/26/2025 Verified purchase Variant: 24438 in use on a Pic'sel - Passoa 501