What is Soudal Soudaflex 40 FC suitable for?

You can use this polyurethane sealant for elastic sealing of joints in concrete floors, bonding building materials, and structural joints in vibrating constructions.

Can this sealant be painted over?

Yes, once fully cured, you can paint over it with most water-based paints. Always perform a preliminary compatibility test.

Which surfaces is this sealant not suitable for?

This sealant does not adhere to PE, PP, PTFE (Teflon), glass, or bituminous substrates.

How fast does the sealant cure?

Skin formation takes place after 15 minutes at 20 °C. The curing speed is 3 mm per 24 hours.

What tool do you need to apply this product?

You apply the sealant using a standard manual or pneumatic caulking gun suitable for 310 ml cartridges.

SOUDAL Soudaflex 40FC polyurethane adhesive sealant black 310 ml - 102643

Name: SOUDAL Soudaflex 40FC polyurethane adhesive sealant black 310 ml - 102643
Brand: SOUDAL
SKU: 02334100
Price: 8.92 EUR
Availability: InStock

Supplier number: SOUDAL 102643 | EAN 5411183034143

From 1 piece €8.92

From 12 pieces €8.47 - €5.35 saving

From 24 pieces €8.25 - €16.06 saving

From 36 pieces €8.03 - €32.11 saving

8.92 tax incl.

€7.37 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 05/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

Resilient bonding and sealing

Practical benefits

Permanently flexible jointing: With Soudaflex 40 FC, you absorb structural movements and vibrations without risking joint failure or tearing.
Strong multi-surface adhesion: You achieve durable bonds across demanding substrates like concrete and metal for construction tasks.
High chemical resistance: The cured polyurethane barrier reliably protects your seams against moisture, UV radiation, and harsh substances.

In a nutshell

The right choise for

With the black Soudal Soudaflex 40 fc polyurethane adhesive sealant, you achieve strong, resilient joints and bonds across demanding construction tasks. Its permanently flexible polyurethane formula reliably absorbs structural movement and mechanical vibrations, preventing cracks in concrete floor joints and vibrating structures. It delivers dependable adhesion on substrates such as concrete and metal, both indoors and outdoors. The cured sealant creates a durable barrier against moisture, uv radiation, and harsh chemicals. Packaged in a 310 ml cartridge, it applies easily with a standard caulking gun, curing at 3 mm per 24 hours.

Product information FAQ

€8.92

In stock - tax incl.

Key features according to our expert

Net volume: 310 ml
ADR packing group: Not applicable
ADR class: Not applicable
Principal hazard property: GHS08 Health hazard
UN number: Not applicable
P-statements: P101; P102; P261; P284; P304 + P340; P342 + P311; P501
H-statements: H334
Hazard class: GHS08 Health hazard
Physical state: Solid
Flash point: 62 °C
Packaging: Cartridge
Color: Black

Product description:

Soudaflex 40 FC is a high quality, one component polyurethane sealant with high modulus for a wide range of sealing and bonding applications.

Characteristics:

Very easy application
Stays elastic after curing
Very good adhesion on many materials
Excellent resistance to many chemicals
Especially developed for concrete applications

Applications:

All sealing and bonding applications in the building industry
Structural bondings in vibrating constructions

Directions for use:

Method: caulking gun
Application temperature: +5°C to +35°C
Clean: with white spirit immediately after use
Finishing: with a soapy solution before skinning
Repair: with same product

Remarks:

In order to ensure the correct performance of our product, Soudal recommends a small adhesion test.
When painted with oxidative drying paints disturbances in the drying of the paints may occur
AENOR Certificate N°047/000278

Precautionary statements

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
P284: (In case of inadequate ventilation) wear respiratory protection.
P304 + P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P342 + P311: If experiencing respiratory symptoms: Call a POISON CENTER/doctor/…
P501: Dispose of contents/container to ... (see safety data sheet).

Hazard statements

H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.

All Features

Net volume: 310 ml
Adr packing group: Not applicable
Adr class: Not applicable
Principal hazard property: GHS08 Health hazard
Un number: Not applicable
P-statements: P101; P102; P261; P284; P304 + P340; P342 + P311; P501
H-statements: H334
Hazard class: GHS08 Health hazard
Physical state: Solid
Flash point: 62 °C
Packaging: Cartridge
Color: Black
Colour: black
Packaging form: Tube
Product content: 310 ml

Brand SOUDAL
02334100
EAN 5411183034143
Supplier number SOUDAL 102643

Frequently asked questions about this product

Answered by specialists

What is Soudal Soudaflex 40 FC suitable for?: You can use this polyurethane sealant for elastic sealing of joints in concrete floors, bonding building materials, and structural joints in vibrating constructions.
Can this sealant be painted over?: Yes, once fully cured, you can paint over it with most water-based paints. Always perform a preliminary compatibility test.
Which surfaces is this sealant not suitable for?: This sealant does not adhere to PE, PP, PTFE (Teflon), glass, or bituminous substrates.
How fast does the sealant cure?: Skin formation takes place after 15 minutes at 20 °C. The curing speed is 3 mm per 24 hours.
What tool do you need to apply this product?: You apply the sealant using a standard manual or pneumatic caulking gun suitable for 310 ml cartridges.