Sikaflex 252 White 300 White Sika Polyurethane Construction Adhesive

Discounted product - product expiration date: 01.06.2026

Sikaflex 252 WHITE 300 ml white polyurethane structural adhesive for vehicle construction

The product is specifically designed for bonding large components in the construction of commercial vehicles, trailers, superstructures, campers, and structures exposed to vibrations and dynamic stresses.

This is a solution for applications where a regular sealant is insufficient, because the joint must not only seal, but also transfer loads. Sikaflex 252 creates a flexible connection, fills gaps well, dampens vibrations and remains stable on vertical surfaces thanks to its non-sag consistency.

Applications Sikaflex 252 WHITE 300 ml

Sikaflex 252 WHITE 300 ml is intended for connections subject to dynamic stress.

In practice, the product is suitable for the assembly of panels, vehicle bodies, body parts, camper structures, buses, trailers, and other applications where the joint must perform under load while simultaneously damping vibrations.

What distinguishes Sikaflex 252 WHITE 300 ml

Sikaflex 252 was developed as a flexible adhesive for the construction of commercial vehicles. It has good adhesion to a wide range of substrates, is capable of withstanding high dynamic stresses, fills gaps well, dampens vibrations, and is electrically non-conductive.

This makes it easier to maintain a continuous, controlled adhesive path, especially when assembling larger components.

When to choose Sikaflex 252 WHITE 300 ml

Choose Sikaflex 252 WHITE 300 ml when you need a white polyurethane structural adhesive for components exposed to vibration, material movement, and dynamic loads. It is structurally stronger than typical sealants and is more suited to bonding large components in vehicles and technical structures.

The 300 ml cartridge fits standard cartridge guns. This convenient packaging is suitable for service, assembly, and repair work, where there is no need to use larger 400 ml or 600 ml foil packs.

What to pay attention to before use

Surfaces must be clean, dry, and free of grease, oil, dust, and other contaminants. Additional surface preparation depends on the substrate type and is crucial for the durability of the bond.

For plastics susceptible to stress cracking, special care should be taken and a test on the actual material should be performed. The manufacturer indicates that the product is intended for experienced professional users, and tests on actual substrates and under actual conditions are necessary to confirm adhesion and material compatibility.

Sikaflex 252 can be applied at temperatures between 10 °C and 35 °C. The optimal temperature for the substrate and adhesive is between 15 °C and 25 °C. At low temperatures, the viscosity of the adhesive increases, therefore for easier application it is worth conditioning the product at room temperature before use.

How to use Sikaflex 252 WHITE 300 ml

1. Prepare the substrate: remove dust, grease, oil and loose dirt. The surface must be dry and clean.

2. Place the 300 ml cartridge in a suitable manual, pneumatic or electric gun.

3. Apply Sikaflex 252 at a temperature between 10 °C and 35 °C. The best application conditions are 15 °C to 25 °C.

4. To achieve a uniform joint thickness, the manufacturer recommends applying the adhesive in a triangular bead.

5. Join the elements within the open time. Do not bond the elements after the adhesive has formed a skin.

6. Smoothing should be carried out within the open time. The manufacturer recommends Sika Tooling Agent N. Other smoothing agents must be tested for suitability and compatibility beforehand.

7. Uncured Sikaflex 252 can be removed from tools and equipment with Sika Remover-208 or another suitable solvent.

8. Hands and exposed skin should be washed with suitable hand towels, e.g. Sika Cleaner-350H, or an industrial hand cleaner and water. Solvents should not be used on skin.

Chemical Resistance of Sikaflex 252

Sikaflex 252 is generally resistant to ordinary water, seawater, diluted acids and diluted alkaline solutions. The product is temporarily resistant to fuels, mineral oils, fats, and vegetable and animal oils.

It is not resistant to organic acids, glycolic alcohol, concentrated mineral acids, corrosive alkaline solutions and solvents. In applications exposed to contact with process chemicals, a resistance test should be performed under actual operating conditions.

Technical data Sikaflex 252 WHITE 300 ml

Parameter | Value

Product name | Sikaflex 252 WHITE

Product code in the Melkib file | 1375

Capacity | 300 ml

Packaging type | 300 ml cartridge

Color | White

Chemical base | 1-component polyurethane

Density of the uncured product | 1.2 kg/l, depending on the color

Non-sag stability | Good

Application temperature | 10 °C to 35 °C

Optimum application temperature | 15 °C to 25 °C

Skin formation time | 40 minutes at 23 °C / 50% RH

Open time | 35 minutes at 23 °C / 50% RH

Shore A hardness | 50

Tensile strength | 3 MPa

Elongation at break | 400%

Tear propagation resistance | 7 N/mm

Shear strength | 2.5 MPa

Usage temperature | -40 °C to 90 °C

Short-term temperature resistance | 130 °C for 4 h, 150 °C for 1 h

Storage time according to manufacturer | 12 months when stored below 25 °C

Expiration date of this batch | 01/06/2026

Properties functional | Damps vibrations, fills gaps well, does not conduct electricity

CLP signal word | Danger

Selected H phrases | H317, H334

Additional labeling | EUH204: contains isocyanates. May cause an allergic reaction.

Information on diisocyanates | From August 24, 2023, appropriate training is required before industrial or professional use.

Sikaflex 252 should be stored in its original, undamaged packaging, under conditions consistent with the manufacturer's recommendations. The shelf life according to the data sheet is 12 months when stored below 25 °C.

This product has an expiry date of 01.06.2026, therefore the product is marked as discounted. For technical, serial, or critical applications, the expiration date should be taken into account and a test performed on the target substrate should be performed.

FAQ / Questions and Answers

Is Sikaflex 252 WHITE 300 ml an adhesive or a sealant?

Sikaflex 252 is primarily a flexible polyurethane structural adhesive for joints exposed to dynamic stress. It can also function as a sealant, but its main advantage is its use in bonding large components, particularly in vehicle construction.

What is Sikaflex 252 WHITE used for?

Sikaflex 252 WHITE is used for bonding large components in commercial vehicles, superstructures, trailers, campers, and technical structures. The manufacturer indicates use for wood, metals, aluminum, steel sheets, metal primers, 2K coatings, ceramics, and plastics.

How is Sikaflex 252 different from Sikaflex 221?

Sikaflex 252 is more focused on structural bonding and connections subject to dynamic stress. Sikaflex 221 is a more universal adhesive-sealant for elastic seals and simpler bonding applications.

Does Sikaflex 252 WHITE 300 ml fit in a standard gun?

Yes. The 300 ml version is a cartridge and therefore fits into a suitable standard 300 ml cartridge gun.

Can Sikaflex 252 be used on aluminum?

Yes. The manufacturer states that Sikaflex 252 is suitable for metals, especially aluminum, including anodized aluminum. For responsible applications, a test on the actual substrate should be performed.

Is Sikaflex 252 suitable for plastics?

Yes, plastics are listed in the product's scope of application. For plastics susceptible to stress cracking, consult the manufacturer and perform a test on the original material.

What is the open time of Sikaflex 252?

The open time is approximately 35 minutes at 23 °C and 50% relative humidity. The components must be joined within the open time. Do not bond after a skin has formed.

What is the skinning time of Sikaflex 252?

The skinning time is approximately 40 minutes at 23 °C and 50% relative humidity.

How can I remove uncured Sikaflex 252?

Uncured Sikaflex 252 can be removed from tools and equipment with Sika Remover-208 or another suitable solvent.

Why is this Sikaflex 252 discounted?

The product is discounted due to the indicated expiration date of 01.06.2026. For serial, responsible, or critical applications, the expiration date must be taken into account and a suitability test must be performed on actual substrates.

Is training required before using Sikaflex 252?

Yes, for industrial or professional use, information about the required training for products containing diisocyanates must be taken into account. This information can be found on the product labeling and safety documentation.

Color: nan Size: 300 ml