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1-component gun foam

1C gun foam B3

Art.-no. 08921521

Prices for customers after login

1-component gun foam

Art.-no. 08921521

Prices for customers after login



Exclusively for trade customers

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Installation and filling foam for gun application

Excellent adhesion to most building substrates (except PE, PP, PTFE and silicone)

Increased sound and thermal insulation with mineral wool, cork and glass fibre


No loss of volume and only limited expansion when hardened.

Quick to harden

Fine cell and even foam structure

Resistant to ageing

Resistant against a wide variety of solvents, paints and chemicals


Primer should be applied to porous and absorbent surfaces. PURLOGIC® TOP can be applied with the foam guns PURLOGIC® Xpress, art. no. 08911524 and PURLOGIC® COMBIpress, art. no. 08911526. Other guns are not compatible.

The above application instructions are recommendations given on the basis of our own tests and experience. We recommend that you carry out your own tests before use. Due to the great variety of different applications and storage and processing conditions, we cannot guarantee a particular application result. We will not accept legal liability for any advice or technical information provided by our free customer hotline unless this advisory service and/or technical information is part of the contractually agreed performance owed by us, or the customer service employee acted willfully or intentionally. We guarantee the consistent quality of our products and reserve the right to make technical changes and improvements.

Product information

Würth Catalogue(X)

Catalogue page as PDF 1


Application area

Secure insulating and filling of window joints, pipe openings, joints, wall joints, wall openings and cavities, such as wall openings, roof finishings, pipe ducts, roller shutter boxes etc. Adheres to concrete, stone, hard PVC, metal and wood. Does not adhere to polyethylene, silicone, PTFE and grease.


Shake can vigorously 20 times before use. The surfaces must be clean, solid and free from dust and grease. Pre-treat highly absorbent surfaces. Adhesion surfaces must be moistened with water before the foam is applied. Moisten again if several foam beads are applied. Screw the can all the way into the gun support – do not screw too far or tilt. Foam continues to expand after application. Immediately remove splashes of foam with PURlogic Clean, art. no. 0892160. Thoroughly clean the gun and valve after use. Always leave the open can screwed onto the gun.

Chemical basis

Moisture curing polyurethane prepolymer





Moulded density

25 kg/m³

Conditions for moulded density

in accordance with DIN EN ISO 845 (average)

Tack-free after

10 min

Conditions for being tack-free

at 20°C and 65% humidity with 30-mm adhesive line

Can be cut after

40 min

Conditions for ability to cut

at 20°C and 65% relative humidity at 30-mm adhesive line

Final spreading possible after

2 h

Conditions for final spreading

at 20°C and 65% relative humidity at 30-mm adhesive line

Full resilience

12 h

Conditions for full resilience

at 20°C and 50% relative humidity

Min. processing temperature

5 °C

Max. processing temperature

30 °C

Min. surface processing temperature

5 °C

Max. surface processing temperature

35 °C

Min. temperature resistance

-40 °C

Max. temperature resistance

90 °C

Building material class

B3 - Of high flammability

Building material class conditions

in accordance with DIN 4102

Heat conductance λ

0.032 W/(m*K)

Heat conductance λ conditions

in accordance with DIN 52612

Compression strength

0.3 N/mm²

Compression strength conditions

in accordance with DIN 53421

Conditions for acoustic insulation of joints

in accordance with DIN 52210

Acoustic insulation for 10 mm-wide joint

-1 dB

Acoustic insulation for 20 mm-wide joint

-6 dB

Ultraviolet resistance


Breaking elongation

25 %

Breaking elongation conditions

in accordance with DIN 53571

Flexural strength

0.7 N/mm²

Conditions for flexural strength

in accordance with DIN 53423

Shear strength

0.17 N/mm²

Conditions for shear strength

in accordance with DIN 53427

Yield (volume) approx.

40 l

Conditions for yield

Foam yield (free foaming)


750 ml



Weight of content

735 g

Shelf life from production

12 Month

Conditions to maintain shelf life from production

at 20°C

Additive article:

1-component foam gun PURLOGIC® Xpress


For professional application of 1-component gun foams
x 1 pcs

Packaging unit

The packaging unit defines the number of articles in one packaging. In the catalog segment you can choose from different packaging units if a pop-up menu is displayed.

Just leave the field empty if you don't know the packaging unit when directly entering the article number in the shopping basket or when importing with Easy-/VarioScan. The packaging unit will be determined automatically.

Structure of our article number

The article number is made up of the following: VVVVAAABBB
VVVV = 4 digits for prefix number (please note that the first digit is currently always 0)
AAA = 3 digits for dimension part 1
BBB = 3 digits for dimension part 2

Example article number structures:
Example 1: Screw with dimensions of 4x10 mm:
00574 10 (2 spaces between the 4 and the 10)

Example 2: Screw with dimensions of 10x20 mm:
005710 20 (1 space between the 10 and the 20)

Example 3: Flat washer with an internal diameter of 6 mm:

Information on price display

Price per packaging unit (PU):
The displayed price is always in line with the displayed packaging, if the PU is 250 the price for 250 units, if the PU is 300 the price for 300 units.

Price with price key representation (PSL):
The price always applies to a quantity ruled through the price key:
Price for 1 unit
Price for 100 units
Price for 1000 units


The quantity shows the number of pieces or units of measure contained in the order or delivery for the respective article.
Art.-no. Cust. Mat. No.

Hazardous Material

Product information

Würth Catalogue

Catalogue page as PDF  | 

Flip catalog


Datasheets ()

CAD Data  | 




Technical information