Elastic fire-retardant sealant B1
Elastic fire-retardant sealant B1 - 1
Elastic fire-retardant sealant B1 - 2
Elastic fire-retardant sealant B1 - 3
Elastic fire-retardant sealant B1 - 4
Elastic fire-retardant sealant B1 - 5
Elastic fire-retardant sealant B1 - 6
Elastic fire-retardant sealant B1 - 7

For detailed information, other images and documents, please select individual articles from the following table.

Elastic fire-retardant sealant B1

  • Flame retardant according to DIN4102, part 2, B1

  • Contents: 310 ml
  • Building material class: B1 - Of low flammability
  • Building material class conditions: in accordance with DIN 4102-1
  • Ultraviolet resistance: Yes
  • Shelf life from production: 18 Month
  • Conditions to maintain shelf life from production: at max. 25°C
  • Container: Cartridge
  • Stretch capacity: 20 %
  • Breaking elongation: 210 %
  • Shore A hardness: 20
  • Short-term resistance against: Diluted lye, Acid, Petrol, Acetic acid (10%), Light benzine, Hydrochloric acid (10%), Sulphuric acid (5%), Toluene, Trichloroethane, Trichlorethylene
  • Chemical basis: Neutral crosslinked silicones, oxime-based
  • Resistance against: Ozone, Weather, Salt water, Oil, Fats, Household cleaning products
  • Full curing speed: 2 mm/d
  • Density: 1.4 g/cm³
  • Min. temperature resistance of the hardened material: -50 °C
  • Max. temperature resistance of the hardened material: 150 °C
  • Min. skin-formation time: 10 min
  • Weight of content: 434 g
  • Smell/fragrance: Characteristic

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You can refine your search by selecting different attributes

Art.-no. Colour Fire resistance rating Contents Building material class Quantity PU
White B1 310 ml B1 - Of low flammability
Grey 310 ml B1 - Of low flammability

Packaging unit

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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 and image 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

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Technical information

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  • Resistant to ageing, low odour, UV-resistant, permanently elastic

  • Simple to apply

Sealant must be smoothed with a neutral smoothing agent such as our sealant smoothing agent, art. no. 0893 3.

Joint finishing should be based on DIN 18540 and DIN 18545. The sealant must only be subject to two-side adhesion. Any other adhesion to an undersurface can result in stress cracks in the event of movement. In such cases, 100% sealing is no longer guaranteed. To prevent three-side adhesion, the joint should be packed with back-fill material. The minimum fill depth of 15 mm must be provided on both sides of the partition. The wall thickness must be greater than 100 mm.

For general B1 requirements P-MPA-E-00-583