KB fire protection fabric

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KB fire protection fabric

Fire protection sleeve that foams-up in case of a fire, for preventing the fire from spreading via cables, cable bundles and cable conduits. Approved as “weak smoker”.

  • Width: 1.10 m
  • Colour: Grey, White
  • Building material class: B1 - Of low flammability
  • Building material class conditions: in accordance with DIN 4102
  • Material: Glass filament
  • Thickness: 0.7 mm

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Available in 2 versions

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You can refine your search by selecting different attributes

Art.-no. Length Area Width Colour Quantity PU
10 m 11 m² 1.10 m Grey, White
1 pcs
20 m 22 m² 1.10 m Grey, White
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 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.

Hazardous Material

Product information

Würth Catalogue

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Flip catalog


Datasheets ()

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Technical information

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  • Outside grey – inside light grey

  • Snug-fitting installation or installation running along profile.

  • No special suspension devices required.

  • Short installation time.

  • Simple installation even in hard-to-reach places.

  • Easy retrofitting.

  • Dust-free installation.

  • Low grammage.

  • According to the MLAR (German fire protection directive), those cables covered with the fire protection fabric KB SR are classified as electrical cables with improved fire rating. (Low flammability and low smoke development)

  • Can be used in damp rooms or areas with constant wetness.

The fire protection fabric consists of a glass filament fabric and complies with building material class, class C-s2 d0 according to DIN EN 13501-1, only inside buildings. Normal flammability, class E according to DIN EN 13501-1, for outside applications.

The KB SR fire protection sleeve has a fire protection coating on the light grey inside that foams up in the event of a fire.

The grey exterior of the carrier fabric has a PU coating and can be subjected to damp cleaning without impairing the fire protection characteristics.


Up to building class 3 the fire protection fabric KB SR is approved without the consent of the building supervision below. In addition, the permissibility of application on cables and cable systems along rescue routes is to be decided upon in individual cases by the respective building supervisory board, e.g. in conjunction with the fire protection concept.

Technical approval of fire protection fabric KB SR Z-56.217-3602