340 Brandschutz Silikon

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The fire protection silicone without corrosive properties

340 Brandschutz is the ideal sealant when glazing or construction joints need to be provided with a flame-retardant seal. The ready-to-use silicone rubber is characterised by its strong heat resistance up to 250°C. Due to its excellent adhesion and non-corrosive properties, this neutral-cure silicone is also suitable for sealing expansion and butt joints in metal structures. After curing fully, 340 Brandschutz is rated at building material class B1 in accordance with DIN 4102 between metallic and/or solid mineral building materials.  

Tested fire protection quality to satisfy building regulations
Does not cause corrosion on metals
Chemical-resistant

Properties

  • Maximum movement accommodation: 25%
  • UV-resistant
  • Compatible with a wide range of materials
  • Heat and fire-resistant
  • Elastic
  • Fast-curing
  • Resistant to weather and ageing
  • Compatible with laminated safety glass

Standards

  • DIN 4102 – B1

Technical data

Elongation at break
~ 120 % (EN ISO 8339)
Stress at break
~ 0,44 N/mm² (EN ISO 8339)
Temperature resistance
-50°C to +200°C, short time up to +250°C
Basis
Neutrally cross linking oxime system
Movement capability
approx. 25%
Shore hardness
transparent: ~ 24 / coloured: ~ 36 (EN ISO 868)
Processing temperature (substrate, environment)
+5° C bis +35°C
Curing time
~2 mm/24 hours (at +23°C / 50 relative humidity)
Density
transparent: ~ 1.00 / coloured: ~ 1.34 (EN ISO 1183-1)
Shrinkage
~ 5% (EN ISO 10563)
Skin over time
~ 7 min. transparent (23°C/50 % relative humidity)
Storage life
12 months in a cool and dry place
Tear strength
transparent: ~ 4.32 N/mm / coloured: ~ 6.84 N/mm (ISO 34-1)
Modulus
~ 0,42 N/mm² (EN ISO 8339)

Applications

Main applications

Illustration Backrohr mit grün markierter Dichtung
Sealing ovens
The high temperatures need to be factored in when sealing an oven.
Illustration von Brandschutzdichtungen für Fenster und Türen, Flammen im Vordergrund
Fireproof seals in building and construction
Highly flame-retardant materials in buildings must be jointed using tested fire protection sealants.

Other applications

Sealing metal fire doors
The non-corrosive properties of fire protection sealants prevent damage to metal parts.
Sealing fire-retardant plasterboard
In interior spaces, low emitting fire protection sealants are used to seal flame-retardant materials.
Sealing fire-resistant glazing
The right sealant will strengthen fire-safe glass.
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