BLUESIL MF 8465 U may be stored at temperatures between -5°C / 23°F and 40°C / 104°F for up to 18 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


Silicone master batch, heat curing after addition of a vulcanization agent (chosen according to the processing method).

Fire Protection;Heat Protection;High Temperature Protection;Protection

HCR Masterbatch

  • Slight refreshening after prolonged storage.
  • Easy processing.
  • No post-curing.
  • Outstanding dielectric properties.
  • Outstanding release on non tin-plated copper with the use of dichloro-21 benzoyl peroxide and heat curing in a molten salt bath.

BLUESIL MF 8465 U gives exceptional fire performance after heat curing. When exposed to a flame, it transforms itself into an insulating and ceramic material capable of withstanding thermal stress and mechanical impact. This explains its outstanding performance during the test conditions described in the following standards:

  • NFC 32070 CR1
  • BS 6387 class Z
  • EN 50200

BLUESIL MF 8465 U is the ideal material for the insulation of fire-resistant safety cables.
BLUESIL MF 8465 U, although especially recommended for cabling, can be processed using traditional techniques and on equipment widely found in the rubber industry.

Asia Pacific;Europe Middle East Africa;Central and South America;North America




Elongation240MonocompNF ISO 37%
Hardness72MonocompASTM D 2240sh.A
Density1.24MonocompISO 2781g/cm3
Tensile strength8.0MonocompNF ISO 37MPa

























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