SIHF-CU-Si braid screened multicore silicone flex

SIHF-CU-Si braid screened multicore silicone flexible cable is designed for power and control use. Suitable for high or low temperature applications where traditional PVC materials would become brittle. If the cable burns an insulating layer of silicone dioxide will remain, rendering the cable short circuit proof.

These SIHF-CU-Si screened multicore silicone cables are halogen free and suitable for use at constant temperatures up to 180°C. The tinned copper wire braid (TCWB) provides protection against electrical interference

The silicone compound used is more accurately called polymerizedsiloxane or polysiloxanes. It is resistant to vegetable and animal fats, to many types of oil and many diluted acids. There is no decomposition on exposure to alcohol or alkaline solutions. 

The term halogen free (interchangeable with the term zero halogen) guarantees that if burnt the cable will produce less than 0.5% HCL (hydrogen chloride) emissions. This provides increased safety in the case of a fire. For a more in-depth explanation of halogen free & zero halogen properties please see our LSZH Control Flex front page. 


Construction – SIHF-CU-Si screened multicore silicone
fine stranded tinned copper conductors
silicone rubber core insulation
silicone inner sheath or polyester tape
tinned copper wire braid screen
brick red silicone outer sheath 


Technical – SIHF-CU-Si screened multicore silicone
    conductor make-up:     class 5 (flexible fine stranded), see Stranding/Resistance page
    bend radius:     20 x overall diameter (O/D) flexing, 6 x O/D fixed
    voltage rating:     300V/500V operating, 2000V test
    current rating:     as per silicone single & multicore chart, see Current Ratings page
    temperature range:     -50°C to +180°C fixed operating, up to +200°C intermittent
    flame retardant:     according to IEC 60332-1
    acid gas emission:     according to IEC 60754-1, IEC 60754-2
    core identification:     2 cores = coloured to VDE 0293 without earth (green/yellow)
      3-5 cores = as above with earth (inc. in core count), see Colour Codes page
      6+ cores = numbered black cores with earth (inc. in core count)


A printable specification is available here: SIHF-CU-Si braid screened multicore silicone flex.


For non-screened versions return to the High Temperature Silicone front page.


All measurements should be considered nominal and images for illustration purposes only. Although Central Cables Ltd has made every reasonable effort to ensure its accuracy, the information contained herein is subject to error or omission and to change without notice. In no event will Central Cables Ltd be liable for any damages whatsoever, arising in connection with the information described.