Heat-Resistant Electrical Insulating Tubes

Insulating silicone tubes for conductive elements

  • Inner diameter from 3 to 30 mm.
  • Wall thickness from 0.6 to 5 mm.
  • Operating voltage up to 1000V.
  • Operating temperature up to + 2500C.
  • Available in reels of infinite length.
  • They do not support combustion. At a temperature significantly higher than the working temperature, a non-conductive layer of silicon oxide is formed on the metal surface.
Type of rubber Heatproof Fireproof Silicone forming
Indicator
Hardness (Shore) 55-65 65-75 65-75 75-85 65-75
Tensile strength (MPa) 6-9 5-8 6-10 6-10 6-8
Tear strength (kN/m) 10-25 10-25 9-20 9-20 8-16
Compression set (%, 22 hours x 1770C x 25%) До 55 До 35 До 70
Elastic recovery (%) 45-52 42-52 42-52
Residual modulus at 100% elongation (MPa) 1,5-2 1,5-2 3-4
Linear shrinkage (%) 2,4-3,4 2-4
Dielectric strength (on a 2 mm thick sample) kV/mm 22 21 26
Dielectric constant at 1 MHz 2,8 2,8 2,8-3,2 2,8-3,2 3,1
Dielectric dissipation factor at 1 MHz 4х10-3 3,5х10-3 3х10-3х4х10-3 3х10-3х4х10-3 5,1х10-3
Tracking resistance, KV 3,5 3,5
Volume resistance (Ohm x cm) 2х1015 2,2х1014 5,4х1015 5,4х1015 6,1х1015
Oxygen index (LOI), % 40-45 40-45 28,3
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