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Tyco SRFR-4/2.9 Highly Flexible Silicone Rubber Heat Shrink - 4.0mm / 2.9mm - Grey

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Tyco SRFR-4/2.9 Highly Flexible Silicone Rubber Heat Shrink - 4.0mm / 2.9mm - Grey

4.0/2.9mm Silicone Heat Shrink - Highly flexible tubing with excellent physical, chemical and temperature properties. Genuine Tyco/TE Connectivity Material!

Order in multiples of 1 mtrs to receive a continuous length, up to the next price break at 5 mtrs

For example, 4 x 1 mtrs will be delivered as a continuous 4 mtr length

Excl. VAT: £26.49 Incl. VAT: £31.79
  • Buy 5 for £25.00 (£30.00 incl. tax) each
  • Buy 10 for £24.00 (£28.80 incl. tax) each
  • Buy 15 for £23.00 (£27.60 incl. tax) each
  • Buy 20 for £22.00 (£26.40 incl. tax) each
Product Info


SRFR-4/2.9 Silicone Heat Shrink is a specially formulated product that is highly flexible at extreme temperatures, with an excellent balance of physical and electrical properties. Unlike other silicone materials, SRFR displays outstanding physical strength. It resists extreme heat shocks and exhibits good thermal insulation.

SRFR is nonburning and has outstanding ablative properties as well as excellent physical and electrical properties.

Used throughout the medical industry because of its ability to withstand exposure to sterilisation conditions. Other applications include thyristor power cable insulation, heating element and bus bar insulation, fiber optic bundle sheathing, and rocketry support cable protection.

 Features & Benefits

  • Extremely flexible at high & low temperatures
  • Highly flame retardant
  • Good chemical & solvent resistance
  • 1.7:1 shrink ratio

Operating Temperature

  • -75°C to +200°C


  • Minimum shrink temperature +135°C
  • Minimum full recovery +175°C

Specifications / Approvals

  • UL E85381 VW-1 600v, 200°CC
  • RW-2057

Can't find what you are looking for?

If you can’t find what you are looking for, or need volume discounts, give us a call on +0044 1942 723101. Our sales team are always happy to help!

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