K-FLEX ST/SK Self-Seal - 40mm Wall Thickness – Elastomeric, Tube Insulation, 40mm

K-FLEX ST/SK Self-Seal Tube

22mm / 9mm
£3.78
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K-FLEX ST/SK Self-Seal - 40mm Wall Thickness – Elastomeric, Tube Insulation, 40mm

K-FLEX ST/SK Self-Seal Tube

£3.78

K‑FLEX ST/SK Self‑Seal Tube is a flexible elastomeric tube with factory‑applied adhesive closure (also available with overlap) for fast, clean installation. It provides the same closed‑cell performance with reduced installation time and consistent sealing.

Key Features

  • Self‑seal adhesive closure system for rapid fit‑off.
  • Service temperature (ST/SK): −40 °C to +85 °C.
  • Fire performance (ST/SK): Euroclass BL‑s2,d0.
  • Supplied in 2 m lengths across common HVAC bores and thicknesses.

Thermal Conductivity

Thermal Conductivity (EN 12667 / EN ISO 8497)
Thickness Temperature λ [W/m·K]
≤ 25 mm −20 °C 0.031
≤ 25 mm 0 °C 0.033
≤ 25 mm +20 °C 0.035
≤ 25 mm +40 °C 0.037
> 25 mm −20 °C 0.034
> 25 mm 0 °C 0.036
> 25 mm +20 °C 0.038
> 25 mm +40 °C 0.040

Installation Notes

  • Align and press adhesive edges together along the longitudinal seam; seal joints with compatible tape where required.
  • For overlap version, follow the manufacturer’s guidance to position and close the pre‑applied overlap.

Compatible Accessories

Complete your installation: ST Tube · K-420 Adhesive · AT070 Tape

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