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Power-teK® FM 620/640/660
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Power-teK® FM 620 / 640 / 660 is a non-combustible Rock Mineral Wool felt mat. As a universal solution for lining or multi-layer insulations, depending on the density, it is available for high-temperature applications with maximum service temperatures of up to 660 °C.

Knauf Insulation Power-teK® FM 620 / 640 / 660 are produced with ECOSE® Technology, a patented binder system, based entirely on renewable raw materials.

APPLICATION

  • Pipe insulation incl. elbows
  • Furnaces & other equipment
  • Boilers & tanks*
  • Irregular shapes (filling the gaps)

(*for bigger vertical surfaces we recommend to consider wired mats due to better handling and secure fixing)

The product is recommended for thermal and sound insulation of the defined applications within technical insulation:

  • in case of high-temperature applications
  • when additional flexibility is required (also used as filling material)

Remark on certificates:

  • EPD valid for FM 620 and FM 640 
  • Keymark E valid  for FM 640 and FM 660
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CE
RAL
EUCEB
Eurofins  GOLD Indoor Air Comfort
Marine equipment directive
Keymark
Material Melting Point
EPD
Power-teK® FM 620/640/660
Description & Details
Documents

Description & Details

Power-teK® FM 620 / 640 / 660 is a non-combustible Rock Mineral Wool felt mat. As a universal solution for lining or multi-layer insulations, depending on the density, it is available for high-temperature applications with maximum service temperatures of up to 660 °C.

Knauf Insulation Power-teK® FM 620 / 640 / 660 are produced with ECOSE® Technology, a patented binder system, based entirely on renewable raw materials.

APPLICATION

  • Pipe insulation incl. elbows
  • Furnaces & other equipment
  • Boilers & tanks*
  • Irregular shapes (filling the gaps)

(*for bigger vertical surfaces we recommend to consider wired mats due to better handling and secure fixing)

The product is recommended for thermal and sound insulation of the defined applications within technical insulation:

  • in case of high-temperature applications
  • when additional flexibility is required (also used as filling material)

Remark on certificates:

  • EPD valid for FM 620 and FM 640 
  • Keymark E valid  for FM 640 and FM 660

THERMAL CONDUCTIVITY CALCULATOR

Downloads

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Technical Data Sheets
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DoP Power-teK FM 620/ALU
pdf/21 Nov 2025/514.9 KB
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DoP Power-teK FM 640/ALU
pdf/21 Nov 2025/514.9 KB
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DoP Power-teK FM 660/ALU/VWS 020
pdf/21 Nov 2025/555.5 KB
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Knauf Insulation TS Product catalogue _EN 2025
pdf/10 Oct 2025/8.2 MB
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Spec. text Power-teK FM 620
docx/1 Jun 2023/20.6 KB
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Spec. text Power-teK FM 640
docx/1 Jun 2023/21.4 KB
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Spec. text Power-teK FM 660
docx/1 Jun 2023/20.5 KB
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Keymark Certificate Power-teK WM, FM 660; Fire-teK WM, FM 910
pdf/11 Nov 2025/71.5 KB
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KI TS Power-teK brochure__Power of insulation in industry _EN
pdf/6 May 2025/1.5 MB
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Technical data sheet Power-teK FM 620-640_660 TDS_EN
pdf/8 Dec 2025/346.7 KB
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Packaging specifications Power-teK FM
pdf/15 Sep 2025/36.2 KB
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KITS_EPD Power-teK FM 620
pdf/25 Sep 2025/946.0 KB
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KITS_EPD Power-teK FM 640
pdf/25 Sep 2025/949.3 KB
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Technical data

Attribute nameSymbolValueUnitNorm
Thermal conductivity (50ºC)0,040W/(mK)
Reaction to fireA1
Maximum service temperature620-660°C
Apparent density70-100kg/m3
Product typeFelt mat
Insulation solution for:Industry