Superwool Papers

Low Biopersistent Insulation Papers for Sealing, Heat Shielding and Thermal Management

Lightweight, Flexible Thermal Insulation for Applications up to 1400°C

Superwool® Papers are high-performance insulation papers manufactured from advanced low biopersistent AES fibres and specialised binder systems. Designed to provide reliable thermal insulation, sealing performance and ease of fabrication, Superwool Papers offer an effective alternative to traditional paper, textile and metallic thermal management materials.

Lightweight, flexible and easy to fabricate, Superwool Papers combine low thermal conductivity with excellent thermal stability and resistance to thermal shock. Their unique fibre chemistry provides exceptional performance in demanding industrial environments while offering excellent resistance to molten aluminium wetting, making them particularly suitable for non-ferrous metal processing applications.

Available in Superwool Plus Paper, Superwool Prime Paper (previously Superwool HT) and Superwool XTRA Paper grades, the range provides solutions for thermal insulation, high-temperature gasketing, heat shielding and thermal processing applications.

Why Choose Superwool Paper

Superwool Papers combine thermal insulation performance with excellent flexibility and fabrication characteristics, providing versatile solutions for high-temperature sealing and thermal management applications.

Low biopersistent AES fibre technology
Excellent thermal insulation performance
Thin, flexible high-temperature insulation
Low thermal conductivity
Low heat storage characteristics
Excellent tensile strength
Immune to thermal shock
Easily die-cut into complex shapes
Excellent resistance to molten aluminium wetting
Suitable for thermal insulation, gasketing and heat shielding applications

Superwool Technical Data

Property	Superwool Plus	Superwool Prime	Superwool XTRA
Classification Temperature	1200°C	1300°C	1400°C
Continuous Use Temperature	1000°C	1200°C	Application Depending
Density	180-250 kg/m³	180-250 kg/m³	190-210 kg/m³
Chemical Analysis (%)
Al₂O₃	Trace	Trace	32-38
SiO₂	62-68	62-72	27-33
CaO	26-32	30-35	-
MgO	3-7	<0.5	0.5-1.5
K₂O	-	-	23-28
ZrO₂	-	-	5-9
Other	<1	<0.5	<0.5

Typical Applications

Superwool Papers are used in applications where lightweight, flexible insulation materials are required to provide thermal protection, sealing performance and heat management in demanding operating environments.

Industrial and domestic appliance gasketing
Non-ferrous ingot mould liners
Aluminium transfer system back-up insulation
Parting media in induction furnaces
Automotive heat shields
High-temperature gaskets and seals
Thermal barriers
Heat shielding systems
Fabricated insulation components

Typical Industries

Superwool Papers are specified across industries where thermal efficiency, process reliability and high-temperature sealing performance are critical to operational success.

Aluminium production
Non-ferrous metals processing
Automotive manufacturing
Appliance manufacturing
Heat treatment
Industrial furnaces
Appliance manufacturing
Process engineering
Thermal insulation fabrication
General industrial manufacturing

Technical Support and Specification Guidance

Selecting the correct insulation paper is critical to achieving thermal efficiency, sealing performance and long-term reliability. Factors such as operating temperature, thermal cycling, fabrication requirements and process conditions should all be considered during material selection.

Our technical team provides support across product selection, thermal performance optimisation and application design, ensuring the most suitable Superwool Paper grade is specified for your operating conditions and application requirements.

Need help specifying the right material?

Speak with our technical specialists to discuss your insulation, sealing or thermal management requirements. We can assist with material selection, grade selection and application-specific performance guidance.

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