Standard product grades1000°C
Primary classification reference across the high-temperature product range.
High-temperature insulation systems
Microporous insulation for high-temperature equipment.
Siltherm combines low-conductivity microporous materials with rigid, flexible and preformed formats for tight backup spaces and difficult equipment geometry.
Classification temperature
High-temperature grades classified at 1000°C and 1050°C.
Standard grades are classified at 1000°C. Selected higher-grade Board, Board 3D and AluFlex variants are classified at 1050°C.
Selected higher-grade variants1050°C
Listed for selected Board, Board 3D and AluFlex Grade 1100 variants.
Classification temperature is a material reference. The recommended grade still depends on the exposure and the way the insulation is installed.
Space-efficient thermal resistance
Reach the thermal target with less insulation build-up.
Siltherm microporous insulation stays effective as mean temperature rises. In the reference comparison, it reaches the thermal target with less build-up than the selected conventional materials.
As little as one-fifth the thermal conductivity of selected conventional insulators
About half the thermal conductivity of silica aerogel in the reference comparison
Reference material familiesMineral woolCalcium silicateFibre blankets and boards
The comparison changes with grade and mean temperature. Final thickness is calculated for the installed assembly.
Thermal boundary
Insulation performance depends on the complete assembly.
Read the heat path from the hot face to the protected shell. That makes the available insulation zone clear before a product form is chosen.
Process temperature and exposure profile
Hot-face material and stored heat
Thermal resistance within the available build-up
External temperature and surrounding interfaces
Product format map
Match product format to geometry and thermal duty.
A flat lining may call for a board or panel. Curves and pipework need a format that can follow the equipment without heavy site conversion.
01
Rigid board
Siltherm Board
Flat linings and machined components
A rigid microporous board available raw or with selected coverings for backup insulation and shaped component routes.
Iron and steel applicationNominal range5-50 mm
02
Encapsulated rigid panel
Siltherm Panel
Clean handling across large flat areas
A glass-cloth encapsulated microporous panel developed for handling, cutting and integration into high-temperature equipment.
Nominal range5-50 mm
03
Stitched flexible panel
Siltherm Quilt
Curves, pipes and irregular surfaces
Cross-directional stitching allows the microporous layer to follow simple or complex curved geometries.
Iron and steel applicationNominal range3-12.5 mm
04
Preformed rigid section
Siltherm Pipe
Pipework, elbows and curved segments
Preformed microporous sections reduce site shaping around defined pipe diameters and can be configured in layered builds.
Nominal range20-50 mm single layer
05
Aluminised flexible panel
Siltherm AluFlex
Molten-metal equipment and compressed interfaces
An aluminised, water-repellent envelope supports clean manipulation where moisture-bearing castables or mortars may be present.
Iron and steel applicationNominal range5 / 7 / 10 mm
06
Machinable rigid board
Siltherm Board 3D
Profiles, recesses and defined components
A machining-suitable rigid grade for components that need repeatable geometry and defined surface detail.
Nominal range5-20 mm
07
Foldable slatted panel
Siltherm SlatFlex
Large cylindrical and conical equipment
Made-to-measure microporous slats in a glass-cloth envelope allow a larger panel to follow a controlled radius.
Iron and steel applicationNominal range10-50 mm
Standard dimensions support an initial comparison. Siltherm will confirm the suitable grade and current availability for the application.
Selection sequence
Five questions narrow the product format.
- 01Exposure
Continuous, cyclic, transient or localised heat?
- 02Build-up
How much insulation thickness and external space are available?
- 03Geometry
Flat, curved, segmented, penetrated or irregular?
- 04Interface
What compression, covering, fixing and adjacent materials are involved?
- 05Evidence
Which temperature, test condition and assembly boundary must be validated?
Operating environments
Explore product formats across industrial environments.
Industry pages place the insulation format inside the heat source, equipment geometry and validation context that determine useful performance.
Technical performance
Compare performance with the relevant test conditions.
Thermal data becomes useful when the product grade, test method and mean temperature match the comparison being made.
Define the hot face, available space and geometry.
These details are enough to identify a starting point. Keep confidential drawings and proprietary construction details out of the initial enquiry.
Discuss a high-temperature application