Silicone Mica HP5 High‑Temperature Insulation Laminate
Extreme temperature insulation for critical environments
Silicone Mica HP5 is a high‑performance rigid insulating laminate engineered for applications exposed to extreme heat, pressure and electrical stress. Manufactured from muscovite mica paper bonded with synthetic silicone resin, HP5 delivers exceptional thermal stability, mechanical strength and non‑flammable performance in demanding industrial environments.
- 01 Application Overview
- 02 What We Solve For
Application Overview
Silicone Mica HP5 is widely used in high‑temperature thermal and electrical applications where conventional insulation materials fail. Typical applications include high‑voltage equipment, induction and arc furnaces, gas pipeline components, food processing systems and fire‑safe insulation where reliability under extreme conditions is essential.
What We Solve For
Features & Functionality
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Maintains performance at continuous operating temperatures up to 550 °C with short‑term resistance up to 800 °C.
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Offers excellent resistance to pressure and impact, supporting use in load‑bearing insulation components.
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High dielectric strength and resistance to electric arc erosion suit high‑voltage and electro‑mechanical applications.
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Naturally non‑flammable, non‑toxic and impervious to most chemicals for enhanced safety and durability.
Functionality & Options
- High‑temperature electrical insulation
- Suitable asbestos replacement material
- Available as sheets, rods, tubes and washers
- Low permeability to water and oil
- Excellent machinability for custom components
- Cut‑to‑size and specialist machining available
Key Technical Specifications
- Muscovite mica bonded with synthetic silicone resin
- Density: approx. 2.1 g/cm³
- Dielectric strength: approx. 20 kV/mm
- Continuous operating temperature: up to 550 °C
- Peak thermal resistance: up to 800 °C
- Low dielectric loss on heating
- Thickness range: 0.2 mm to 50.0 mm
- Non‑flammable and chemically resistant
Our Projects Featuring Insulect Industrial Materials
Explore our project highlights to see where Insulect industrial materials are making an impact.
For tailored advice on whether this solution suits your network, please connect with our team here.
Where you'll find our industrial materials
You'll find Insulect-supplied and installed industrial materials across Australia and New Zealand.

Why Choose Silicone Mica HP5
Silicone Mica HP5 is a purpose‑engineered insulation solution for applications where extreme heat, electrical stress and safety requirements intersect. Combining exceptional thermal resistance with mechanical strength and non‑flammable performance, it offers confidence, durability and versatility across a wide range of high‑temperature industrial environments.
Services & Support
Insulect offers comprehensive services and support for the products we manufacture and specialise in, enhancing value for local utilities, major energy users, equipment manufacturers, and service operators.
Our local technical team provides exceptional support and expertise, ensuring quick response times and personalised service to tackle any challenges that may arise during project execution.
Our team utilises advanced technology and industry knowledge to develop innovative and efficient high voltage switchgear solutions, customised to fit the unique requirements of each project.
We facilitate smooth procurement and logistics processes by sourcing from trusted, proven partners and coordinating timely deliveries, ensuring projects remain on schedule and within budget.
We are able to oversee every phase from concept to completion, providing comprehensive solutions that simplify complex projects and ensure successful outcomes.
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