Mica Strip
Advanced Seals & Gaskets Ltd supply a wide range of Mica strips, part of our extensive offering of electrical insulation materials, including papers, resins, laminates, and plastics. Thanks to our strong network of suppliers, we provide high-quality mica products suitable for electrical and industrial applications.
Mica is produced by bonding layers of mica paper with a resin, which are then cured into rigid or flexible boards. Boards are available in thicknesses from 0.10mm to 50mm and in sheet or roll form, which we convert into cut strips or tapes.
Mica strips are sometimes referred to as electrical insulation strips, insulation tapes, isolation strips, or electrical tape. All strips are made to order by our skilled workforce, using state-of-the-art machinery, including bandsaws, strippers, log cutters, and presses, depending on the size and quantity required. In-house production ensures consistent high-quality output.
Product Enquiry
For more information on Mica Strips, complete the quick enquiry form or call +44(0)1384 252555.
Key Characteristics of Mica
- Colour: Muscovite (white) mica and Phlogopite (green) mica
- Sheet Size: 1000 x 1200 mm
- Thickness Range: 0.1mm – 50mm (depending on grade)
- Density: 2.6 – 3.2 g/cm³
- Temperature Range: 500°C to 1000°C (depending on grade)
- Flame Resistance: Flame retardant and non-flammable
- Chemical Resistance: Inert to water, most acids (except hydrofluoric and concentrated sulphuric), alkalis, conventional solvents, and oils
Full technical data is available upon request or via our online portal.
What are Mica Strips?
Mica strips are pre-cut lengths of electrical insulation material, available in rigid or flexible sheets. They are used as spacers or gap fillers to support electrical conductors without allowing electrical current to pass through.
Mica belongs to a group of alumina, iron, calcium, magnesium, and alkaline mineral silicates, and is available in two mineral types:
- Muscovite Mica – white, high dielectric strength, widely used in electrical applications
- Phlogopite Mica – green, high heat resistance, available in flexible or rigid forms
Mica strips can be converted into custom widths and lengths, making them ideal for electrical insulation applications.
Why use Mica Electrical Insulation Strips?
Mica strips provide a barrier to electrical current, protecting conductors from accidental contact during installation, repairs, or use.
They also offer thermal, electrical, and flame resistance, along with rapid heat transfer and mechanical strength, making them ideal for:
- Fire door fittings
- Heat shields in vehicles and aircraft
- Electrical devices and machinery
These properties allow safe operation in high-temperature environments, protecting equipment and operators.
Benefits of Mica
- Heat Resistance – up to 1200°C (Phlogopite)
- Excellent flexural strength – easy to punch and machine
- High dielectric strength – low electrical conductivity
- Incombustible – asbestos and halogen-free
- Chemical resistance – acids (excluding sulphuric), bases, mineral oils, and solvents
Other Types of Electrical Insulation Materials Available
At Advanced Seals & Gaskets, we work with multiple suppliers to provide alternatives to mica strips for a range of electrical insulation applications:
- Epoxy Glass – Green, mechanically strong, chemically resistant, low moisture absorption, working up to +120°C
- Kapton – Polyamide film with chemical, electrical, thermal, and mechanical properties; ideal for extreme vibration and temperatures
- Leatheroid – Grey/blue paper gasket material, used to insulate hot elements
- MYLAR – Strong, flexible polyester film with excellent dielectric and moisture resistance
- Nomex – Paper or board, high temperature, mechanical and dielectric strength
- Presspahn – Brown kraft wood pulp sheets, excellent physical and mechanical properties for insulation
- SRBF – Resin-bonded fibre, rigid, operating temperature up to 120°C, resistant to wear and chemicals
- SRBP – Synthetic resin-bonded paper, suited for medium and high voltage applications
- Valox – Electrical insulation with flame retardant properties
- PTFE – Non-conductive plastic, high temperature and dielectric strength
- PVC – Lightweight, abrasion, chemical, moisture resistant, and electrically insulating
Advantages of Using Mica Strips
Mica strips offer a range of benefits for industrial and electrical applications:
- Resistance to high temperatures
- Chemical resistance and durability
- Available in rigid or flexible forms, suitable for diverse applications
- Ideal for furnace insulation, automotive gaskets, fire protection, and electrical barriers
Muscovite mica strips provide high dielectric strength and excellent electrical insulation, while Phlogopite mica strips offer higher heat resistance, withstanding temperatures up to 1200°C. Both types are dielectric, making them perfect as electrical insulators in:
- Circuit boards
- Industrial machinery
- Automotive components
- Medical devices
Please contact us using the form below or by calling us on +44(0)1384 252555.