NBRAM's flexible mica roll bends to a 2 mm radius without cracking, holds 25–30 kV/mm dielectric strength after repeated flexing, and withstands continuous temperatures up to 800 °C. Custom thicknesses and widths for EV motors, transformers and industrial heating.
NBRAM's flexible mica roll is a high-temperature mica insulation roll engineered for tight, complex geometries. It wraps around motor windings, coils and irregular assemblies without cracking or delaminating, and keeps its dielectric strength stable through repeated flexing — making it a dependable insulation choice for EV motors, transformers, aerospace systems, household appliances and industrial heating equipment.
| Thickness | 0.11 – 10 mm |
| Minimum bend radius | 2 mm without cracking or delamination |
| Volume resistivity | 2.0 × 10¹⁵ Ω·cm |
| Dielectric strength | 25 – 30 kV/mm, maintained after repeated flexing |
| Tensile strength | 120 – 150 N/10 mm width |
| Elongation at break | 8 – 12% |
| Continuous operating temperature | Up to 800 °C |
| Roll width & length | Made to order, custom slitting available |
Flexibility is only valuable if it lasts. Each batch of NBRAM flexible mica roll undergoes flex-cycle testing that simulates years of installation and operational stress, so long-term performance can be predicted before the material reaches your line. Tension-controlled winding prevents stress that could alter flexibility, while protective cores and moisture-resistant packaging preserve material properties during storage and shipping.
What is a flexible mica roll?
A flexible mica roll is a continuous roll of mica insulation that can bend around tight radii without cracking. It combines the dielectric and thermal properties of mica with a flexible bonding matrix, so it conforms to complex geometries during motor, coil and transformer assembly.
What thicknesses are available?
Standard flexible mica roll thickness ranges from 0.11 mm to 10 mm. Thickness and roll dimensions can be customized to your insulation design.
What is the maximum operating temperature?
NBRAM flexible mica roll maintains stable insulation performance in continuous operation up to 800 °C.
How is it different from rigid mica sheet or mica tape?
Rigid mica sheet offers high mechanical stiffness but limited conformability, while mica tape is narrow and designed for wrapping. A flexible mica roll provides a wide, continuous insulation format with a 2 mm minimum bend radius — ideal for covering larger curved or irregular surfaces efficiently.
Can NBRAM supply custom widths and samples?
Yes. NBRAM produces custom roll widths and lengths with slitting options, and provides samples for evaluation before volume orders. Send your drawing or specification and our engineering team will respond with a quotation.
Looking for a reliable flexible mica roll manufacturer? NBRAM supplies high-temperature mica insulation to customers worldwide, backed by more than 20 years of electrical materials expertise. Explore our mica roll series, flexible mica sheet, motor insulation mica tape and fire-resistant cable mica tape, or send your inquiry — we reply within 24 hours.
