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No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
Phlogopite mica tube is produced by wrapping phlogopite mica paper with silicone resin as the binder, then curing the roll under heat and pressure. The result is a rigid, round insulating tube with 700 ℃ continuous service rating and 1000 ℃ intermittent rating — the highest in the Rongtai mica tube family.
The tube is used where a fixed-shape insulation channel is required: motor windings, electric furnace electrode supports, arc-furnace hardware and metallurgy industry equipment. It contains no asbestos and releases less smoke and odour under heating than traditional insulation tubes.
Same high mica loading for both muscovite and phlogopite tube
Dense construction for high mechanical load
Ω·cm at 23 ℃ per IEC 60243-1
Standard upper ID / lower OD, tighter on request
The high-temperature option. Phlogopite mica paper keeps its dielectric layer at higher temperatures than muscovite, so this is the grade specified for furnaces, metallurgy equipment and motors that run hot.
The standard general-purpose option. Muscovite mica paper delivers the same dielectric performance and mica content at a lower continuous service temperature, and it is the cost-effective choice for standard motor and appliance insulation.
Tolerance standard: general production uses upper tolerance for inner diameter and lower tolerance for outer diameter. On request, tolerances can be controlled within 0.2 mm. Custom lengths, diameters and wall thicknesses are produced to drawing.
700 ℃ continuous and 1000 ℃ intermittent service for the phlogopite grade. Heat loss below 1% at 500 ℃ and below 2% at 700 ℃ per IEC 60371-2.
Dielectric strength above 1.5 kV/mm and insulation resistance around 10¹⁶ Ω·cm at 23 ℃. Stable barrier layer for fixed-shape electrical equipment.
Density 1.6–2.2 g/cm³ with high radial compressive strength. The tube does not deform under motor winding loads or electrode support pressure.
Excellent resistance to acid, alkali and oil with good ageing resistance. Withstands long-term exposure to industrial atmospheres and lubricants.
The formulation contains no asbestos and releases less smoke and odour than traditional insulation materials, even under heating. UL94 V-0 flame rating.
Smooth inner and outer walls with good roundness and proportionality. Tolerances held to upper ID / lower OD by default, or down to ±0.2 mm on request.
Both use the same construction — mica paper wrapped with silicone resin — and both carry mica content around 85% with dielectric strength above 1.5 kV/mm. The difference is the mica paper: phlogopite runs to 700 ℃ continuous / 1000 ℃ intermittent, while muscovite runs to 500 ℃ continuous / 800 ℃ intermittent. Choose phlogopite for furnaces and metallurgy equipment; choose muscovite for standard motor and appliance insulation. See Muscovite Mica Tube for the standard grade.
Standard lengths run 10 mm, 20 mm, 50 mm, 100 mm, 300 mm, 500 mm up to 1100 mm. Standard diameters run 8 mm, 10 mm, 15 mm, 50 mm, 100 mm, 200 mm up to 300 mm. Custom lengths and diameters are produced to drawing, with wall thickness set for each size.
Default production uses upper tolerance for inner diameter and lower tolerance for outer diameter — this gives a consistent fit on standard winding mandrels. On request, tolerances can be controlled within 0.2 mm for precision assembly.
Motor winding insulation, electric furnace electrode supports, arc-furnace hardware, metallurgy industry equipment and any application where a fixed-shape insulating channel is required at high temperature. The tube is also used as electrical insulation in appliances and industrial control gear.
No asbestos is used in the formulation. The tube carries a UL94 V-0 flame rating per UL94 test procedure and produces less smoke and odour than traditional insulation materials under heating.
Tell us the length, inner diameter, outer diameter, wall thickness and tolerance requirement. Kaxite will confirm the R-5461-P specification, lead time and price for your tube.
Address
No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
0086-574-87527773
No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China