Glass Mica Cable Tape with Polyester Film (GMPCAB)

General Details
Ruby Mica® GMPCAB Tape is a lamination of uncalcined phlogopite/muscovite mica paper with PET film one side and glass cloth on the other, making it a three-layer high-performing mica tape. What makes this tape truly special is its unique blend of high tensile strength imparted by glass cloth, strong electrical resistance borrowed from the PET film and superior thermal-sustenance brought about by the use of the best quality mica there is. A high thermal-grade silicone resin is used as a binder, making it a class ‘H’ insulation product.

An additional layer of PET film secures the mica paper in its position at all times, while providing a seamless mica tape lapping on the wires. The addition of PET film to the glass mica tape reduces the hassle and one time-consuming activity for the cable companies who wrap a single layer of PET film on their cables after wrapping the glass mica tape as well.PET film adds on 3.5kV of break down voltage protection to electric cables operating below 120°C. We ran a lot of suitability tests in our labs in order to study the behavior of PET film at different temperature increments and found out that it simply vanishes without a single trace at 600°C. Thus you can rest assured that the PET film enhances the mica tape’s workability multi-fold without altering its fire-fighting properties in any way.


Glass Mica Cable Tapes impart fire-resistant properties to the electric cables and are suitable for power and control cables, instrumentation and signaling cables. Circuit-integrity is ensured by these tough and resilient FRLS cable tapes during fire and in high-temperature environments up to 950°C. Due to their superior flexibility and tensile strength, all our GMCAB / GMPCAB tapes are high-speed taping machine-compatible. The product is compliant to IEC 60371-3-8.


Length : 300-500 m
Tape width : 5-10mm or in multiple of 5mm up to 1000mm
Core ID. : 76mm (max roll diameter – 310mm)

Traverse spool:
Length : 500m — 15km
Tape width : 5-10mm or in multiple of 5mm up to 1000mm
Core ID. : 76mm, 120mm (max roll diameter – 310mm)

Traverse spools can be customized as per desired specifications.


Tapes are packed in airtight mechanically strong boxes protecting them from dirt, dust and moisture. The packaging also ensures safe transit and storage.


12 months at 20° C

Techical Info
Properties Test Method Unit Value Value Value
Nominal Thickness IEC 60371 – 2 mm 0.12 ± 0.02 0.14 ± 0.02 0.16 ± 0.02
Total Substance IEC 60371 – 2 g/m² 170 ± 17 225 ± 20 257 ± 20
Mica Paper IEC 60371 – 2 g/m² 100 ± 7 150 ± 10 180 ± 10
Glass Content IEC 60371 – 2 g/m² 35 ± 3 35 ± 3 35 ± 3
Polyester Film IEC 60371 – 2 g/m² 16 ± 3 16 ± 3 16 ± 3
Resin Content IEC 60371 – 2 g/m² 19 ± 4 24 ± 4 28 ± 4
Tensile Strength IEC 60371 – 2 N/cm >150 >150 >150
Break Down Voltage IEC 60243 -1 Kv > 4 > 4 > 4
Volatile Contents IEC 60371 – 2 % < 0.5 < 0.5 < 0.5

Data is based on test performed by Ruby Mica Co. Users are advised to verify and ensure suitability for intended applications. The above product can be tailored according to your desired specifications.

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