Non-Reinforced Ceramic Fiber Twisted Rope

Ceramic Fiber Textiles

Non-Reinforced Ceramic Fiber Twisted Rope

Code prefix CTR

Non-reinforced ceramic fiber twisted rope is made from aluminosilicate ceramic fiber as the main raw material, supplemented with viscose fiber and twisted without adding glass filament or stainless steel wire. Continuous use temperature reaches 1000 C and short-term tolerance 1260 C. It combines high-temperature insulation with thermal shock resistance and resists splash erosion from molten aluminium and zinc. Because no metal or glass is added, the product keeps stable dielectric behaviour and does not shield electromagnetic fields.

Continuous
1000°C
1832 °F
Short peak
1260°C
2300 °F
Construction
Unreinforced
CTR

Spec sheets are issued against the confirmed grade, with the test method named on the report.

01 — Product description

Product description

  • Material: no fiberglass or stainless steel wire reinforcement;
  • 1000°C continuous operation, 1260°C short-term emergency high-temperature resistance, adapting to multi-gradient high-temperature working conditions;
  • Electrical performance: good insulation under dry standard conditions, no electromagnetic shielding, adapting to high-temperature electrical equipment thermal insulation;
  • Good thermal insulation and sound absorption effects, good flexibility, adapting to various irregular gap sealing, filling, and thermal insulation scenarios.

Product parameters

Test ItemTechnical ValueRemarks
Product colorWhiteCeramic fiber base material supplemented with viscose fiber
Continuous use temperature1000°CStable operating temperature under static conditions; non-static conditions require separate discussion
Short-term tolerance temperature1260°CInstantaneous emergency tolerance, not recommended for long-term continuous use
Fiber diameter3~5μm
Aluminum oxide (Al₂O₃) content45~48%
Iron(III) oxide (Fe₂O₃) content0.7~1.2%
Calcium oxide & sodium chloride content0.43%
Moisture content
Organic fiber content

Note: The chemical composition is the composition of the ceramic fiber.

Product specifications

Product ModelRope Body Diameter (mm)
CTR6-3PY6.0
CTR9-3PY9.0
CTR12.5-3PY12.5
CTR16-3PY16.0
CTR19-3PY19.0
CTR22-3PY22.0
CTR25-3PY25.0
CTR30-3PY30.0
CTR38-3PY38.0
CTR50-3PY50.0
CTR60-3PY60.0

Application scope and working condition restrictions

Applicable scenarios:

  • Gap filling and thermal insulation for industrial kilns, high-temperature pipelines, and pressure vessels;
  • High-temperature sealing and thermal insulation filling for industrial furnace doors, valves, flanges, and equipment joints;
  • High-temperature furnace door curtain supporting thermal insulation, flue lining thermal insulation and sound absorption structures;
  • Thermal insulation protection and insulation isolation for high-temperature engines and precision instruments;

Working condition restrictions (important):

  • This product is a dry static high-temperature thermal insulation sealing material. It is strictly prohibited for use in liquid immersion, high-pressure water flow erosion, or strong acid or alkali corrosion conditions;
  • It does not have medium filtration function and cannot be used as a high-temperature filtration material;
  • It is not a professional cable fire protection wrapping product and is not recommended for direct use in fire-resistant cable dedicated wrapping protection;
  • It is not suitable for high-speed molten metal erosion, long-term molten liquid immersion, or high-frequency severe friction and wear conditions;
  • Insulation performance decreases significantly under humid or water-immersed conditions. It is prohibited for use in humid environment electrical insulation scenarios.

02 — Characteristics

No metal, no glass

The rope contains no glass filament or stainless steel wire, so it does not conduct and does not shield electromagnetic fields.

Dielectric stability

Insulation remains stable under dry standard conditions, which suits high-temperature electrical equipment.

Multi-gradient duty

1000 C continuous operation with 1260 C short-term emergency tolerance.

Flexible filling

Good thermal insulation, sound absorption and flexibility for irregular gap sealing, filling and insulation.

03 — Typical properties

Values typical, confirm against duty

Test itemValueNote
ColourCeramic fiber with viscose fiber
ContinuousStatic conditions
Short excursionEmergency only
Fiber diameterSpun staple
Al2O3Base fiber chemistry
Fe2O3Base fiber chemistry
CaO and NaClBase fiber chemistry

04 — Standard sizes

Product codeDimensions
CTR6-3PY6.0 mm rope body diameter
CTR9-3PY9.0 mm rope body diameter
CTR12.5-3PY12.5 mm rope body diameter
CTR16-3PY16.0 mm rope body diameter
CTR19-3PY19.0 mm rope body diameter
CTR22-3PY22.0 mm rope body diameter
CTR25-3PY25.0 mm rope body diameter
CTR30-3PY30.0 mm rope body diameter
CTR38-3PY38.0 mm rope body diameter
CTR50-3PY50.0 mm rope body diameter
CTR60-3PY60.0 mm rope body diameter

05 — Where it is used

  • Gap filling and insulation for industrial kilns, high-temperature pipelines and pressure vessels
  • High-temperature sealing and insulation filling for furnace doors, valves, flanges and equipment joints
  • Supporting insulation for high-temperature furnace door curtains, flue lining insulation and sound absorption
  • Insulation protection and isolation for high-temperature engines and precision instruments

Service limits

  • Dry static high-temperature insulation sealing only. Prohibited for liquid immersion, high-pressure water erosion or strong acid and alkali corrosion.
  • No medium filtration function; cannot be used as a high-temperature filter material.
  • Not a professional cable fire protection wrapping product; not recommended for fire-resistant cable dedicated wrapping.
  • Not suitable for high-speed molten metal erosion, long-term molten liquid immersion or high-frequency severe friction and wear.
  • Insulation performance drops significantly when humid or water-immersed; prohibited for electrical insulation in humid environments.

Non-Reinforced Ceramic Fiber Twisted Rope

CTR

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