
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 Item | Technical Value | Remarks |
|---|---|---|
| Product color | White | Ceramic fiber base material supplemented with viscose fiber |
| Continuous use temperature | 1000°C | Stable operating temperature under static conditions; non-static conditions require separate discussion |
| Short-term tolerance temperature | 1260°C | Instantaneous emergency tolerance, not recommended for long-term continuous use |
| Fiber diameter | 3~5μm | |
| Aluminum oxide (Al₂O₃) content | 45~48% | |
| Iron(III) oxide (Fe₂O₃) content | 0.7~1.2% | |
| Calcium oxide & sodium chloride content | 0.43% | |
| Moisture content | ||
| Organic fiber content |
Note: The chemical composition is the composition of the ceramic fiber.
Product specifications
| Product Model | Rope Body Diameter (mm) |
|---|---|
| CTR6-3PY | 6.0 |
| CTR9-3PY | 9.0 |
| CTR12.5-3PY | 12.5 |
| CTR16-3PY | 16.0 |
| CTR19-3PY | 19.0 |
| CTR22-3PY | 22.0 |
| CTR25-3PY | 25.0 |
| CTR30-3PY | 30.0 |
| CTR38-3PY | 38.0 |
| CTR50-3PY | 50.0 |
| CTR60-3PY | 60.0 |
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 item | Value | Note |
|---|---|---|
| Colour | Ceramic fiber with viscose fiber | |
| Continuous | Static conditions | |
| Short excursion | Emergency only | |
| Fiber diameter | Spun staple | |
| Al2O3 | Base fiber chemistry | |
| Fe2O3 | Base fiber chemistry | |
| CaO and NaCl | Base fiber chemistry |
04 — Standard sizes
| Product code | Dimensions |
|---|---|
| CTR6-3PY | 6.0 mm rope body diameter |
| CTR9-3PY | 9.0 mm rope body diameter |
| CTR12.5-3PY | 12.5 mm rope body diameter |
| CTR16-3PY | 16.0 mm rope body diameter |
| CTR19-3PY | 19.0 mm rope body diameter |
| CTR22-3PY | 22.0 mm rope body diameter |
| CTR25-3PY | 25.0 mm rope body diameter |
| CTR30-3PY | 30.0 mm rope body diameter |
| CTR38-3PY | 38.0 mm rope body diameter |
| CTR50-3PY | 50.0 mm rope body diameter |
| CTR60-3PY | 60.0 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.
Related materials
View familyNon-Reinforced Ceramic Fiber Twisted Rope
CTR


