Wholesale High Temperature Ceramic Fiber Sleeve Manufacturers, OEM/ODM Factory - Ningguo Zhongdian Insulation Material Co., Ltd

Ceramic fibre casing mainly draws on the traditional textile production process, the aluminosilicate refractory fibres are spun into yarn, and glass fibre or heat-resistant steel wire is used as reinforcing material, using special textile technology and equipment, woven into ceramic fibre casing.
Ceramic fibre casing is lightweight, high temperature resistant, heat-insulating, acid and alkali resistant, non-toxic, and with high tensile strength and toughness. Can be used for a long time in a high temperature of 1000 ℃ working environment, ceramic fibre casing than glass fibre casing has a higher level of electrical insulation and high-temperature insulation, mainly used for insulation and protection of machinery. Including industrial motor start and instrumentation insulation, fireproof cable wrapping materials, high-temperature fireproof materials, hydraulic hoses and lines, pneumatic lines, wires high-temperature resistant cables and high-temperature tube packaging series products.

PART NO.	INNER DIAMETER/mm	THICKNESS/mm	WEIGHTIG/M)
ZDCF-S-020	20	3.0±0.5	20
ZDCF-S-025	25	3.0±0.5	20
ZDCF-S-030	30	3.0±0.5	20
ZDCF-S-035	35	3.0±0.5	20
ZDCF-S-040	40	3.0±0.5	20
ZDCF-S-045	45	3.0±0.5	20
ZDCF-S-050	50	3.0±0.5	20
ZDCF-S-055	55	3.0±0.5	20
ZDCF-S-060	60	3.0±0.5	20
ZDCF-S-065	65	3.0±0.5	20
ZDCF-S-070	70	3.0±0.5	20
ZDCF-S-075	75	3.0±0.5	20
ZDCF-S-080	80	3.0±0.5	20
ZDCF-S-085	85	3.0±0.5	20
ZDCF-S-090	90	3.0±0.5	20
ZDCF-S-100	100	3.0± 0.5	20

Product Introduction

This ceramic fiber sleeve is manufactured from high-purity ceramic fiber with aluminum silicate as the primary component. The sleeve is produced using specialized textile technology and equipment, reinforced with alkali-free glass fiber yarn or heat-resistant stainless steel wire. The ceramic fiber sleeve exhibits low density, high tensile strength, thermal insulation properties, heat retention, high-temperature resistance, open flame resistance, and molten metal splash resistance. The chemical properties remain stable under exposure to various chemicals. The sleeve maintains its structure at continuous operating temperatures up to 1000°C without deformation or melting. The sleeve is primarily used for insulation and protection of machinery including industrial motors, engines, instrument insulation, fireproof cable coatings, high-temperature fireproof materials, hydraulic hoses, pneumatic lines, wires, high-temperature resistant cables, and high-temperature pipe wrapping applications.

Core Advantages

High-Purity Ceramic Fiber Construction

Manufactured from aluminum silicate-based ceramic fiber with high purity, providing consistent thermal performance at extreme temperatures.

1000°C Continuous Operation

Maintains structural integrity at 1000°C continuous service temperature without deformation, melting, or thermal degradation.

Reinforced Construction

Reinforced with alkali-free glass fiber or heat-resistant stainless steel wire for enhanced tensile strength and dimensional stability.

Open Flame Resistance

The sleeve does not burn or support combustion. Maintains protection in direct open flame exposure conditions.

Chemical Stability

Resistant to most acids, alkalis, and organic solvents. Stable chemical properties under industrial chemical exposure.

Low Density with High Strength

Low material density reduces weight on supported components while maintaining high mechanical strength for industrial applications.

Product Features

Base material High-purity ceramic fiber (aluminum silicate). Continuous operating temperature: 1000°C. Short-term peak: up to 1260°C.

Reinforcement options Alkali-free glass fiber yarn (temperature rating: 550°C) or heat-resistant stainless steel wire (temperature rating: 1000°C+).

Melting point Approximately 1760°C. The sleeve maintains solid state up to this temperature.

Thermal conductivity 0.09-0.12 W/m·K at 500°C, providing effective thermal insulation at elevated temperatures.

Density 2.5-3.0 g/cm³ (varies by reinforcement type). Low density compared to metal-based thermal protection materials.

Available inner diameters 10mm to 150mm. Standard lengths: 5m, 10m, 15m, 20m rolls. Custom diameters available.

Technical Specifications

Parameter	Specification
Continuous operating temperature	-100°C to +1000°C (ceramic fiber), up to 550°C for glass reinforced, 1000°C+ for steel reinforced
Short-term peak temperature	Up to 1260°C (less than 30 minutes)
Melting point	Approximately 1760°C
Aluminum silicate content (Al₂O₃ + SiO₂)	> 98%
Fiber diameter	3-5 micrometers (ceramic fiber)
Thermal conductivity	0.09-0.12 W/m·K at 500°C

Tensile strength (glass reinforced)> 600 N per 25mm widthTensile strength (steel reinforced)> 1200 N per 25mm widthLinear shrinkage (1000°C, 24 hrs)< 3%Available inner diameters10mm, 12mm, 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 80mm, 100mm, 120mm, 150mmStandard length5m, 10m, 15m, 20m rollsColorWhite (natural ceramic fiber)

Application Scenarios

Industrial motor and engine insulation

Instrument and equipment thermal protection

Fireproof cable coating materials

High-temperature fireproof materials

Hydraulic hose and line protection

Pneumatic line thermal insulation

High-temperature resistant cable wrapping

High-temperature pipe packaging systems

This ceramic fiber sleeve is suitable for industrial applications requiring thermal protection at temperatures up to 1000°C. Applications include insulating industrial motors and engines to reduce heat transfer to surrounding components, protecting instruments and equipment from radiant heat exposure, and providing fireproof coating for electrical cables in high-temperature zones. The sleeve is also used for hydraulic hose protection in foundries and steel mills, pneumatic line insulation in glass manufacturing, high-temperature resistant cable wrapping in furnace areas, and high-temperature pipe packaging systems in chemical processing plants. The reinforced construction provides mechanical strength for demanding industrial environments.

Common Questions and Solutions

What is the difference between glass reinforced and steel reinforced ceramic fiber sleeves?

Glass reinforced sleeves use alkali-free glass fiber as a reinforcing strand, providing good tensile strength with a continuous temperature rating of 550°C for the reinforcement. Steel reinforced sleeves use heat-resistant stainless steel wire, maintaining full reinforcement strength at 1000°C. Steel reinforced sleeves are recommended for applications above 550°C or where mechanical abrasion is a concern.

Does the sleeve produce respirable fiber dust during handling?

Ceramic fibers are classified as refractory ceramic fibers (RCF). Use engineering controls such as local exhaust ventilation when cutting or installing the sleeve. Wear approved respirators (N95 or higher) when handling. After installation, the sleeve releases minimal airborne fibers. Coated versions are available to encapsulate fibers.

Can the sleeve be used in direct contact with molten metal?

The sleeve can withstand brief splashes of molten metal but is not designed for continuous immersion. The ceramic fiber resists wetting by most molten metals for short contact durations. For continuous molten metal contact applications, use specialized molten metal filtration sleeves with higher density and specific coatings.

How does the sleeve perform after thermal cycling?

Ceramic fiber sleeves withstand multiple thermal cycles between ambient temperature and 1000°C with minimal degradation. Linear shrinkage remains below 3% after 24 hours at 1000°C. The sleeve may become more brittle after extensive thermal cycling. Replace sleeves that show visible fiber breakage or loss of structural integrity.

What is the chemical resistance of the ceramic fiber sleeve?

The sleeve resists most acids (except hydrofluoric and phosphoric acids), alkalis, and organic solvents. Chemical stability is maintained up to 1000°C. For exposure to hydrofluoric acid or concentrated phosphoric acid, use protective coatings or alternative materials.

How should the sleeve be cut to length?

Cut the sleeve using sharp scissors or a utility knife. For steel reinforced sleeves, use tin snips or heavy-duty scissors capable of cutting stainless steel wire. Seal cut ends with high-temperature ceramic adhesive or wrap with high-temperature tape to prevent fraying of glass fiber or wire protrusions.

Installation and Handling Considerations

Wear appropriate personal protective equipment including gloves, long sleeves, safety glasses, and an N95 respirator when handling ceramic fiber sleeves. Wash hands after handling before eating or drinking.

Measure the outer diameter of the component to be protected. Select a sleeve with inner diameter 15-20% larger than the component diameter to allow for easy installation without compressing the ceramic fiber structure.

For steel reinforced sleeves, use stainless steel tie wraps for secure attachment. Standard tie wraps may not hold the steel wire reinforcement securely. Space securing bands every 30-40cm along the sleeve length.

Avoid bending the sleeve to a radius less than 4 times the sleeve diameter. Ceramic fiber has lower flexibility than glass fiber and may crack under tight bends. Use multiple shorter sections for applications requiring tight radius turns.

Do not install the sleeve over wet or oil-soaked surfaces. Trapped moisture or oil may vaporize and cause internal pressure within the sleeve. Clean and dry the underlying component before installation.

Inspect the sleeve periodically for visible damage such as fraying, cuts, or steel wire protrusion (on reinforced versions). Replace the sleeve if the ceramic fiber core is exposed or if reinforcement wires have broken. For applications with frequent maintenance access, consider using wrap-style sleeves with hook-and-loop closures for easier removal and reinstallation.