Wholesale High Temperature Aluminum Foil Fiberglass Sleeve Manufacturers, OEM/ODM Factory - Ningguo Zhongdian Insulation Material Co., Ltd

Aluminium Foil Fiberglass Sleeving is made of woven alkali-free glass fibre and covered with a layer of aluminium foil, which has heat-reflecting and heat-insulating properties. Tests have shown that aluminium foil glass fibre sleeving can reflect up to 90% of the high temperature on the surface of the pipe and protect the pipeline it covers. The aluminium foil will not detach from the glass fibre even at temperatures. Aluminium foil glass fibre tubing can provide good thermal protection for wires, cables and car engine hoses in hhigh-temperatureenvironments such as automotive, industrial and marine.

PART NO.	INNER DIAMETER/mm	THICKNESS/mm	Length/m
ZDAF-S-010	10	1.2	≧10
ZDAF-S-012	12	1.2	≧10
ZDAF-S-015	15	1.4	≧10
ZDAF-S-020	20	1.4	≧10
ZDAF-S-025	25	1.5	≧10
ZDAF-S-030	30	1.5	≧10
ZDAF-S-035	35	1.8	≧10
ZDAF-S-040	40	1.8	≧10
ZDAF-S-050	50	2.0	≧10
ZDAF-S-060	60	2.0	≧10
ZDAF-S-070	70	2.2	≧10
ZDAF-S-080	80	2.2	≧10
ZDAF-S-090	90	2.2	≧10
ZDAF-S-100	100	2.2	≧10

Product Introduction

This aluminum foil fiberglass sleeve consists of two layers. The inner layer is woven from glass fiber yarn, and the outer layer is covered with aluminum foil. This dual-layer construction provides high-temperature resistance, radiant heat reflectivity, abrasion resistance, and corrosion resistance. The aluminum foil outer layer reflects radiant heat, reducing the thermal radiation transfer to internal pipelines and components. The sleeve protects wires and electronic systems in automotive manufacturing, aerospace, energy industry, and communication technology applications. The design helps maintain system stability and extends equipment service life by reducing thermal stress on protected components.

Core Advantages

Dual-Layer Construction

Inner glass fiber layer provides thermal insulation and mechanical protection. Outer aluminum foil layer reflects radiant heat.

Radiant Heat Reflection

The aluminum foil surface reflects up to 95% of radiant heat, reducing heat transfer to internal hoses and cables.

High-Temperature Resistance

Continuous operation from -50°C to +260°C (aluminum foil outer) and 550°C (glass fiber inner layer).

Abrasion and Corrosion Resistance

The aluminum foil outer layer provides additional protection against mechanical abrasion and environmental corrosion.

Lightweight Construction

The sleeve adds minimal weight to protected systems while providing effective thermal protection.

Moisture and Oil Resistance

The aluminum foil outer layer resists moisture and oil absorption, maintaining performance in harsh environments.

Product Features

Inner layer material Alkali-free glass fiber (E-glass) woven into a tubular sleeve. Continuous temperature rating: 550°C. Thickness: 1.5-2.5mm.

Outer layer material Aluminum foil laminated or coated onto the glass fiber substrate. Thickness: 0.05-0.10mm. Reflectivity: >90% for infrared radiation.

Radiant heat reflectivity Aluminum foil surface reflects 90-95% of incident radiant heat, reducing thermal load on protected components.

Temperature rating (outer) Continuous: -50°C to +260°C. Aluminum foil maintains integrity up to 260°C before potential oxidation.

Temperature rating (inner) Glass fiber inner layer withstands up to 550°C continuous. Outer aluminum foil provides additional insulation.

Available inner diameters 6mm to 100mm. Standard lengths: 10m, 20m, 30m rolls. Custom diameters available.

Technical Specifications

Parameter	Specification
Continuous operating temperature (outer)	-50°C to +260°C
Continuous operating temperature (inner glass fiber)	-50°C to +550°C

Application Scenarios

Automotive engine compartment wiring

Aerospace and avionics thermal protection

Energy industry cable management

Communication technology equipment

Industrial furnace instrumentation cables

Exhaust system heat shielding

Hydraulic line radiant heat protection

Electronics enclosure thermal management

This aluminum foil fiberglass sleeve is suitable for applications where radiant heat is the primary thermal hazard. In automotive manufacturing, the sleeve protects wiring harnesses near exhaust manifolds, turbochargers, and catalytic converters. Aerospace applications include engine compartment wire protection and avionics thermal management. The energy industry uses the sleeve for cable protection in power generation facilities, including gas turbines and combined cycle plants. Communication technology applications include protecting fiber optic cables and electronic equipment in high-temperature environments. The reflective aluminum foil outer layer is particularly effective in applications where the sleeve is exposed to direct radiant heat sources, such as near furnaces, heaters, and high-intensity lighting.

Common Questions and Solutions

What is the primary benefit of the aluminum foil outer layer?

The aluminum foil outer layer reflects radiant heat, preventing it from reaching the inner glass fiber layer and the protected component. This is particularly important in applications where the sleeve is exposed to direct radiant heat sources such as exhaust manifolds, furnaces, or high-intensity lamps. The reflectivity reduces the thermal load by 90-95% compared to uncoated sleeves.

Can the sleeve be used in direct contact with exhaust pipes?

The sleeve can be used on exhaust pipes where the surface temperature does not exceed 260°C for continuous operation. For higher exhaust temperatures (up to 550°C), the inner glass fiber layer provides protection, but the aluminum foil outer layer may oxidize and discolor over time. For extreme exhaust applications (600°C+), consider a dedicated exhaust insulation sleeve without aluminum foil.

Does the aluminum foil layer affect flexibility?

The aluminum foil layer adds some stiffness compared to uncoated glass fiber sleeves, but the sleeve remains flexible enough for most routing applications. The minimum recommended bend radius is 4 times the sleeve diameter. For tight bends, consider a knit-style sleeve without foil or a foil with a thinner coating.

Is the sleeve resistant to moisture and oil?

Yes. The aluminum foil outer layer is impervious to moisture, oil, and most industrial fluids, preventing absorption into the glass fiber inner layer. This maintains the sleeve's thermal performance and prevents degradation from fluid exposure. The sleeve is suitable for engine compartments and industrial environments where oil mist is present.

How should the sleeve be cut and terminated?

Cut the sleeve using sharp scissors or a utility knife. After cutting, the cut ends may expose the inner glass fiber layer. Seal the ends with high-temperature aluminum tape or silicone to prevent fraying and to maintain the reflective barrier. For critical applications, use stainless steel tie wraps at both ends to secure the sleeve and prevent aluminum foil peeling.

Does the aluminum foil layer provide electrical conductivity?

The aluminum foil outer layer is electrically conductive. Do not use the sleeve as electrical insulation for live conductors. The sleeve is designed for thermal protection of cables that already have primary electrical insulation. If electrical isolation is required, ensure the underlying cable has proper insulation or use a non-conductive sleeve.

Installation and Handling Considerations

Wear gloves when handling the aluminum foil fiberglass sleeve to avoid sharp edges from the aluminum foil and glass fiber irritation. The aluminum foil edge can be sharp when cut.

Measure the outer diameter of the component to be protected. Select a sleeve with inner diameter 10-20% larger than the component diameter for easy installation without compressing the glass fiber layer.

Before installation, inspect the aluminum foil surface for creases, punctures, or peeling. Damaged foil reduces radiant heat reflectivity. Do not install sleeves with significant foil damage.

When routing the sleeve near sharp edges or abrasive surfaces, use edge protection or grommets to prevent the aluminum foil from tearing.

Secure the sleeve using stainless steel tie wraps or high-temperature tape. Do not use plastic zip ties as they will melt at temperatures above 85°C. Place tie wraps at 20-30cm intervals. The aluminum foil may crease under tie wraps, which is acceptable as long as the foil is not cut.

Inspect the sleeve periodically for aluminum foil oxidation, which appears as dulling or white powdery residue on the surface. Minor oxidation is acceptable but reduces reflectivity. Replace the sleeve if the foil is peeling, cracking, or if the glass fiber inner layer is exposed. For outdoor applications, the aluminum foil may oxidize faster; consider an additional outer cover for weather protection.