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

Aluminium Foil Glass Fibre Sleeving is made of aluminium foil cloth cut to a certain width and then sewn with Velcro fasteners on both sides, which has good light and heat radiation properties, and the design of the fasteners facilitates simple and quick installation and removal.
Aluminium foil glass fibre sleeving can provide thermal protection for wires, cables and hoses in high temperature environments such as automotive, industrial, marine and other applications in high temperature sheet metal, molten metal or glass, open flames and engine exhaust equipment.

PART NO.	INNER DIAMETER/mm	WALL THICKNESS/mm	Length/m
ZDAF-VL-010	10	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-015	15	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-020	20	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-025	25	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-030	30	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-035	35	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-040	40	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-050	50	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-060	60	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-070	70	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-080	80	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-090	90	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-100	100	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-120	100	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-150	150	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-200	200	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-250	250	0.8/1.5/2.0/3.0	≧1
ZDAF-VL-300	300	0.8/1.5/2.0/3.0	≧1

Product Introduction

This aluminum foil fiberglass sleeve with Velcro closure is manufactured from aluminum foil fiberglass fabric of specified width, with hook-and-loop tape sewn along both longitudinal edges. The wrap-around design with buckle-type closure enables tool-free installation and removal. The sleeve adapts to equipment and pipelines of various shapes and sizes, providing versatility across multiple applications. The sleeve is widely used for thermal insulation protection of pipelines and cables in high-temperature environments including construction, automotive, industrial, and marine applications. It is also used for protective wrapping of chemical equipment such as oil pipelines and high-temperature steam pipelines.

Core Advantages

Wrap-Around Installation

The sleeve wraps around existing pipes and cables, eliminating the need to disconnect fittings or remove connectors during installation.

Velcro Closure System

Hook-and-loop tape sewn along both edges enables tool-free installation, removal, and reinstallation for maintenance access.

Dual-Layer Construction

Aluminum foil outer layer reflects radiant heat; glass fiber inner layer provides thermal insulation and mechanical protection.

Versatile Fitment

Adapts to various shapes and sizes, from straight pipes to elbows and irregular equipment contours.

Radiant Heat Reflection

Aluminum foil surface reflects up to 95% of incident radiant heat, reducing thermal load on protected components.

High-Temperature Resistance

Continuous operation up to 260°C (aluminum foil) with inner glass fiber providing additional thermal protection.

Product Features

Base material Aluminum foil laminated glass fiber fabric. Glass fiber thickness: 1.5-2.0mm. Aluminum foil thickness: 0.05-0.08mm.

Closure system Flame-retardant Velcro hook-and-loop tape sewn along both longitudinal edges using high-temperature sewing thread (Nomex or PTFE-coated).

Radiant heat reflectivity Aluminum foil surface reflects 90-95% of incident infrared radiation, reducing heat transfer to internal components.

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

Temperature rating (glass fiber) Inner glass fiber withstands up to 550°C continuous. Outer aluminum foil provides additional radiant heat reflection.

Available widths 50mm to 500mm flat width (covers pipes up to 160mm diameter). Standard lengths: 5m, 10m, 20m rolls.

Technical Specifications

Parameter	Specification
Continuous operating temperature (outer)	-50°C to +260°C
Continuous operating temperature (inner glass fiber)	-50°C to +550°C
Radiant heat reflectivity	90-95% (infrared spectrum)
Aluminum foil thickness	0.05-0.08mm
Glass fiber layer thickness	1.5-2.0mm
Velcro temperature rating	-40°C to +150°C continuous
Sewing thread material	Nomex or PTFE-coated fiber. Melting point >300°C
Flame resistance	UL VW-1, self-extinguishing within 5 seconds
Available flat widths	50mm, 75mm, 100mm, 125mm, 150mm, 200mm, 250mm, 300mm, 400mm, 500mm
Standard length	5m, 10m, 20m rolls
Color	Silver/aluminum (outer), off-white (inner at edges)

Application Scenarios

Construction equipment hydraulic lines

Automotive engine compartment wiring

Industrial furnace cable protection

Marine engine room piping

Oil pipeline insulation

High-temperature steam pipelines

Chemical equipment protective wrapping

Power plant cable trays

This aluminum foil fiberglass sleeve with Velcro closure is suitable for construction, automotive, industrial, marine, and chemical applications. In construction, the sleeve protects hydraulic hoses on heavy equipment from radiant heat. Automotive applications include engine compartment wiring protection and exhaust system heat shielding. Industrial uses include furnace cable protection, steam pipeline insulation, and high-temperature sensor cable management. Marine applications protect piping and wiring in engine rooms where space constraints make traditional sleeve installation difficult. In chemical and petrochemical facilities, the sleeve wraps oil pipelines and high-temperature steam lines, providing thermal protection and personnel burn prevention. The Velcro closure allows for easy retrofitting on existing systems without shutdown.

Common Questions and Solutions

What is the advantage of the Velcro closure over a tubular sleeve?

The Velcro closure allows installation on existing pipes and cables without disconnecting fittings or removing connectors. This is critical for retrofit applications, maintenance access, and temporary protection. The sleeve can be opened for inspection and reclosed without damaging the sleeve, reducing maintenance time and replacement costs.

What is the maximum temperature rating for the Velcro closure?

The flame-retardant Velcro has a continuous temperature rating of -40°C to +150°C. For applications exceeding 150°C continuous, the aluminum foil and glass fiber body still protect the underlying component, but the Velcro may degrade over time. For higher temperature applications, secure the sleeve with stainless steel wire in addition to the Velcro.

How do I select the correct width for my pipe or cable?

Measure the circumference of the component to be protected. The flat width of the sleeve should be approximately 1.5-2 times the component circumference to allow for overlap. For a pipe with 100mm circumference, select a 150-200mm flat width sleeve. The Velcro allows adjustment within a 30-50mm range.

Can the sleeve be used on irregular shapes such as elbows or valves?

Yes. The flexible wrap-around design allows the sleeve to conform to elbows, tees, valves, and other irregular shapes. For complex geometries, cut the sleeve to shape and use multiple overlapping sections. The Velcro closure allows the sleeve to be tensioned around contours for a secure fit.

Is the sleeve resistant to chemicals and oil?

The aluminum foil outer layer resists most oils, fuels, and industrial fluids. However, the Velcro closure may absorb oil over time, which can reduce adhesion. For oil-soaked environments, secure the sleeve with stainless steel tie wraps in addition to the Velcro. The sleeve should not be used for continuous immersion in chemicals.

How should the sleeve be cut to length?

Cut the sleeve to the required length using sharp scissors or a utility knife. After cutting, seal the cut edges with high-temperature aluminum tape to prevent fraying of the glass fiber and to maintain the reflective barrier. Ensure the Velcro extends the full length of the cut piece; cutting will separate the Velcro at the cut point.

Installation and Handling Considerations

Clean the surface of the pipe, hose, or cable before installation. Remove oil, grease, and debris to ensure the sleeve lies flat against the component.

Wrap the sleeve around the component with the aluminum foil outer layer facing outward. The reflective surface should be oriented toward the radiant heat source. The Velcro closure should be positioned away from direct heat when possible.

Press the Velcro closure firmly along its entire length to ensure full engagement. The sleeve should fit snugly but not be stretched tight. For vertical installations, secure both ends with stainless steel tie wraps to prevent sliding.

For applications with vibration, add stainless steel tie wraps at 20-30cm intervals to prevent the Velcro from working loose over time. Do not use plastic zip ties as they will melt at high temperatures.

For outdoor or weather-exposed applications, additional weather protection may be required as the aluminum foil may oxidize over time. Consider an additional outer cover or schedule periodic replacement.

Inspect the sleeve periodically for damage to the aluminum foil (tears, punctures, or oxidation) and for Velcro engagement. Replace the sleeve if the glass fiber is exposed, if the Velcro no longer holds securely, or if the aluminum foil is significantly damaged. The sleeve can be reused multiple times if removed for maintenance, but the Velcro may lose holding force after repeated thermal cycling.