4mm Fibreglass Sleeving – High Temperature, 1.5kV Rated, Silicone Coated

The 4mm Fibreglass Sleeving is a reliable solution for protecting electrical cabling in high-temperature environments. Designed with a durable fibreglass construction and coated with silicone, this sleeving provides excellent resistance to heat, moisture, and mechanical wear.

With a voltage rating of 1.5kV and a temperature resistance of up to 450°C, it is compatible with a wide range of industrial heating systems, appliances, and electrical installations. The silicone coating ensures the sleeving remains flexible while preventing water absorption, making it suitable for demanding conditions where durability and safety are critical.

Key Features

• Diameter: 4mm (other diameters available)

• Voltage Rating: 1.5kV insulation protection

• Temperature Resistance: Withstands continuous use up to 450°C

• Material: Braided fibreglass sleeving with silicone coating

• Protection: Excellent resistance against heat, abrasion, and moisture

• Flexibility: Easy to cut and install around cables and wires

• Colours Available: Multiple colour options for cable identification

Technical Specifications

Property	Specification
Internal Diameter	4mm (nominal)
Voltage Rating	1.5kV
Temperature Range	-60°C to +450°C
Construction	Braided fibreglass with silicone coating
Flame Resistance	High – maintains insulation under heat
Colours Available	Black, White, Red, and others
Application	Heating systems, industrial wiring, electrical insulation

Applications

• Electrical cable insulation in heating systems and industrial equipment

• Protective sleeving for high-temperature wiring in ovens, furnaces, and appliances

• Cable organisation in automotive, aerospace, and power systems

• Use in environments requiring moisture resistance and mechanical durability