Description
Silicone Glass Sleeving – Vidaflex SD550
Silicone glass sleeving provides flexible electrical insulation for cables, conductors, winding leads and electrical equipment operating at elevated temperatures.
Engineering Supplies supplies Vidaflex SD550, which combines a continuous braided E-glass fibre sleeve with a smooth silicone elastomer coating.
This construction provides a combination of electrical insulation, mechanical protection and flexibility across a wide operating temperature range. In addition, the silicone coating helps contain the glass braid and creates a smooth surface that makes the sleeving easier to install over cables and conductors.
Vidaflex SD550 Features
Key features include:
- Braided E-glass fibre construction
- Silicone elastomer outer coating
- Class H / 180°C thermal rating
- Continuous operating range from -60°C to +180°C
- Short-term temperature exposure up to 250°C
- 4.0kV electrical strength
- Flexible construction
- Self-extinguishing material
- Suitable for electrical insulation
- Suitable for winding lead protection
- Available in multiple internal diameters
Vidaflex specifies SD550 as a high-temperature electrical insulation sleeve with good flexibility across a broad temperature range.
Available SRGS Sizes
Engineering Supplies stocks the following sizes:
| Part Number | Internal Diameter | Roll Length |
|---|---|---|
| SRGS02 | 2mm | 250m |
| SRGS04 | 4mm | 250m |
| SRGS06 | 6mm | 250m |
| SRGS08 | 8mm | 200m |
| SRGS10 | 10mm | 100m |
| SRGS12 | 12mm | 100m |
| SRGS15 | 15mm | 50m |
| SRGS20 | 20mm | 50m |
| SRGS25 | 25mm | 50m |
These sizes and roll lengths match your current Engineering Supplies catalogue.
Class H Electrical Insulation
The SD550 operates continuously up to 180°C, placing it within Class H electrical insulation applications.
Therefore, it suits equipment where conventional low-temperature cable sleeving may not provide sufficient thermal performance.
Typical applications include:
- Electric motors
- Alternators
- Transformers
- Winding lead-outs
- Heating equipment
- Electrical appliances
- Industrial machinery
- Control equipment
- Power supplies
- High-temperature wiring
Vidaflex specifically identifies applications such as Class H rotating electrical machines, winding lead-outs and joint insulation.
High-Temperature Cable Protection
The braided glass core provides mechanical strength, while the silicone coating maintains flexibility at both high and low temperatures.
As a result, the sleeve can protect insulated conductors where heat, movement or mechanical contact would make ordinary PVC sleeving unsuitable.
However, always select the sleeving size according to the actual cable or conductor outside diameter.
Silicone Glass Sleeving vs Braided Glass Sleeving
Engineering Supplies stocks several different high-temperature sleeving types.
Vidaflex SD550 uses a silicone elastomer coating and carries a continuous temperature rating of 180°C.
In comparison, our Braided Glass Sleeving uses the Vidaflex 111 system and suits higher-temperature applications where a different insulation construction is required.
For applications requiring a lower-temperature acrylic coating, see our Acrylic Glass Sleeving.
Therefore, the correct sleeving depends on the required temperature rating, insulation properties and application environment.
Other Electrical Sleeving
Browse our complete Electrical Sleeving range for:
- Silicone-coated glass sleeving
- Braided glass sleeving
- Acrylic glass sleeving
- PVC flexible tubing
- Expandable sleeving
You can also browse our wider Cable Accessories range for heat shrink, cable glands, wiring duct and related products.
Vidaflex Electrical Insulation Sleeving
VIDAFLEX is part of the KREMPEL range of electrical insulation and protective sleeving.
KREMPEL manufactures VIDAFLEX sleeving using glass or polyester fibre constructions with coatings such as silicone, acrylic and polyurethane depending on the application. The manufacturer identifies cable, conductor and winding-connection protection among the core applications for VIDAFLEX products.
For manufacturer information, visit the KREMPEL VIDAFLEX sleeving range.
Buy Silicone Glass Sleeving in Australia
Engineering Supplies stocks silicone glass sleeving in sizes from 2mm to 25mm internal diameter for electrical contractors, motor rewinders, OEMs, industrial maintenance teams and other electrical applications throughout Australia.
Choose the required internal diameter from the product options above.
For pricing, bulk quantities or assistance selecting the correct high-temperature sleeving, contact Engineering Supplies on (08) 9258 8444 or email sales@engsup.com.au.




