Non-Fibrous Silicone Insulating Sleeve – Heat Resistant
This non-fibrous silicone insulating sleeve provides reliable electrical insulation for connection points, solder joints, cables and individual conductors. Its halogen-free silicone construction combines high-temperature resistance with flexibility at low temperatures, making it suitable for demanding electrical and industrial applications.
Key Highlights
Non-fibrous silicone construction · Dielectric strength of 20 kV/mm · Heat resistant up to +180°C · Short-time temperature up to +250°C · Flexible at low temperatures · Halogen-free · Non-corrosive combustion gases · Radiation resistant · Suitable for connection and solder-joint insulation · Multiple diameter and wall-thickness options · PFAS-free · RoHS compliant · Customized sizes and colours available
This heat-resistant silicone insulating sleeve is designed to insulate and protect electrical connections, solder joints, cables and conductors exposed to elevated temperatures.
Typical applications include:
- Insulation of electrical connection points
- Protection of soldered joints
- Covering individual wires and conductors
- Internal wiring of lamps and lighting equipment
- Heating appliances and heating elements
- Electrical plants and industrial equipment
- High-temperature wiring assemblies
- Applications requiring non-fibrous insulation
- Electrical installations requiring halogen-free materials
Material: Halogen-free, heat-resistant silicone elastomer
Design: Flexible, non-fibrous tubular insulating sleeve
Reinforcement: No textile or fiberglass reinforcement
Conductor: Not included; the product is an insulating sleeve intended to be drawn over cables, conductors, connections or solder joints
Available sizes: Multiple inside diameters and wall thicknesses
Colours: Standard and customized colours are available upon request
Customized inside diameters, wall thicknesses and colours can be manufactured according to application requirements.
Dielectric strength: 20 kV/mm
Temperature range for fixed applications: −40°C to +180°C
Temperature range for flexible applications: −25°C to +180°C
Maximum short-time temperature: +250°C
Radiation resistance: Up to 2 × 10⁷ cJ/kg
Halogen-free performance: According to IEC 60754-1 and VDE 0482-754-1
Corrosiveness of combustion gases: According to IEC 60754-2 and VDE 0482-754-2
Combustion gas characteristics: No development of corrosive combustion gases under the referenced test requirements
Chemical resistance: Dependent on the chemical medium, concentration, exposure temperature and exposure duration
Restricted substances: Designed in accordance with applicable EU RoHS requirements
PFAS: PFAS-free silicone construction
| Inside Diameter | Wall Thickness | Approx. Outer Diameter | Approx. Sleeve Weight |
| 1.0 mm | 0.40 mm | 1.8 mm | 2.2 kg/km |
| 1.5 mm | 0.40 mm | 2.3 mm | 3.0 kg/km |
| 1.5 mm | 0.60 mm | 2.7 mm | 5.7 kg/km |
| 2.0 mm | 0.40 mm | 2.8 mm | 3.8 kg/km |
| 2.5 mm | 0.40 mm | 3.3 mm | 4.7 kg/km |
| 3.0 mm | 0.40 mm | 3.8 mm | 5.5 kg/km |
| 4.0 mm | 0.50 mm | 5.0 mm | 8.9 kg/km |
| 4.0 mm | 0.75 mm | 5.5 mm | 14.2 kg/km |
| 6.0 mm | 0.90 mm | 7.8 mm | 23.5 kg/km |
| 7.0 mm | 0.90 mm | 8.8 mm | 27.0 kg/km |
| 8.0 mm | 1.00 mm | 10.0 mm | 34.0 kg/km |
| 10.0 mm | 1.00 mm | 12.0 mm | 44.0 kg/km |
Other inside diameters, wall thicknesses, outer diameters and colours are available upon request.
THE FACTORY
BEHIND EVERY METER
Founded in 2007 in Foshan, Guangdong, Hulk Electric has grown from a regional producer into a globally recognised manufacturer of customised industrial cable solutions. Our 10,000㎡ facility runs on Toyota Production System lean principles, operated by 150+ skilled professionals producing over 300,000 metres every month.
Every cable you see on this page — including the HK-TRVV series — is engineered, extruded, tested, and shipped from that single facility. No trading company sits between you and the extrusion line.
Source Factory
Direct manufacturer — no middlemen, no markups. You deal with the engineers who run the line.
Deep Customization
Conductor, shielding, jacket compound, colour coding, certification — built to your exact spec.
7-Day Sampling
Rapid samples for new specifications. 15-day lead time on standard production orders.
Global Compliance
35+ certifications covering UL, CE, TÜV, IEC, RoHS and REACH for every major market.
BEFORE YOU ORDER
For stocked configurations listed in the ordering table, MOQ is 100 metres per specification. Custom configurations — non-standard core counts, jacket colours, or special compounds — carry a 500 metre MOQ. Samples of 5–10 metres are available free of charge for qualification testing.
Use shielded (P or PP suffix) whenever the cable runs alongside servo drives, VFDs, or inverters, or when carrying encoder, sensor, or analogue signals. Unshielded is suitable for pure power distribution and simple on/off control lines. If in doubt, our engineering team can review your cabinet layout and advise — this is included with any quotation.
Yes. Send us the existing part number or a sample and we will produce a cross-reference specification with matching electrical, mechanical, and dimensional characteristics. Most cross-references are turned around within 3 working days, with a physical sample following within 7 days.
Standard shipments include the CE Declaration of Conformity, RoHS and REACH statements, and the batch test report. UL Recognition (UL 2464 / UL 20549) is available on request for North American projects — specify this at the quotation stage as it affects the material specification.
Standard configurations ship in 15 working days from order confirmation. Custom-engineered specifications typically require 20–25 working days, depending on compound availability. Rapid sampling for new specifications is 7 days. We will confirm the exact date in writing with your order acknowledgement.
SEND US YOUR
SPECIFICATION
Tell us your core count, cross-section, and application — our engineering team will confirm the right configuration and send pricing within one working day.
Your information is used only to prepare your quotation and is never shared with third parties.
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