1.What is the maximum operating temperature of these fiberglass sleeves?

The NS-GF200RUB-D series is engineered for continuous thermal stability, maintaining its integrity from -40°C to +200°C in demanding industrial environments.


2. Does your fiberglass sleeve have UL Certification?

Yes, our silicone fiberglass sleeving is UL certified. It has passed the rigorous safety evaluations required by Underwriters Laboratories, ensuring it meets international standards for electrical and thermal safety.


3. What is the flame retardancy rating?

The fiberglass sleeve is rated UL94 HB. This indicates that the material has been tested for horizontal burn rates and provides a reliable baseline of flame resistance for electrical assemblies.


4. What breakdown voltage options are available for Volsun fiberglass sleeves?

We provide four specialized dielectric strength grades to match your safety needs: 1.5kV, 2.5kV, 4.0kV, and 7.0kV.


5. Does the coating crack during extreme cold installation?

No. Our fiberglass sleeves are tested at -40°C for 4 hours per GB/T 7113.2-2014. They remain flexible without any signs of cracking, peeling, or delamination in freezing conditions.


6. Is this fiberglass sleeving compliant with global environmental standards?

Yes, the entire series is fully RoHS and REACH compliant, ensuring that the materials are free from hazardous substances and safe for global export.


7. Why is alkali-free fiberglass used for the inner braid?

Alkali-free fiberglass offers superior mechanical strength and better moisture resistance compared to standard glass fibers, preventing the sleeve from stretching or degrading over time.


8. Can I request custom colors for complex wiring projects?

While we offer standard colors like black, white, red, blue, yellow, etc., we can manufacture custom colors on your request.


9. What is the tear strength of these industrial-grade glass fiber sleeves?

For sizes Φ4.0 and above, the tear strength is ≥ 50N/mm. This ensures the sleeve doesn't tear when pulled over sharp metal edges or rough conduits.


10. Does the silicone coating become tacky or displace over time?

No. Due to our advanced high-temperature curing process, the coating shows no displacement or sticking (tested per GB/T 7113.2-2014), even in high-humidity environments.


11. Which industries typically specify silicone fiberglass sleeve?

It is a standard choice in New Energy Vehicles, Rail Transit, Aerospace, and High-end Appliances where 200C heat resistance is a non-negotiable requirement.


12. How do I determine the correct size for my cable harness?

Measure your cable's outer diameter and choose a sleeve with a slightly larger Inner Diameter (ID). Our range spans from Φ2.0mm to Φ25.0mm with precise industrial tolerances.


13. What is the standard packaging for bulk orders?

Small diameters are typically supplied in 100m/roll, while larger sizes (Φ22.0+) are packaged in 30m or 50m/roll to ensure ease of handling during assembly.


14. How does this compare to standard heat shrink tubing?

Fiberglass sleeves offer higher continuous heat resistance 200C vs 125C and superior mechanical cushioning, making them better for heavy-duty abrasion protection.

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• SALES CONTACT: volsun2006@szvolsun.com