Silicone-Coated Fiberglass Sleeving
Higher-temperature flexible sleeving for harness and components. Silicone-coated fiberglass sleeving runs hotter than acrylic and stays flexible, making it the choice for engine-bay and industrial harness. We supply it in ID and wall for the temperature and abrasion duty. Higher than acrylic-coated glass; we state the class from your continuous and peak temperature. Resin-impregnated glass sleeve
Higher-temperature flexible sleeving for harness and components. Silicone-coated fiberglass sleeving runs hotter than acrylic and stays flexible, making it the choice for engine-bay and industrial harness. We supply it in ID and wall for the temperature and abrasion duty. Higher than acrylic-coated glass; we state the class from your continuous and peak temperature. Resin-impregnated glass sleeve
Technical specifications
| Material | Fiberglass + silicone |
| Temperature | Higher class than acrylic |
| Flex | Flexible braid |
| Use | Hot harness, industrial |
💾 Datasheets & Test Reports
Download the technical data sheet for this product (PDF).
Information required for quotation
| Base tube | Approved material grade, ID, OD, wall and conditioning as per drawing |
| Datums | Drawing datum scheme and measurement reference |
| Key dimensions | Feature positions, depths, pitch and diameters reviewed before quotation |
| Thread / profile | Standard or custom profile, class, depth, engagement and gage method |
| Other features | Holes, slots, steps, chamfers, cuts and marking |
| Acceptance | Tolerances, sampling, gages, FAI and inspection report |
| Order | Prototype and production quantity, packaging and delivery target |
Applications by industry
- Motor, generator and transformer lead insulation sleeving
- High-temperature appliance and heating-element leads
- Welding cable and high-amp flex protection
- Industrial motor repair and rewind sleeve stock
- Electrical heater power-supply lead slewing
- Flexible continuous-duty 200 °C+ lead protection
Why silicone-coated fiberglass for this application
Silicone over glass braid holds up at continuous high temperature with good cut resistance and flexibility, the go-to for motor leads and heater cables that sit near hot bodies.
Confirm continuous vs short-time temp rating; silicone can abrade through against sharp edges — add a mechanical sleeve where chafing is heavy.
Standards: IEC 60684-3, UL 1441, UL 224 (grade dependent).
Feature and remaining-wall review
Cut-to-length; heat-sealed or taped ends. Not typically machined. Review feature depth, edge distance and remaining wall against critical geometries. Capability is confirmed on your drawing, not from a blanket tolerance.
Inspection and traceability
We state the control plan with you. Batch traceability links raw material lot to finished part.
- First-article inspection (FAI) per your plan
- In-process dimensional checks at every station
- Batch certificate of conformance (COA) supplied on request
- Lot traceability to incoming material certificate
- Dielectric strength and insulation resistance testing available on request
Related components
Silicone Resin Fiberglass Sleeve
Related insulation component from the WELLELE catalog.
Silicone-Coated Fire Sleeve
Related insulation component from the WELLELE catalog.
Acrylic Fiberglass Sleeving
Related insulation component from the WELLELE catalog.
Common questions
Is silicone UV resistant?
The fiberglass substrate is UV resistant; the silicone coating adds moisture and chemical resistance.
Can it be cut to length?
Yes — standard cut-to-length with heat-sealed or taped ends as required.
What standards apply?
ASTM D5611 (silicone sleeving), IEC 60228, UL 94 V-0.
RoHS and REACH compliance?
Yes. All standard grades comply with RoHS 2011/65/EU and REACH 1907/2006.
Temperature rating of silicone sleeve?
Yes. All standard grades comply with RoHS 2011/65/EU and REACH 1907/2006.
Engineering Guides & Selection Notes
Related technical articles that help specify this product.
Get pricing for Silicone-Coated Fiberglass Sleeving
Attach the drawing with annual volume. We check the material against your duty and tolerance, verify ID / OD / wall / features, and respond with manufacturability notes and pricing.