Silica Sleeve
Silica Sleeve SLN: Braided Silica Sleeve for Extreme Thermal Protection
Silica Sleeve SLN is not a simple glass…
Why choose Silica Sleeve SLN over conventional fiberglass?
- Out-of-category thermal resistance: While fiberglass begins to lose its mechanical properties at 500°C, SLN maintains its protection continuously up to 1,100°C, with resistance to thermal peaks up to 1,650°C.
- Zero smoke emissions: In the event of direct contact with a flame or an intense heat source, the sleeve does not release any toxic gases or halogens, ensuring operator safety in confined spaces.
- Resistance to slag and splashes: Its braid density prevents the embedding of molten metal beads. Splashes slide off the wall instead of piercing the insulation.
- Total chemical stability: It is resistant to acids (except hydrofluoric acid) and solvents, making it a durable solution for polluted industrial environments (Consult the technical data sheet).
Industry Focus: Managing Thermal Shock
The real enemy of cabling is not just the temperature, but the speed of its rise. Silica Sleeve SLN acts as a thermal buffer, smoothing out temperature curves to prevent the internal insulation of cables from suffering destructive thermal shock. This ensures increased longevity for your sensors and hydraulic hoses.
Where to install Silica Sleeve SLN?
Its robustness makes it the reference standard for applications where maintenance is complex and costly:
- Foundries & Steel Mills: Protection of fluid lines and electrical harnesses in the immediate vicinity of melting furnaces.
- Shipbuilding & Offshore: Thermal insulation of exhaust pipes and fire detection zones.
- Glass Industry: Protection of handling equipment on flat or hollow glass forming lines.
- Energy Sector: Isolation of critical cabling in thermal power plants and turbine zones.
- R&D: Engine test benches and simulation environments for atmospheric or thermal reentry.
Certifications and Technical Characteristics
Choosing Silica Sleeve SLN from Eurosleeving means relying on a component tested for the most severe uses:
- Fire Safety: Totally non-combustible inorganic material (A1).
- Environmental Compliance: Product free of asbestos and ceramic fibers, REACH and RoHS compliant.
- Thermal Performance: Continuous operating temperature from -54°C to +1,100°C.
- Braid Quality: Superior resistance to mechanical abrasion and common industrial chemical agents.
Product Sizes
| Part Number | Diameter Inside |
Expansion Minimum |
Expansion Maximum |
Wall Thickness |
Mini Spool |
Bulk Spool |
|---|---|---|---|---|---|---|
| SLN0.25 | 6,4 mm | 6,4 mm | 12,7 mm | 1,5 mm | 15,2 m | 30,5 m |
| SLN0.50 | 12,7 mm | 12,7 mm | 15,9 mm | 1,5 mm | 15,2 m | 30,5 m |
| SLN1.00 | 25,4 mm | 19,1 mm | 39,4 mm | 1,5 mm | 15,2 m | 30,5 m |
| SLN1.50 | 38,1 mm | 25,4 mm | 44,5 mm | 1,5 mm | 15,2 m | 30,5 m |
| SLN2.00 | 50,8 mm | 31,8 mm | 55,5 mm | 1,5 mm | 7,6 m | 30,5 m |
| SLN3.00 | 76,2 mm | 63,5 mm | 88,9 mm | 1,5 mm | 7,6 m | 30,5 m |
| SLN4.00 | 101,6 mm | 88,9 mm | 114,3 mm | 1,5 mm | 7,6 m | 30,5 m |
| SLN6.00 | 152,4 mm | 139,7 mm | 165,1 mm | 1,5 mm | 7,6 m | 30,5 m |
Consult the Technical Data Sheet
FAQ - Frequently Asked Questions about Silica Sleeve SLN
How to cut the sleeve without the silica fibers fraying? Although the SLN braid is very tight to limit this phenomenon, we recommend using sharp industrial scissors or robust shears. Unlike synthetic sleeves, it cannot be cut with a thermal knife (silica does not melt at low temperatures), but its ends can be secured with high-temperature adhesive tape or stainless steel cable ties.
Does Silica Sleeve SLN contain asbestos or ceramic fibers? Absolutely not. Operator health is a priority. SLN is composed exclusively of chemically treated amorphous silica to be harmless. It contains no trace of asbestos or refractory ceramic fibers classified as carcinogenic.
What is the real difference between this sleeve and a Fire Sleeve (silicone)? The Fire Sleeve (silicone-coated glass sleeve) is excellent for shedding welding splashes, but it is limited to a continuous temperature of about 260°C. Silica Sleeve SLN takes over for temperatures four times higher (1,100°C), where silicone would eventually carbonize and lose its insulating power.
Does the sleeve become brittle after prolonged exposure to over 1,000°C? Any mineral fiber undergoes a structural change at very high temperatures, but Silica Sleeve SLN is designed to maintain sufficient mechanical integrity. It remains flexible enough to absorb vibrations, provided it does not undergo extreme mechanical manipulation (repeated 180° bends) after a long period of intense heating.
A specific application? A particularly aggressive environment? Seek the expertise of our technicians to determine the diameter and mounting method perfectly suited to your infrastructure configuration.
Contact us or Request your Silica Sleeve SLN samples to test our silica technology's thermal resistance for yourself.