Silicone Fiberglass Fire-proof Tube SFT1500: Industrial Cable Wire Cover for Extreme Heat

The Silicone Fiberglass Fire-proof Tube SFT1500 is an industrial protective sleeve for cables, pipelines, and busbar assemblies in environments with sustained heat, open flame, and molten metal splash. Its construction — alkali-free fiberglass braid inside, iron oxide red silicone coating outside — delivers protection that most standard cable wire covers are not designed to provide. For procurement teams in steel mills, power substations, rail infrastructure, or EV battery systems, the SFT1500 offers a documented multi-parameter protection profile from a certified manufacturing source.

Core Technical Specifications

The Silicone Fiberglass Fire-proof Tube SFT1500 supports continuous operation from -70 to +260 degrees Celsius, with short-term thermal spike resistance up to 1650 degrees. This range addresses steel mill and smelting environments where molten metal splash is a recurring hazard that generic cable wire covers may not reliably resist. The SFT1500 carries an average dielectric strength of 7000V (minimum individual value 6000V), tested to EN 6059-501:2010 and ASTM D3755-20. Fire resistance is rated VW-1 per SAE J369. The sleeve also passes thermal conductivity testing to ASTM E1530 and thermal runaway testing at 1100 degrees for 20 continuous minutes.

Wall thickness runs from 1.8 mm at the smallest inner diameter up to 5.7 mm at the largest — substantially heavier than most standard insulation sleeves. When sourcing protective sleeving, labeled wall thickness and measured incoming values can diverge when acceptance criteria are not formalized in the purchase agreement. Including both nominal thickness and applicable tolerance as explicit procurement line items reduces ambiguity at incoming inspection.

Functional Advantages

Multi-Layer Protection in One Product

The Silicone Fiberglass Fire-proof Tube SFT1500 consolidates fireproofing, flame retardancy, thermal insulation, heat preservation, acid resistance, alkali resistance, and anti-aging performance in a single sleeve. For teams managing high-temperature cable wire cover requirements across multiple installation zones, this multi-function profile reduces SKU complexity. Rather than sourcing separate products for thermal and chemical protection, the SFT1500 covers both within one material family.

Molten Metal Splash and Thermal Shock Resistance

In steel mills, glass factories, and metal processing plants, molten splash and sudden thermal transients are routine. The SFT1500's dense fiberglass structure and silicone coating resist splash penetration and limit surface degradation under repeated exposure. Sleeve materials rated only for dry, steady-state heat show accelerated aging under combined thermal loading and chemical contamination. In high-temperature facility zones, visible color change in inadequately rated protection signals material degradation before functional failure occurs.

Chemical Stability and Broad Diameter Range

The SFT1500 resists ozone, chemical corrosion, and environmental aging. The product line covers inner diameters from 6.0 mm to 155.0 mm, allowing one product family to address harness routing and pipeline applications alike. For industrial buyers sourcing cable wire covers across mixed installation requirements, this coverage reduces the need to qualify multiple product families.

Key Application Scenarios

Steel, Metallurgy, and Rail Transit

In steel mills and smelting plants, cables and pipelines route through areas with sustained radiant heat and molten splash. The SFT1500's 260-degree continuous temperature limit and 1650-degree short-term spike resistance address the actual thermal profile of these operations. For rail transit and trackside facilities requiring VW-1 fire resistance and wide temperature coverage, the SFT1500 provides a specification-ready option with verified electrical and thermal test data.

New Energy Battery Systems and Copper Busbar Protection

Within EV battery packs, the Silicone Fiberglass Fire-proof Tube SFT1500 provides flame-retardant, thermally insulating protection for harnesses in tight assemblies. For high-current copper busbars in distribution cabinets, the SFT1500's 7000V average dielectric strength and heavy-wall construction offer a documented protection margin. Engineers specifying high-voltage systems increasingly treat dielectric strength — tested under pre-thermal-runaway conditions — as an equal criterion alongside mechanical and thermal properties. A common oversight is deferring flame retardancy confirmation until a supplier audit is already scheduled; confirming the applicable fire resistance rating at the specification stage avoids a reselection cycle.

Certifications and Documentation

The manufacturing facility holds ISO 9001, IATF 16949, ISO 14001, ISO 45001, and Military GJB9001C certifications. For procurement teams conducting supplier qualification or preparing technical packages, documented test report support reduces the qualification burden. If regional standards or customer-specific criteria apply beyond those listed, a targeted verification step before volume procurement is advisable.

Product Specifications — SFT1500 Sample Range

The Silicone Fiberglass Fire-proof Tube SFT1500 uses fiber-inside, silicone-outside construction with 20 m standard reel lengths. The table shows a representative selection; the full range covers 6.0 mm to 155.0 mm nominal inner diameter.

All performance values are typical. For complete specifications and test reports, contact your sales representative.

Procurement Guidance

When evaluating the Silicone Fiberglass Fire-proof Tube SFT1500, starting with the actual thermal environment — peak temperature, duration, and whether molten splash or chemical exposure co-occurs — provides a more reliable specification basis than defaulting to the highest-rated option available. The SFT1500 covers the majority of industrial high-temperature cable and pipeline protection requirements. For projects requiring fire resistance, dielectric performance, and multi-layer protection in a single cable wire cover solution, the SFT1500 supports direct incorporation into procurement documentation.