Our flame-retardant silicone foam seal strip is a high-performance soft sealing material specially developed for new energy battery boxes, energy storage cabinets, power distribution enclosures, electrical equipment, industrial control cabinets and high-fire-risk mechanical enclosures. It is manufactured from high-purity platinum-vulcanized silicone compound blended with halogen-free low-smoke flame retardant additives via continuous closed-cell calender foaming process. Fully compliant with UL9
Our flame-retardant silicone foam seal strip is a high-performance soft sealing material specially developed for new energy battery boxes, energy storage cabinets, power distribution enclosures, electrical equipment, industrial control cabinets and high-fire-risk mechanical enclosures. It is manufactured from high-purity platinum-vulcanized silicone compound blended with halogen-free low-smoke flame retardant additives via continuous closed-cell calender foaming process. Fully compliant with UL94 V-0, RoHS, REACH and IATF16949 standards, this foam strip integrates top-grade flame retardancy, IP67 waterproof & dustproof sealing, thermal insulation, shock absorption and electrical insulation. It fills assembly gaps tightly, blocks flame spread, isolates moisture and high-temperature heat, and provides long-term reliable all-round safety sealing protection for equipment shells.
Core Performance & Structural Advantages
With dense uniform closed-cell micropore structure, smooth flat surface, consistent thickness and ultra-high soft resilience, this foam seal strip fits seamlessly with cabinet flanges, box cover seams, ventilation gaps and mating surfaces. No foam powder shedding, no scratch or corrosion to metal/plastic shells. It overcomes the defects of ordinary foam strips such as easy combustion, molten dripping, poor compression recovery and rapid aging, with targeted fire-resistant sealing advantages:
- UL94 V-0 Halogen-Free Low-Smoke Flame Retardancy
Adopts eco-friendly inorganic halogen-free flame retardant formula, meets strict UL94 V-0 fire safety grade. It self-extinguishes rapidly within 3 seconds after leaving fire source, no molten drips, low smoke density and non-toxic fumes during combustion. It forms a stable fire barrier to cut off flame transmission along cabinet gaps, effectively delay battery thermal runaway and eliminate circuit ignition hazards.
- IP67 High-Grade Waterproof, Dustproof & Air-Tight Sealing
Compact fully closed-cell structure realizes complete isolation of rainwater, humid air, dust, sand and corrosive gas. After long-term compression fitting, it maintains tight gap filling, prevents short circuit, component rust and failure caused by moisture infiltration, and keeps internal equipment clean and dry for long-term unattended operation.
- High Compression Resilience & Long-Term Buffering
Compression set ≤7%, fast full rebound after long-term continuous extrusion without permanent collapse. It absorbs vibration and impact generated by equipment operation and transportation, relieves collision extrusion between cabinet and internal modules, protects battery cells and electrical components from mechanical damage.
- Wide Temperature Stability & Thermal Insulation
Continuous operating temperature: -60℃ ~ 230℃, instantaneous heat resistance up to 260℃. It remains flexible without embrittlement at low temperature, no softening or decomposition under long-term high-temperature baking. Low thermal conductivity structure isolates heat transfer, reduces internal temperature rise of equipment and avoids overheating failure.
- Superior Electrical Insulation Performance
Volume resistivity ≥10¹⁴Ω·cm, stable insulation capacity to isolate leakage current and electromagnetic interference. Effectively isolates high-voltage components, prevents short circuit risks inside power distribution and energy storage cabinets, fully meets high electrical safety standards.
- Excellent Weather Resistance & Long Service Life
Added with anti-UV, anti-ozone and high-temperature anti-aging additives, it resists outdoor sunlight, wind, rain and temperature cycle erosion. No hardening, yellowing or cracking after 8–10 years of use, matching the service life of energy storage and automotive equipment.
- Precision Customization & Easy Assembly
Customizable thickness, width, length, rectangular/special-shaped cross-section, single-sided adhesive or non-adhesive as required; dimensional tolerance controlled within ±0.05mm. Soft and easy to cut, paste and install, greatly improving production line sealing assembly efficiency.
- Eco-Friendly & Material Compatibility
Halogen-free, non-toxic, odorless and heavy metal-free, fully compliant with global environmental regulations. Chemically inert with aluminum alloy, steel, plastic and coating shells, no corrosion or adverse chemical reaction.
Typical Application Scenarios
- New Energy Vehicles: Flame retardant sealing gaskets for power battery box covers, module frame gaps and electrical connector flanges
- Energy Storage Systems: Fireproof sealing strips for container energy storage cabinets, commercial energy storage enclosures and BMS housing seams
- Power & Electrical Equipment: Insulation flame retardant sealing for high-voltage distribution boxes, inverter cabinets and charging pile shells
- Industrial Control Machinery: Dustproof fire-resistant gap filling for industrial control cabinets, test equipment and high-temperature machinery housings
- Outdoor Electronic Equipment: Weatherproof flame retardant sealing for outdoor communication cabinets and monitoring equipment enclosures
Precision Manufacturing & Strict Quality Control
Targeting dual requirements of flame retardant safety and long-term sealing stability for equipment cabinets, we implement full-process industrial-grade quality management and multi-dimensional batch testing:
- Special flame retardant raw material screening: Platinum-cured silicone matched with low-smoke halogen-free flame retardant additives; all raw materials pass flame retardancy, high-low temperature cycle and migration tests before production;
- Continuous closed-cell calendering foaming process: Ensures uniform pores, consistent thickness and stable long-term flame retardant sealing performance without attenuation;
- Full-item performance batch inspection: Each batch undergoes UL94 flame retardant test, waterproof sealing test, compression recovery test, insulation test and UV aging test, factory qualification rate up to 99.8%.
Precautions
- Select matched thickness according to cabinet assembly gap to ensure sufficient compression and tight sealing & flame retardant effect;
- Clean oil, dust and burrs on the bonding surface before installation to avoid gap leakage caused by uneven fitting;
- Do not stretch or tear the strip violently during construction to prevent damage to closed-cell structure and attenuation of flame retardant and sealing performance;
- Avoid long-term direct contact with strong acid, strong alkali and highly corrosive solvents to prevent material aging and performance decline;
- Store in dry, cool and ventilated warehouse, away from open flames and high-temperature heat sources, avoid heavy pressure stacking;
- Forbid long-term use beyond rated temperature range, otherwise flame retardant and sealing functions will fail;
- Regularly inspect the strip during equipment operation, replace timely if aging, cracking or permanent compression deformation occurs.
