Our flame-retardant seal silicone foam for battery boxes is a high-performance, automotive-grade and battery-specific material, exclusively developed for new energy vehicle battery boxes, energy storage battery enclosures, and industrial battery cabinets. Manufactured from high-purity platinum-vulcanized silicone raw materials, blended with high-efficiency halogen-free flame retardants and anti-aging additives, it adopts precision closed-cell foaming and calendering molding technology. Targeted
Our flame-retardant seal silicone foam for battery boxes is a high-performance, automotive-grade and battery-specific material, exclusively developed for new energy vehicle battery boxes, energy storage battery enclosures, and industrial battery cabinets. Manufactured from high-purity platinum-vulcanized silicone raw materials, blended with high-efficiency halogen-free flame retardants and anti-aging additives, it adopts precision closed-cell foaming and calendering molding technology. Targeted at the strict flame retardancy, sealing, shock absorption, and long-term stability requirements of battery boxes, this product fully complies with UL94 V-0, RoHS, REACH, IATF16949, and global battery safety specifications. It effectively seals the gaps of battery box casings, lids, and connection ports, isolates external moisture, dust, and corrosive media, inhibits flame spread, cushions mechanical vibration and extrusion, and provides all-round safety protection for the stable operation of internal battery modules.
Core Performance & Structural Advantages
Featuring a uniform, dense closed-cell microstructure, flat surface, consistent thickness, and high resilience, this flame-retardant seal silicone foam fits perfectly with battery box casings, lid seams, cable outlets, and mating surfaces of connecting components. It is soft and non-abrasive, avoiding scratches or extrusion damage to battery box structures and internal modules, and specially optimized for the working characteristics of battery boxes, delivering targeted, durable performance advantages:
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UL94 V-0 High-Grade Flame Retardancy: Equipped with advanced halogen-free flame retardant formula, it complies with the strict UL94 V-0 flame retardant standard, featuring rapid self-extinguishing (≤3 seconds) without molten drips or toxic smoke emission during combustion. It effectively inhibits flame spread, delays thermal runaway of internal batteries, and forms a reliable fire barrier, maximizing the safety of battery boxes.
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IP67-IP68 Waterproof & Dustproof Sealing: The compact closed-cell structure forms a tight sealing barrier, reaching IP67-IP68 protection grade. It completely blocks the intrusion of rainwater, humid air, dust, sand, and road salt (for vehicle battery boxes), avoiding short circuits, electrolyte leakage, and component corrosion caused by external impurities, eliminating the core failure risk of battery boxes.
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High-Efficiency Shock Absorption & Vibration Damping: The high-resilience silicone material can absorb up to 85% of external vibration and impact energy, relieving extrusion and collision between battery boxes and internal modules during transportation, installation, and operation. With a compression set ≤7%, it rebounds rapidly after long-term compression without permanent deformation, maintaining stable buffering performance throughout the service life of battery boxes.
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Ultra-Wide Temperature Resistance & Anti-Aging: Adapts to extreme operating environments ranging from -60℃ to 220℃, remaining flexible without embrittlement at low temperatures and not softening, deforming, or releasing volatile substances at high temperatures. Infused with anti-UV and anti-ozone additives, it resists aging caused by long-term outdoor use and harsh conditions, avoiding hardening, cracking, and yellowing, ensuring stable performance for 8-10 years.
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Superior Electrical Insulation: With a volume resistivity ≥10¹⁴Ω·cm, it delivers excellent electrical insulation performance, effectively isolating current, preventing electric leakage, short circuits, and electromagnetic interference, fully meeting the high safety standards of battery box electrical components.
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Precision Customization & Easy Assembly: Thickness ranges from 0.5mm to 50mm, with customizable length, width, and special profiles via precision die-cutting based on battery box drawings. Dimensional tolerance is controlled within ±0.05mm, realizing a seamless fit with various battery box structures. The soft, non-stick texture enables quick positioning and assembly, boosting production line efficiency and reducing maintenance difficulty.
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Eco-Friendly & Excellent Compatibility: Halogen-free, non-toxic, odorless, and free of heavy metals, fully complying with RoHS and REACH environmental protection standards. It has good chemical compatibility with battery box casings (metal, plastic), internal modules, and circuit components, with no adverse chemical reactions, and will not affect the safety and service life of battery systems.
Typical Application Scenarios
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Sealing, flame retardant, and buffering for new energy vehicle battery box casings and lids
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Waterproof sealing and fire protection for energy storage battery enclosures and industrial battery cabinets
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Sealing and insulation for battery box cable outlets, ventilation ports, and connection interfaces
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Gap filling, shock absorption, and flame retardant protection between battery boxes and vehicle bodies/installation frames
Precision Manufacturing & Strict Quality Control
Aiming at the high safety and high stability requirements of battery boxes, we implement the IATF16949 automotive-grade quality management system and carry out full-process quality control and multi-round rigorous testing to ensure product consistency and reliability:
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Battery-Box-Specific Raw Material Screening: Select high-purity platinum-vulcanized silicone raw materials, matched with special halogen-free flame retardant, anti-aging, and insulating additives. All raw materials pass strict environmental protection, flame retardancy, and compatibility testing, ensuring adaptation to battery box working conditions.
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Precision Foaming & Molding Process: Adopt closed-cell precision foaming and high-precision calendering technology to ensure uniform cell distribution and consistent thickness. High-precision die-cutting equipment processes products with smooth edges, no burrs, and no degumming, avoiding damage to battery box components during assembly.
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Comprehensive Performance Testing: Each batch undergoes 20 strict tests, including flame retardancy test, waterproof/dustproof test, compression resilience test, high and low temperature cycle test, electrical insulation test, and dimensional accuracy test, with a factory qualification rate of 99.8%.
Precautions
1. Before installation, clean the contact surface of the battery box thoroughly to remove dust, oil stains, water stains, and burrs, ensuring a tight fit between the silicone foam and the contact surface, and avoiding gaps affecting sealing and flame retardant performance.
2. Do not stretch, bend, or cut the silicone foam forcibly during installation, so as not to damage the internal closed-cell structure and reduce its flame retardancy, sealing, and buffering effects.
3. Avoid long-term direct contact between the product and strong acid, strong alkali, and corrosive chemical solvents, to prevent material corrosion and performance degradation, especially in industrial battery box scenarios with special media.
4. Store the product in a dry, cool, and ventilated environment, away from direct sunlight, high-temperature heat sources, and open flames, and avoid heavy pressure stacking to prevent deformation before use; the recommended storage temperature is 5℃-30℃.
5. Select the appropriate thickness, hardness, and specification according to the actual gap size and working environment of the battery box, and do not use specifications that do not match the design requirements.
6. During the transportation and handling of battery boxes equipped with this silicone foam, avoid severe collision and excessive vibration to prevent displacement of the foam and failure of the sealing and flame retardant functions.
7. Regularly check the appearance and performance status of the silicone foam during the long-term operation of battery boxes, and replace it in time if there is obvious aging, cracking, or deformation.
