Our silicone seal foam for lithium batteries is a high-performance customized elastomeric material, exclusively developed for lithium-ion power batteries, energy storage batteries and consumer lithium batteries. Adopting high-purity platinum-vulcanized silicone raw materials matched with environmentally friendly flame retardant additives, it is produced through precision closed-cell foaming and calendering molding processes. Targeted at the strict sealing, shock absorption, flame retardancy, ins
Our silicone seal foam for lithium batteries is a high-performance customized elastomeric material, exclusively developed for lithium-ion power batteries, energy storage batteries and consumer lithium batteries. Adopting high-purity platinum-vulcanized silicone raw materials matched with environmentally friendly flame retardant additives, it is produced through precision closed-cell foaming and calendering molding processes. Targeted at the strict sealing, shock absorption, flame retardancy, insulation and environmental adaptability requirements of lithium battery applications, this product fully complies with UL94 V-0, RoHS, REACH, IATF16949 and lithium battery safety specifications. It effectively isolates external moisture, dust and corrosive media, cushions mechanical vibrations and impacts, stabilizes the internal operating environment of lithium batteries, and provides all-round safety protection for the long-term stable and efficient operation of lithium battery systems.
Core Performance & Structural Advantages
With uniform closed-cell microstructure, smooth surface, consistent thickness and high resilience, this silicone seal foam fits tightly with lithium battery shells, module gaps, electrode interfaces and mating surfaces, without causing damage or abrasion to battery cells and internal components. It overcomes the defects of traditional foam materials in lithium battery scenarios, and presents targeted and outstanding performance advantages:
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High-Density Waterproof & Dustproof Sealing: The compact closed-cell structure endows the product with IP67-IP68 high-level protection grade, which can completely block the intrusion of rainwater, humid air, dust and sand particles. It effectively avoids short circuits of lithium battery protection boards, electrolyte leakage and battery corrosion caused by moisture penetration, eliminating the core potential safety hazard of lithium battery failure due to poor sealing.
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High-Efficiency Shock Absorption & Buffering: The high-resilience silicone material can absorb more than 85% of external vibration and impact energy, relieving the extrusion and collision between lithium battery cells and modules during transportation, vehicle driving and equipment operation. With a compression set ≤7%, it can rebound quickly after long-term compression without permanent deformation, maintaining stable buffering performance throughout the service life of lithium batteries.
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Excellent Wide-Temperature Resistance & Anti-Aging: It adapts to extreme operating environments ranging from -60℃ to 220℃, remaining flexible and non-brittle at low temperatures, and not softening, deforming or decomposing at high temperatures. Added with anti-UV and anti-aging additives, it has strong resistance to ozone, ultraviolet radiation and chemical corrosion, and can maintain stable performance for 8-10 years, matching the service life of lithium batteries.
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UL94 V-0 Flame Retardancy & High Insulation: Complying with the strict UL94 V-0 flame retardant standard, it has rapid self-extinguishing property, no molten drips and low toxic gas emission during combustion, which can effectively inhibit flame spread and delay thermal runaway of lithium batteries. With volume resistivity ≥10¹⁴Ω·cm, it has superior electrical insulation performance, preventing electric leakage and short circuits, fully meeting the safety standards of lithium battery systems.
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Precision Customization & Easy Assembly: The thickness ranges from 0.5mm to 50mm, and the length, width and special profiles can be customized by die-cutting according to customer drawings. Dimensional tolerance is controlled within ±0.05mm, realizing a perfect fit with various lithium battery structures. The soft and non-stick surface is convenient for positioning and installation, which greatly improves the assembly efficiency of lithium battery production lines and reduces labor costs.
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Eco-Friendly & Battery Compatibility: It is halogen-free, non-toxic, odorless and free of heavy metals, complying with RoHS and REACH environmental protection standards. It has good compatibility with lithium battery materials, no chemical reaction or corrosion, and will not affect the performance and service life of lithium batteries.
Precision Manufacturing & Strict Quality Control
Aiming at the high-safety and high-stability requirements of lithium battery components, we implement full-process quality control and multi-round rigorous testing to ensure the reliability and stability of each batch of products:
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Lithium Battery-Specific Raw Material Screening: Select high-purity platinum-vulcanized silicone raw materials, equipped with special flame retardant, anti-aging and insulating additives. All raw materials undergo heavy metal detection, thermal stability test and lithium battery material compatibility test to meet environmental protection and lithium battery safety standards.
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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 is used for processing, with smooth edges, no burrs and no degumming, avoiding damage to lithium batteries during assembly.
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Comprehensive Performance Testing: Each batch undergoes 18 strict tests, including waterproof and dustproof test, compression resilience test, high and low temperature cycle test, flame retardant test, electrical insulation test, aging resistance test and dimensional accuracy test, with a factory qualification rate of 99.8%.
Main Application Scenarios
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Sealing, gap filling and buffering of power lithium battery modules and battery pack shells
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Shock absorption, insulation and fire protection of energy storage lithium battery cabinets and industrial lithium batteries
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Waterproof sealing and anti-collision protection of consumer lithium battery shells and interfaces
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Insulation and buffering of lithium battery management system (BMS) shells and electrical connectors
Customized Solutions & Service Support
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Personalized Customization: Customize thickness, hardness, shape, size and performance parameters (flame retardancy, temperature resistance) according to lithium battery structure and assembly requirements; support anti-static, high-temperature resistant and enhanced sealing upgrades.
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Fast Sample & Bulk Delivery: Provide customized samples with complete test reports within 5-7 working days; monthly production capacity of 45 tons ensures bulk delivery within 7-12 working days, meeting the supply needs of large lithium battery manufacturers.
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Compliance & Technical Assistance: Provide full set of certification documents (UL, RoHS, REACH, IATF16949) and offer on-site assembly guidance and material matching testing to help customers pass lithium battery safety audits smoothly.
