For new energy vehicle power battery packs, industrial energy storage cabinets, and portable battery equipment, the shell sealing system directly determines the safety, stability and service life of the entire battery module. Battery pack shell silicone sealing foam serves as a core protective component, integrating high-performance sealing, shock absorption, waterproofing and flame retardancy, specially engineered to fit battery pack shell assemblies. Tengye delivers premium battery pack shell silicone sealing foam—made of high-density foamed silicone and precision-molded—to block moisture, dust and vibration, resist extreme temperatures and electrolyte corrosion, and provide all-round protection for battery pack internal cores and circuits.
High-Performance Foamed Silicone Material: Built for Battery Safety Demands
Our battery pack shell silicone sealing foam is manufactured with imported high-purity raw silicone rubber, adopting closed-cell / open-cell foaming process to balance softness, resilience and sealing performance. We offer customized material formulations, including industrial-grade, automotive-grade and flame-retardant grade, all tailored to meet the strict safety and environmental requirements of the battery industry.
This specialized silicone foam features exceptional temperature resistance (-60℃ to 230℃), maintaining stable elasticity without hardening, cracking or softening under long-term high-temperature battery operation or extreme low-temperature environments. It boasts outstanding anti-aging and anti-corrosion properties, resisting battery electrolyte, automotive oils, acid-base substances, UV radiation and ozone erosion, ensuring long-term sealing stability. Moreover, it complies with RoHS 2.0, REACH and UL 94 V-0 flame retardant standards, non-toxic, halogen-free and low-smoke, fully meeting the safety specifications of new energy power batteries and energy storage systems, with third-party SGS/Intertek test reports available for verification.
Precision Molding & Structural Design: Perfect Fit for Battery Pack Shells
We combine professional foaming technology and precision molding craftsmanship to design sealing foam that perfectly adapts to diverse battery pack shell structures, covering irregular gaps, flange joints and wiring harness ports. Our technical team cooperates deeply with battery manufacturers to customize products for power battery packs, energy storage cabinets and industrial battery shells, ensuring seamless fitting and no dead-end sealing.
Key design highlights include: uniform foaming structure with consistent density and thickness, avoiding uneven stress and sealing failure; excellent compression resilience with low compression set (≤5% after long-term compression), retaining tight sealing even under long-term assembly pressure; soft and flexible texture that fits complex curved surfaces and irregular gaps of battery shells, easy to install without damaging the shell surface; customizable profiles including flat sheets, special-shaped die-cutting, grooved and edge-wrapping styles, with strict dimensional tolerance (±0.1mm) to match shell assembly clearances.
Core Performance Advantages: All-Round Protection for Battery Packs
Our battery pack shell silicone sealing foam breaks through the limitations of traditional gaskets and ordinary foam, delivering comprehensive performance to solve the core pain points of battery pack protection:
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High-Level Waterproof & Dustproof: Reaches IP67-IP68 protection rating, effectively blocking rainwater, moisture, dust and sediment from entering the battery pack, preventing battery short circuit, corrosion and performance degradation caused by water ingress.
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Ultra-High Flame Retardancy: Meets UL 94 V-0 flame retardant standard, self-extinguishing immediately after leaving the fire, no molten drips and no toxic gas release, greatly improving the fire safety of battery packs and reducing potential safety hazards.
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Strong Shock Absorption & Cushioning: The porous foamed structure absorbs vibration and impact during vehicle driving, equipment transportation and operation, reducing stress on battery shells and internal modules, preventing loose connections and structural damage.
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Long-Term Durability: Resists extreme temperatures, chemical corrosion and environmental aging, maintaining stable performance for 8-10 years, reducing replacement and maintenance frequency of battery pack sealing components.
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Easy Assembly & Compatibility: Lightweight and flexible, compatible with automated assembly and manual installation, suitable for aluminum alloy, plastic and steel battery pack shells, with no chemical corrosion to the shell surface.
Wide Application Scenarios in Battery Industry
Our battery pack shell silicone sealing foam is widely applied in various battery equipment with high protection demands, covering multiple fields of the new energy industry:
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New Energy Vehicle Power Batteries: Sealing for passenger car / commercial vehicle power battery shells, upper and lower cover flanges, module gaps and wiring harness ports, adapting to harsh vehicle-mounted vibration and temperature changing environments.
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Energy Storage Battery Cabinets: Sealing and shock absorption for household energy storage, industrial & commercial energy storage and large-scale power station battery cabinets, suitable for indoor and outdoor energy storage equipment.
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Industrial & Portable Batteries: Sealing protection for industrial power tool battery packs, military battery equipment and special-purpose battery shells, meeting high-standard protection needs.
Custom OEM/ODM Service: Tailored to Your Battery Pack Design
We provide full-chain customized services to match diversified battery pack shell structures and performance requirements, meeting personalized R&D and mass production needs:
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Specification & Shape Customization: Customize thickness (1mm-20mm), length, width, density and hardness; support die-cutting, molding and special-shaped processing according to 2D/3D drawings or samples.
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Performance Formula Tuning: Optimize flame retardancy, temperature resistance, waterproofing and resilience based on application scenarios; optional closed-cell/open-cell structure, self-adhesive backing and surface treatment.
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Rapid Prototyping: Deliver customized samples within 7-12 days for fitment and performance testing, with timely adjustments to meet assembly requirements.
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Mass Production Support: Meet small-batch prototype production and large-volume mass production, with strict quality control and batch traceability to ensure stable supply.
Strict Quality Control System
We implement a full-process quality control system to ensure each batch of battery pack shell silicone sealing foam meets industry safety and performance standards:
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Raw Material Inspection: 100% testing of raw silicone materials for purity, flame retardancy and temperature resistance before production.
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In-Process Monitoring: Real-time control of foaming, molding and cutting parameters to ensure uniform structure, accurate dimensions and no defects.
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Finished Product Testing: Conduct waterproof, flame retardant, compression resilience, temperature cycle and aging tests, issuing complete test reports for each batch.
Tengye: Your Reliable Partner for Battery Sealing Components
At Tengye, we adhere to the principle of "Quality First, Safety-Oriented", focusing on the R&D and production of high-performance silicone sealing products for the new energy battery industry. Our battery pack shell silicone sealing foam integrates advanced foaming technology and professional customization capabilities, providing reliable sealing protection for battery packs and escorting the safe operation of battery systems. Contact us today for customized solutions, free samples and exclusive quotations!
