In new energy battery boxes, energy storage cabinets, new energy vehicle compartments, electrical control enclosures and high-temperature industrial equipment, cabinet doors, box flanges and panel gaps need long-term reliable sealing, dustproof and waterproof performance, while facing fire risks caused by short circuit and thermal runaway. Flame Retardant Silicone Foam Seal Strip is a closed-cell foamed sealing strip specially developed for high fire safety sealing scenarios. It integrates top-grade halogen-free flame retardant formula, soft compressible foam structure and excellent weather resistance, realizing triple functions of fire blocking, airtight sealing and vibration buffering. Tengye produces high-performance flame retardant silicone foam seal strips via integrated continuous extrusion foaming vulcanization process, providing long-term fire safety and stable sealing protection for all kinds of power equipment and industrial cabinets.
Halogen-Free Flame-Retardant Silicone Material & Closed-Cell Foaming Process
Our flame retardant silicone foam seal strip adopts imported high-purity flame retardant silicone raw material, compounded with halogen-free low-smoke environmental flame retardant additives, non-toxic, no volatile toxic precipitation, specially optimized for cabinet long-term closed high-temperature and fire-prone environments. We adopt one-step integrated closed-cell extrusion foaming molding technology to form uniform fine honeycomb pore structure inside the strip body, smooth compact upper and lower surfaces without powder shedding, layer separation and crack after long-term repeated opening and closing compression. Foaming density, hardness and cross-section shape can be adjusted according to customer cabinet gap and fire safety requirements to balance compressibility, sealing tightness and flame retardant efficiency.
This professional fire-safe silicone foam seal strip owns an ultra-wide operating temperature range of -60℃ to 230℃, maintaining stable softness, elasticity and complete flame retardant performance under long-term high-temperature baking, cold-hot alternating cycles and outdoor sunlight exposure, no hardening, shrinkage, elasticity loss or flame retardant failure after years of use. It has outstanding chemical inertness, resisting corrosion from battery electrolyte, engine oil, weak acid and alkaline industrial cleaning agents, as well as excellent UV and ozone aging resistance, adapting to indoor and outdoor long-term harsh working conditions. All products fully comply with RoHS 2.0, REACH, UL 94 V-0 highest flame retardant standard, complete SGS and Intertek third-party fire safety and sealing performance test reports can be provided for customer inspection and export certification.
Core Dual-Core Performance Advantages: Flame Retardancy & Reliable Sealing
Aiming at the dual pain points of ordinary sealing strips poor fire resistance and easy permanent deformation leading to air leakage, our flame retardant silicone foam seal strip realizes comprehensive performance upgrade, perfectly matching high-safety cabinet sealing scenarios:
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UL 94 V-0 Top-Grade Flame Retardancy: Self-extinguishes within 10 seconds after leaving open flame, no molten dripping, no dense toxic smoke release, effectively cuts off flame spread along cabinet gaps, prevents fire chain reaction caused by battery thermal runaway and electrical short circuit, greatly reducing equipment fire hazards.
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Airtight Waterproof & Dustproof Sealing Barrier: Soft compliant foam structure fits irregular flange gaps tightly, forms seamless closed sealing layer, reaches IP67-IP68 protection rating, effectively blocks rainwater, moisture, dust and fine particles from invading cabinet interior, avoids circuit short circuit, metal corrosion and component failure caused by damp environment.
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Wide High & Low Temperature Resistance: Stable long-term service at -60℃~230℃, adapts to low-temperature outdoor storage and continuous high-temperature heat accumulation inside battery cabinets, sealing and flame retardant performance will not decay after repeated cold-hot impact cycles.
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Low Compression Set & Long-Lasting Sealing Stability: Compression set ≤5%, no permanent deformation after long-term cabinet door clamping and repeated opening-closing, always maintains tight gap filling, will not produce air leakage and water seepage failure after years of operation.
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Vibration Absorption & Noise Reduction: Porous buffer foam absorbs vibration impact during vehicle driving and equipment operation, reduces cabinet metal collision noise, protects internal battery modules and electronic components from loose connection damage.
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Weather & Chemical Resistant, Non-Corrosive: Neutral chemically inert material, no chemical reaction with aluminum alloy, steel, plastic cabinet shells and circuit boards; strong anti-ultraviolet and anti-aging performance, stable comprehensive performance for 8-12 years under indoor and outdoor alternating temperature environments.
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Easy Assembly & High Compatibility: Optional single-sided flame retardant adhesive backing, convenient quick pasting on cabinet flanges; various cross-section shapes for matching different cabinet gap sizes, compatible with automatic assembly production lines.
Main Application Scenarios with High Fire Safety Sealing Requirements
Our flame retardant silicone foam seal strip is widely applied in all kinds of cabinet and panel sealing positions requiring simultaneous fire prevention, waterproof and dustproof performance, covering new energy, automobile, electrical power and industrial equipment industries:
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New Energy Storage Equipment: Flange sealing for household energy storage cabinets, industrial & commercial container energy storage boxes, battery module outer shells, isolate internal heat and block flame spread in case of thermal runaway.
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New Energy Vehicle Power Battery Boxes: Door cover sealing strip for passenger car, commercial vehicle and electric bus battery boxes, adapt to vehicle vibration and long-term alternating temperature harsh environment, ensure battery box waterproof and fire safety.
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Electrical & Control Cabinets: Cabinet door sealing for high-voltage distribution cabinets, inverter control boxes, communication base station power cabinets, prevent short circuit ignition of internal electrical components.
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Industrial High-Temperature Equipment Cabinets: Panel gap sealing for oven control cabinets, heating equipment enclosures, mechanical hydraulic control boxes, resist long-term internal high-temperature radiation and avoid fire risks.
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Special Outdoor Equipment: Weatherproof fire-resistant sealing for outdoor photovoltaic power cabinets, mobile energy storage equipment and charging pile control boxes, resist long-term rain, sunlight and damp erosion.
Custom OEM/ODM Service
We provide comprehensive personalized customization solutions to match diversified cabinet gap sizes, cross-section shapes and fire safety grade demands of different equipment, supporting small-batch R&D trial production and large-scale continuous mass delivery:
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Size & Cross-Section Customization: Customize strip width, thickness, length, cross-section shape (rectangle, trapezoid, D-type, E-type); customizable colors including black, gray, white, red per customer drawings or physical cabinet samples.
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Formula Performance Tuning: Adjust foaming density and hardness, upgrade ultra-high temperature resistance and flame retardant grade; optional anti-static treatment, enhanced oil resistance and surface wear-resistant upgrading.
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Post-Processing Customization: Support fixed-length cutting, coiled winding, single-sided double-sided flame retardant adhesive backing, surface polishing treatment to satisfy automatic assembly demands of cabinet production lines.
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Rapid Sampling & Stable Delivery: Deliver customized samples within 7-12 days for cabinet gap fitting and flame retardant sealing performance testing, equipped with complete quality traceability system to guarantee consistent batch quality and on-time delivery.
Precautions for Use
To fully retain the dual core performance of flame retardancy and airtight sealing, extend service life and guarantee long-term cabinet protection effect, please follow standardized operation specifications during installation, use and storage:
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Before installation, thoroughly wipe cabinet flange and door contact surfaces to keep dry, smooth and free of oil, dust and burr impurities, ensure full fitting and stable fireproof sealing effect.
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Avoid excessive stretching and sharp metal scratching during installation to prevent damage to internal closed-cell pore structure of strip body, resulting in attenuation of sealing and flame retardant performance.
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Reasonably control cabinet compression gap, keep compression ratio between 30%-50%, avoid long-term over-compression to prevent permanent deformation and loss of tight sealing and fire blocking functions.
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Store products in cool, dry and ventilated warehouse before installation, keep away from high-temperature heat sources, open flames and corrosive industrial chemicals to avoid premature aging and performance decline.
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Select corresponding thickness, density and UL flame retardant grade according to actual cabinet internal operating temperature and fire risk level to match required fire safety sealing standard.
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Regularly inspect the fitting condition of the sealing strip during equipment maintenance, timely replace aged, deformed and damaged strips to maintain cabinet waterproof, dustproof and flame retardant protection performance.
Strict Quality Control System
Adhering to the management tenet of "safety first, quality supreme", we implement full-process strict quality control for flame retardant silicone foam seal strips from raw material feeding to finished product delivery, to ensure every batch of products meets industrial high fire safety sealing standards:
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Raw Material Inspection: 100% full inspection of halogen-free flame retardant silicone raw materials, strictly test flame retardant grade, long-term heat resistance, environmental protection indicators and chemical stability, unqualified raw materials are prohibited from entering production lines.
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In-Process Monitoring: Real-time dynamic control of extrusion temperature, foaming ratio and dimensional tolerance, to guarantee uniform strip pores, smooth surfaces, consistent cross-section size and no defects such as bubbles, cracks and uneven thickness, stable flame retardant performance of each strip section.
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Finished Product Comprehensive Testing: Conduct UL flame retardant test, waterproof dustproof sealing test, long-term high-low temperature cycle aging test, compression rebound test and weather resistance test for each batch, issue complete fire safety and sealing certification documents and test reports for customer inspection.
Tengye: Your Trusted Flame-Retardant Silicone Seal Strip Partner
At Tengye, we focus on R&D, production and customized service of high-performance flame retardant silicone foam seal strips. Relying on mature continuous foaming extrusion technology, full-process strict fire safety testing and professional technical after-sales support, we supply airtight, fire-safe and long-lasting cabinet sealing solutions for global new energy, automobile, electrical power and industrial equipment manufacturers. We commit to solving customer core pain points including cabinet gap air leakage, equipment fire hazards and short sealing service life, and build long-term stable win-win cooperative relations. Contact us today for free customized samples, complete safety certification documents and exclusive mass production quotation!
