Foam Sealing Silicone Strip
As a leading Chinese exporter, Aobo Silicone rolls out high-performance Foam Sealing Silicone Strip featured with strong rebound performance, wide temperature adaptability and great corrosion resistance. Reasonably arranged internal closed and open cellular structures endow the strip with multi-functional effects including noise elimination, water proof sealing and vibration buffering.
Aobo Silicone Foam Sealing Silicone Strip Manufacturer offers high-performance sealing materials designed for precision industrial applications. Combining over two decades of experience in silicone rubber molding, we provides outstanding compression, thermal insulation, chemical stability, and long-lasting durability for automotive, medical, aerospace, and electronic industries.
Product Composition and Material Advantages
High-Purity Silicone Rubber Base
It is produced using high-purity silicone rubber through controlled chemical or physical foaming, creating a honeycomb-like microcellular structure with porosity up to 90%. This structure provides lightweight, elastic, and durable sealing performance.
● Density range: 0.25–0.85 g/cm³
● Cell diameter: 50–200 μm
● Hardness range: 8–70 Shore A
● Pore size control: 50–500 μm
Compression and Rebound Excellence
The internal closed-cell or open-cell design provides:
● 30%–50% higher compression rebound compared to standard rubber
● Weight reduction of over 20%
● Excellent sound insulation and vibration absorption Optimal foaming ratio (15%–25%) ensures structural strength without compromising flexibility.
Technical Parameters
Chemical Resistance | Resistant to acid-alkaline solutions with a pH value of 2 to 12, and free from cracking after 1,000 hours of exposure to an environment with an ozone concentration of 50 pphm. |
Flame Retardant Rating | UL94 V-0 (test specimen with a thickness of 1.6 mm), with a limiting oxygen index (LOI) ≥ 32%. |
Thermal Conductivity | 0.035–0.065 W/(m·K) (for the model with a density of 0.4 g/cm³), exhibiting better thermal insulation performance than traditional rubber materials. |
Parameter
Parameter Category | Technical Index |
Basic mat’l | Silicone rubber |
Foam Type | Open-cell foam Closed-cell foam |
Tensile Strength | 1.0–3.5 MPa |
Elongation | 100%–300% |
Compression set | ≤ 30%（150℃×22h, compression ratio 25%） |
Weatherability | UV resistance,Ozone resistance,acid-base,Salt Spray |
Flame Rating | UL 94 V-0 / V-2 |
Envi.Cert. | RoHS、REACH、FDA |
Color | Black,White,Grey, Color can be customized |
Cross section | Round,Square、D-shape,P-shape,Irregular shape can be customized |
Tol.Scope | Cross-section dim Tol.：±0.1 – ±0.5 mmLength Tol：±1 mm |
How to Identify High-Quality Sealing Silicone Strips?
Visual and Physical Checks
● Cross-section Observation: Uniform honeycomb pores indicate superior quality.
● Tensile Test: High-quality strips stretch up to 200% without breakage.
● Odor Test: Odorless material confirms premium manufacturing; pungent chemical smell signals inferior quality.
Key Performance Metrics
● Compression set ≤5%
● Rebound rate ≥85%
● Tensile strength 1.5–3.0 MPa
● Surface friction coefficient: 0.3–0.5
● Retains over 90% performance after 500-hour UV aging test
Open-Cell vs Closed-Cell Foam Sealing Silicone Strip
Feature | Open-Cell | Closed-Cell |
Structure | Pores interconnected | Independent sealed cavities |
Waterproof Function | None | Excellent |
Primary Use | Sound absorption, shock absorption, ventilation | Waterproof, airtight, dampproof |
Density | Lower | Higher |
Applications Across Industries
Automotive and New Energy Vehicles
● Shock absorption for precision components
● Battery pack thermal insulation and protection
● Dustproof and weather-resistant sealing
Electronics and Precision Devices
● Vibration damping and noise reduction
● Sealing for electronic enclosures
Medical and Food Industry
● Sterile sealing for medical equipment
● FDA-approved options suitable for direct food contact
Aerospace and High-Temperature Applications
● Thermal sealing for extreme environments
● Long-term dimensional stability from -60℃ to 250℃
Certifications and Compliance
Aobo Silicone Foam Sealing Silicone Strip meets global safety and environmental standards:
● RoHS & REACH Compliant – free of harmful substances
● FDA Certified – safe for food-grade use
● UL94 Flame Rating – V-0 certified for safety
● ISO9001, IATF16949, ISO13485 Certified – high-quality manufacturing system
Why Choose Aobo
Advanced Production Capabilities
● 32 vulcanization molding machines, 14 liquid injection molding machines
● Continuous extrusion vulcanization with real-time laser monitoring
● Dimensional tolerance controlled within ±0.05 mm
Global Experience and Service
● Serving customers in over 200 countries
● 24-hour rapid response to inquiries and quality issues
● Free mold maintenance up to 300,000 cycles
● Professional global logistics partners ensure timely delivery
Customization and Flexibility
● Color, cross-section, density, and hardness can be tailored
● Open-cell or closed-cell foam options available
● High-end solutions for precision sealing, shock absorption, thermal insulation, and waterproofing
How Can it Enhance Your Products?
● Superior cushioning and shock absorption
● Enhanced thermal insulation for critical components
● Reliable waterproof, dampproof, and airtight sealing
● Long-term performance under UV, ozone, acid, and salt spray exposure
● Reduced weight without compromising structural integrity
Aobo Silicone Foam Sealing Silicone Strip combines material innovation, precise production, and reliable performance. Trusted globally in automotive, aerospace, medical, and electronics, it delivers superior sealing, cushioning, and thermal protection. Choosing Aobo Silicone ensures high-quality, consistent, and tailored solutions for your industrial and commercial applications.
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Contact Info
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No. 4, Junfa 1st Road, Dongkeng Town, Dongguan City, Guangdong Province, China
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If you have any enquiry about quotation or cooperation, please feel free to email us at postmaster02@dgabgj.com or use the following inquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.
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