KB103F
KOMPA
Silicone material
0.5mm-30mm
0.37±0.03 (g/cm³)
500mm, 1000mm
China
ISO9001, ISO14001, ISO45001, IATF16949, EN45545-2, UL94-V0, NSF61, UL157-2007 Gaskets and Seals. CE, ROHS, PAHS, REACH
Product Description
Closed Cell Silicone Foam KB103F is an environmentally friendly foaming material made from addition-cured polyorganosiloxane, featuring a fine and uniform cell structure. Compared to foams made from traditional materials, this material offers advantages such as non-toxicity, environmental friendliness, excellent compression set resistance, superior creep resistance, good insulation, and flame retardancy. Additionally, it can withstand extreme temperatures, UV radiation, and ozone, while demonstrating excellent resistance to mechanical fatigue. These properties make it an ideal material for various high-performance applications requiring shock absorption, cushioning, sound insulation, protection, electrical insulation, and flame retardancy.
1. Low compression set and high creep resistance;
2. Excellent flame retardancy, low smoke density and toxicity, high oxygen index;
3. High electrical insulation;
4. Wide operating temperature range, capable of continuous operation from -60°C to 200°C;
5. Environmentally friendly with low VOC emissions.
KB103F Medium Silicone Foam TDS.pdf
| Properties | KB103F | Test Method |
Color | Black/Grey/Red/White | Visual |
| Thickness(mm) | 0.5mm-30mm | GB/T 17794-2021 |
Density (g/cm³) | 0.37±0.03 | ASTM D1056 |
Tensile Strength (kpa) | ≥300 | ASTM D412&GB/T 528-2009 |
| Elongation at break (%) | ≥80 | ASTM D412&GB/T 528-2009 |
| 25% Compression Force Deflection.(Kpa) | 60±10 | ASTM D1056 |
Compression Set (100℃/22hrs/50%) | ＜5 | ASTM D1056 |
| Water absorption (%) | ＜5 | ASTMD570 |
| Environmental testing | Pass | REACH/ROHS2.0 |
Temperature Range(℃) | -60-200 | ASTM D1056 |
Flame Resistance | Pass | UL94-V0/EN45545 |
Flame SpreadIndex (Ls) | ＜25 | ASTM E162 |
Smoke Density (Ds) | ＜50 | ASTM E662-2005 |
| Toxicity Emission Rating | Pass | SMP-800C |
Dielectric Strength (KV/mm) | ≥3.0 | ASTM 149 |
Volume resistivity (Ω·cm) | ≥1.0*1014 | ASTM D257&GB/T 1695-2005 |
| Thermal conductivity[W/(m.K)] | 0.07 | ASTM C518 |
| Standard width (mm) | 500mm/1000mm | GB/T 17794-2021 |
ROGERS HT800 AND KOMPA KB103F Silicone foam TDS.pdf
Both KB103F and Rogers HT-800 are trusted closed cell silicone foams in the industry—but if you're looking for a cost-effective, high-performing, and customizable alternative, KOMPA's KB103F is the smart choice.
1. Used for various shock absorption and cushioning purposes in assembly lines of aerospace, high-speed rail, automotive, energy storage, and other industries.
2. Used for various sealing applications in assembly lines of new energy vehicle PACKS, electrical cabinets, and other equipment.
3. Used for thermal insulation, flame retardancy, low VOC, sound insulation, electrical insulation, protection, and other functional requirements.
Excellent compression set & elasticity
UV, ozone, and aging resistant
Available in sheets, rolls, and custom die-cut parts
Our KB104F silicone foam is carefully packaged to ensure material integrity and protection during transportation and storage. We offer flexible packaging formats depending on the product dimensions and customer requirements.
Packed flat in protective PE film and placed in reinforced cardboard cartons.
Standard width: 500mm or 1000mm
Thickness: 0.5mm to 30mm
Rolled withprotective PE film and packed in heavy-duty cartons or fiber drums.
Standard width: 500mm or 1000mm
Length: up to 50 meters per roll, depending on thickness
Custom gaskets or pads are bagged and boxed with part number labeling. Bulk or tray packaging available upon request.
Moisture-proof and dust-proof wrapping
Labeling with product code, lot number, and specification details
Export-ready wooden pallets available for large volume shipments
Global shipping available via air, sea, or courier
Lead time: 7–10 working days based on order volume and customization
Express prototyping support available for urgent projects
When you purchase Closed Cell Silicone Foam KB103F, you receive:
High-performance closed cell silicone foam with excellent sealing, thermal insulation, and flame resistance (UL 94 V-0).
Available in sheets, rolls, or precision die-cut parts. Choose your ideal thickness, dimensions, and adhesive backing options.
Outstanding compression recovery, low water absorption, and long-term durability in extreme environments (–60°C to +200°C).
Neatly packed in rolls or cartons, with protective film, labeling, and export-ready pallets upon request.
Free samples available for testing. Our engineers provide fast support for design validation, custom specifications, and application matching.
Proprietary silicone formulation
Certified with UL, ROHS, REACH
Supply experience with Tier 1 EV clients
Fast prototyping & sample support
Global delivery and responsive service
Thickness: 0.5mm – 30mm
Formats: Sheet / Roll / Die-cut Gasket
Surface: Smooth / Fabric-coated
Color: Gray, Red, Black, Custom
Huawei – Global leader in communications, smart devices, and energy solutions
ZENERGY – Trusted supplier specializing in new energy battery systems
SAIC Motor – One of China’s largest and most innovative automotive manufacturers
Dongfeng Motor – Leading state-owned company in commercial and passenger vehicles
CRRC – World’s largest manufacturer of rail transit equipment and systems
CALB – Global innovator in lithium battery technology and energy storage solutions
Their trust speaks for our quality, reliability, and engineering excellence.
Choose KOMPA—where material innovation meets engineering precision.
1. Closed cell silicone foam is used in a wide range of industries for sealing, insulation, cushioning, and flame protection. Its closed-cell structure prevents the passage of air, water, and dust, making it ideal for environmental sealing in harsh conditions. Common applications include:
2. EV battery pack protection and sealing
3. Thermal insulation and fire protection in energy storage cabinets
4. Gasketing in automotive and aerospace systems
5. Shock and vibration dampening in electronic devices
6. Weatherproof seals for outdoor equipment and enclosures
Because of its excellent temperature resistance, low compression set, and flame retardant performance (UL 94 V-0), it is trusted in critical and high-safety applications.
The main difference between closed and open cell silicone foam lies in their internal structure and performance characteristics.
Features a compact structure where cells are completely enclosed, preventing air, water, and dust from passing through. This makes it ideal for sealing, insulation, and environmental protection in harsh conditions. It offers better water resistance, lower air permeability, and is commonly used in EV batteries, outdoor enclosures, and gaskets.
Has interconnected cells that allow air and moisture to flow through the material. It is softer, more compressible, and better for cushioning, sound absorption, and applications that require ventilation or breathability.
Closed cell = better sealing and protection
Open cell = better breathability and cushioning
Choosing the right type depends on your application's needs for moisture control, airflow, and mechanical performance.
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1. We support a wide range of custom shapes, sizes, thicknesses, and adhesive backing options, using precision die-cutting, CNC cutting, or waterjet processes. Whether you need gaskets, pads, thermal barriers, or sealing strips, we can produce components based on your CAD drawings or technical specifications.
2. Custom services include:
3. Tolerance-controlled cutting
4. Multi-layer lamination
5. PSA (Pressure Sensitive Adhesive) backing
6. Rapid prototyping and small batch support
Our team works closely with engineers and project managers across EV, automotive, energy, and electronics industries to deliver reliable, application-specific solutions.
KB103F is available in a range of thicknesses (typically 1mm–20mm). Choose the right thickness based on the gap size, compression level, and sealing performance required.
If your application involves high temperatures (up to 200°C) or fire safety standards like UL 94 V-0, KB103F is an excellent choice due to its stable performance under extreme conditions.
Evaluate the compression set performance for applications requiring long-term sealing under pressure. KB103F offers excellent recovery and low compression set.
KB103F is resistant to UV, ozone, and moisture, making it ideal for outdoor or rugged environments like EV battery packs and energy storage units.
Determine if you need die-cut gaskets, adhesive backing, or laminated layers. KB103F supports customization for better fit and functionality in complex assemblies.
Ensure KB103F meets your regulatory needs, such as RoHS, REACH, or automotive flame retardant standards.
If you're unsure, our technical team can help recommend the ideal density, thickness, and design configuration based on your product and industry needs.
Comparable performance in thermal stability, flame retardancy (UL 94 V-0),and compression setBetter flexibility on thickness, width, and custom formats
Faster lead times and local technical support from KOMPA's expert team
More competitive pricing without compromising quality
Trusted by leading EV, battery, and energy storage brands
