KB104F
KOMPA
Silicone material
0.5mm-30mm
0.4±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
Silicone Foam KB104F 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.
Low compression set and high creep resistance
Excellent flame retardancy, low smoke density and toxicity, high oxygen index
High electrical insulation
Wide operating temperature range, capable of continuous operation from -60°C to 200°C
Environmentally friendly with low VOC emissions
KB104F Firm Silicone Foam TDS.pdf
| Properties | KB104F | Test Method |
|---|---|---|
| Color | Black/Grey/Red/White | Visual |
| Thickness (mm) | 0.5mm-30mm | GB/T 17794-2021 |
| Density (g/cm³) | 0.4±0.03 | ASTM D1056 |
| Tensile Strength (kPa) | ≥350 | ASTM D412 & GB/T 528-2009 |
| Elongation at break (%) | ≥90 | ASTM D412 & GB/T 528-2009 |
| 25% Compression Force Deflection (kPa) | 90±25 | ASTM D1056 |
| Compression Set (100℃/22hrs/50%) | ＜5 | ASTM D1056 |
| Water absorption (%) | ＜5 | ASTM D570 |
| Environmental testing | Pass | REACH/RoHS2.0 |
| Temperature Range (℃) | -60-200 | ASTM D1056 |
| Flame Resistance | Pass | UL94-V0/EN45545 |
| Flame Spread Index (Ls) | ＜25 | ASTM E162 |
| Smoke Density (Ds) | ＜50 | ASTM E662-2005 |
| Toxicity Emission Rating | Pass | SMP-800C |
| Dielectric Strength (kV/mm) | ≥3.0 | ASTM D149 |
| 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 |
Used for various shock absorption and cushioning purposes in assembly lines of aerospace, high-speed rail, automotive, energy storage, and other industries
Used for various sealing applications in assembly lines of new energy vehicle PACKS, electrical cabinets, and other equipment
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 Silicone Foam KB104F 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 with protective 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 Silicone Foam KB104F, 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.
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:
EV battery pack protection and sealing
Thermal insulation and fire protection in energy storage cabinets
Gasketing in automotive and aerospace systems
Shock and vibration dampening in electronic devices
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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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.
Custom services include:
Tolerance-controlled cutting
Multi-layer lamination
PSA (Pressure Sensitive Adhesive) backing
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.
KB104F is available in a range of thicknesses (typically 0.5mm–30mm). 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, KB104F 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. KB104F offers excellent recovery and low compression set.
KB104F 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. KB104F supports customization for better fit and functionality in complex assemblies.
Ensure Silicone Foam KB104F 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 set
Better 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
