Views: 0 Author: Site Editor Publish Time: 2026-01-20 Origin: Site
As electric vehicles (EVs), energy storage systems (ESS), and advanced electronics continue to grow rapidly, the demand for high-performance silicone foam materials has never been greater. Engineers and procurement teams must choose materials that offer reliable sealing, insulation, flame resistance and long-term durability in harsh environments.
Two frequently compared materials in this category are Rogers HT-800 and KOMPA KB103F.
While Rogers is a global leader, KB103F has emerged as a strong high-performance and cost-effective alternative, especially in EV and ESS applications.
This page provides a complete engineering-level comparison.
KB103F is a closed-cell, flame-retardant silicone foam engineered by KOMPA New Material for demanding industrial environments.
Key characteristics include:
Medium-firm density
Excellent compression set (<5%)
UL94 V-0 flame rating
Outstanding sealing performance
Custom thickness options: 0.8–25 mm
Resistant to water, dust, UV and chemicals
KB103F is widely used in EV battery packs, ESS cabinets, high-voltage insulation, power modules, industrial sealing and outdoor electronics.
Rogers HT-800 is one of the most recognized silicone foams globally, known for stable performance and long-term reliability.
Applications include:
Automotive gasketing
Rail, aerospace and transportation
HVAC and lighting
Outdoor enclosures
General industrial sealing
HT-800 is a well-established reference material in many industries.
Properties | Test method | ROGERS | Test method | KOMPA | Marks |
PHYSICAL | |||||
Color | Visual | Black/Grey/Red | Visual | Black/Grey/ Red/White | PASS |
Thickness (mm) | Internal | 0.79-12.70 | GB/T17794-2021 | 0.8-25 | PASS |
Density (g/cm3) | Internal | 0.352 | ASTM D 1056 | 0.37±0.03 | PASS |
Compression Force Deflection.(Kpa) | ASTM D 1056 | 67 | ASTM D 1056 | 60±10 | PASS |
Compression Set (%) | ASTM D 1056 | ＜5 | ASTM D 1056 | ＜5 | PASS |
Water Absorption (%) | Internal | ＜5 | ASTM D 570 | ＜5 | PASS |
Tensile Strength (kpa) | / | / | ASTM D 412 | ≥300 | |
Elongation at break (%≥) | / | / | ASTM D 412 | ≥80 | |
| FLAMMABILITY | |||||
Flame Resistance | UL94 | V-0 | UL94 | V-0 | PASS |
Flame Spread Index (Ls) | ASTM E 162 | ＜35 | ASTM E 162 | ＜25 | PASS |
Smoke Density (Ds) | ASTM E 662 | Flaming Mode, | ASTM E 662 | Flaming Mode, | PASS |
Burn Length | FMVSS 302 | ＜100 mm/min | FMVSS 302 | ＜100 mm/min | PASS |
THERMAL | |||||
Temperature Range(℃) | Internal | -55~200 | ASTM D 1056 | -60~200 | PASS |
Thermal Conductivity | ASTM C 518 | 0.076 | ASTM C 518 | 0.07 | PASS |
Low Temperature Flex | ASTM D 1056 | PASS | ASTM D 1056 | PASS | PASS |
Low Temperature Brittleness | ASTM D 746 | PASS | ASTM D 746 | PASS | PASS |
| ELECTRIC | |||||
Dielectric Strength (V/mil) | ASTM D 149 | 75 | ASTM D 149 | 120 | PASS |
Dielectric Constant 1 kHz | ASTM D 150 | 17 | ASTM D 150 | 17 | PASS |
Dielectric Factor 1 kHz | ASTM D 495 | 0.005 | ASTM D 495 | 0.005 | PASS |
Volume resistivity (Ω·cm) | ASTM D 257 | 1014 | ASTM D 257 | 1014 | PASS |
Both KB103F and HT-800 belong to the category of medium-firm silicone foams with similar density.
However, KB103F offers a much wider thickness range (0.8–25 mm) compared to HT-800 (0.79–12.7 mm). This gives engineers greater flexibility in designing:
Gap-filling structures
Battery pack sidewall buffers
ESS cabinet sealing
High-voltage barrier partitions
The closed-cell structure of KB103F provides excellent sealing and consistent mechanical behavior across the thickness range.
Both materials demonstrate similar compression force performance (around 60–67 kPa), indicating stable behavior under assembly loads.
A low compression set means the material can recover after long-term compression.
Both HT-800 and KB103F have <5% compression set, making them suitable for battery pack sealing, door gaskets and equipment enclosures.
KB103F provides ≥300 kPa tensile strength and ≥80% elongation, offering superior tear resistance and structural durability.
This advantage is valuable during:
Manual assembly
Bending and inserting foam strips
Die-cut gasket handling
Areas with mechanical stress
Both materials achieve UL94 V-0, but deeper testing shows KB103F performs significantly better:
HT-800: <35
KB103F: <25
HT-800: <100
KB103F: <50
Lower flame spread = slower fire propagation
Lower smoke density = safer for EV batteries and ESS systems
This makes KB103F safer for thermal-runaway related applications.
Both materials provide similar thermal performance:
HT-800: -55°C to +200°C
KB103F: -60°C to +200°C
Both pass low-temperature brittleness tests and high-temperature aging tests.
Thermal conductivity is nearly identical, ensuring good thermal insulation properties.
HT-800: 75 V/mil
KB103F: 120 V/mil
KB103F’s 60% higher dielectric strength offers better protection in high-voltage EV and ESS environments, such as:
Busbar insulation
Battery module HV partitions
Wiring harness pads
Power electronics cushioning
This is a significant advantage for new energy industries.
Both foams are closed-cell and provide excellent resistance to:
Water & moisture
Dust & particles
UV exposure
Ozone & chemicals
However, KB103F's lower compression set and more consistent rebound force allow it to maintain higher long-term sealing reliability, especially in outdoor applications.
EV battery pack sealing and protection
ESS cabinet door gaskets
High-voltage insulation barriers
Busbar and wiring harness protection
Industrial equipment vibration absorption
Outdoor electrical enclosures
General industrial sealing
HVAC & lighting components
Automotive gasketing
Mechanical cushioning
Overview: A dedicated silicone materials manufacturer focusing on EV, energy storage, and automotive industries.
Strengths:
Specializes in fire-resistant and thermal insulation silicone foam
Full range of thicknesses, densities, and customization (with or without adhesive backing)
ISO 9001 & IATF 16949 certified quality system
Fast delivery and flexible OEM/ODM support
silicone foam products
silicone foam gaske
Used as a sealing gasket around battery pack enclosures to prevent dust, moisture, and gas leakage.
Provides flame-retardant barriers and thermal insulation, helping slow fire propagation and protecting cells from thermal runaway.
Maintains long-term compression set resistance even under high temperatures and pressure cycles.
Energy storage cabinets (thermal & electrical insulation)
Acts as thermal barriers to reduce heat transfer between battery modules and cabinet structures.
Offers electrical insulation to prevent short circuits or arcing within compact spaces.
Supports environmental sealing against dust, moisture, and vibration.
Our Key Partners Include
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
Why KOMPA? Unlike global giants that serve broad markets, we focus on energy applications, making us the ideal partner for battery manufacturers, EV OEMs, and energy storage integrators.
KB103F Silicone Foam
https://www.kompsisiliconematerial.com/closed-cell-silicone-foam-kb103f.html
EV Battery Materials
https://www.kompsisiliconematerial.com/electric-battery-system.html
Energy Storage Materials
https://www.kompsisiliconematerial.com/photovoltaic-energy-storage.html
Contact KOMPA for Samples, Pricing or Technical Support
Our engineering team can help you choose the best silicone foam solution for your EV, ESS or industrial project.
Email: jenny@kompanewmaterials.com
Website: www.kompsisiliconematerial.com
