| Customization: | Available |
|---|---|
| Material: | Organic Silicone |
| Application: | Household, Medical, Industrial, Agricultural |
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Dachuangkehua is a leading manufacturer of high-performance silicone foam and sponge sealing strips, specializing in durable, flexible, and weather-resistant sealing solutions. Our products are engineered to deliver superior compression recovery, thermal stability, and long-lasting performance across a wide range of applications-from home insulation and automotive sealing to industrial enclosures and electronics protection.
FOAMED SILICONE STRIP - KEY FEATURES
Made from high-quality silicone foam, offering excellent elasticity and long-lasting compression recovery.
Closed-cell structure prevents water, dust, and air infiltration, ensuring a reliable seal.
Withstands -60°C to +200°C, making it ideal for both freezing and high-heat environments.
Maintains flexibility and sealing performance in harsh weather conditions.
Provides airtight, watertight, and dustproof sealing for doors, windows, HVAC systems, and industrial enclosures.
Enhances thermal insulation and noise reduction in residential and commercial applications.
UV-resistant, ozone-resistant, and weatherproof for outdoor use.
Resists oils, acids, and other chemicals, ensuring longevity in industrial settings.
Available in self-adhesive (PSA-backed) or non-adhesive versions for quick installation.
Can be cut to custom widths, lengths, or shapes to fit specific requirements.
Optional multi-layer lamination for specialized applications.
Low toxicity, CFC-free, and compliant with environmental and safety standards.
Flame-retardant options available for fire-sensitive applications.
Home & Construction: Door/window seals, insulation strips, and weatherproofing.
Automotive: Sealing for hoods, trunks, and electrical components.
Industrial: Gaskets for machinery, electrical enclosures, and HVAC systems.
Electronics: Protective cushioning and dustproof sealing for devices.
Dachuangkehua's foam silicone strips combine durability, flexibility, and high performance, making them a top choice for sealing solutions across industries.
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3.Foamed Silicone Strip - Technical ParametersSilicone foam strip is a strip material with a foam structure made of silicone as the main raw material. It is soft and elastic, and can adapt to a variety of different usage scenarios and deformation requirements. At the same time, it has good high and low temperature resistance and can maintain stable performance in a wide temperature range. Its excellent sealing performance can effectively prevent the intrusion of dust, moisture, etc. In addition, silicone foam strip is also non-toxic, odorless, environmentally friendly and safe. It is a common material for industry and life with excellent performance.
| product name | Silicone foam strips |
| Material | Silicone |
| Color | white/red(Color can be customized) |
| size | customizable |
| MOQ | 100 metres |
| Processing | Extrusion |
| features | High temperature resistance, environmental protection, insulation, compression resistance, strong resilience, etc. |
| application scenarios | Electrical appliances, furniture equipment, toys, medical equipment, lighting, machinery, automobile industry, etc. |
Base Materials: High-purity silicone rubber (liquid or solid form)
Foaming Agents: Chemical blowing agents (e.g., hydrazine derivatives, etc) or physical gases (e.g., nitrogen, CO)
Additives: Curing agents (typically platinum-based), stabilizers, flame retardants, colorants, antistatic agents
Key Consideration: Ensure all raw materials meet relevant regulatory standards (e.g., RoHS, FDA, REACH).
Determine required density, hardness, elasticity, thermal and chemical resistance
Conduct lab-scale trials to optimize:
Foaming ratio
Cell size and structure (open vs closed cell)
Cure time and temperature
Color and surface texture
Tip: Maintain a formulation database for traceability and future improvement.
Use precise mixing ratios (A/B components for LSR or additives for HTV silicone)
Equipment: Double planetary mixers, internal mixers, or two-component metering machines
Ensure degassing to remove air bubbles before molding
Control Points:
Viscosity checks
Mixing homogeneity
Temperature control during mixing
Molding Techniques:
Compression molding: Common for sheets and slabs
Injection molding: For precise parts or high-volume production
Foaming Activation:
Thermal activation (e.g., heat triggers foaming agent)
Controlled gas injection (for consistent cell structure)
Curing Temperature: 120-180°C typical, depending on formulation
Time: 5-20 minutes based on thickness and product geometry
Additional heat treatment (e.g., 200°C for 2-4 hours) to remove volatiles and improve performance
Especially important for medical- or food-grade products
CNC, waterjet, die-cutting, or laser cutting based on shape and application
Lamination of adhesive backings or surface films if needed
Implement QC protocols at each stage:
Physical Properties: Hardness, density, tensile strength, elongation
Thermal Properties: Thermal conductivity, heat resistance
Surface & Structural: Bubble uniformity, closed/open-cell ratio
Dimensional Tolerances: Thickness, width, surface flatness
Certifications: Consider ISO 9001, ISO 13485 (medical), or IATF 16949 (automotive) depending on market
Use non-contaminating packaging materials
Label each batch with:
Lot number
Date of manufacture
Material specifications
Store in cool, dry areas, away from UV and moisture
Maintain detailed records of:
Formulations and batch recipes
Production logs
QC test results
Compliance certificates
Customer feedback or non-conformance reports
Regular calibration of machines
Implement a preventive maintenance schedule
Conduct training programs for technicians and operators
Use ERP/MES systems for inventory and process tracking
Monitor production KPIs (yield rate, scrap rate, cycle time, downtime)
Foamed Silicone Production - Quality Control Key Points| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Silicone base quality | Viscosity, purity, batch uniformity | Material CoA, viscosity meter |
| Foaming agent quality | Activation temperature, decomposition profile | DSC/TGA analysis |
| Additives | Functionality (curing agent, color, antistatic, etc.) | Visual, functional check, TDS review |
| Storage conditions | Proper labeling, shelf life, contamination-free | Warehouse audit |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Mixing uniformity | Homogeneity of compound | Visual check, small test mold |
| Degassing efficiency | Air bubble removal | Vacuum check, visual bubble count |
| Batch consistency | Color, viscosity, reactivity | Rheometer, rotational viscometer |
| Temperature control | Maintain ideal mix temp (esp. for LSR) | Digital thermometer |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Mold temperature | Consistent curing/foaming activation | Thermocouples, infrared sensors |
| Foaming uniformity | Consistent bubble size & distribution | Cross-section inspection |
| Cell structure | Closed-cell or open-cell confirmation | Microscopic or dye-penetration test |
| Curing completeness | Ensure full vulcanization | Solvent rub test, tensile strength check |
| Dimensional accuracy | Part dimensions, thickness uniformity | Vernier calipers, laser profile gauge |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Hardness | Shore A (typ. 16-20 for foamed silicone) | Shore A durometer (ASTM D2240) |
| Density | Confirm correct foaming level | Gravimetric method (ASTM D792) |
| Tensile strength | Tear resistance and stretch durability | Universal testing machine (ASTM D412) |
| Elongation | % elongation at break | Tensile test (ASTM D412) |
| Compression set | Permanent deformation after compression | ASTM D395 |
| Recovery rate | Bounce-back rate after deformation | Compression recovery test |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| UV resistance | Surface discoloration or degradation | UV chamber exposure (ASTM G154) |
| Water absorption | Measure weight increase after submersion | ASTM D570 |
| Chemical resistance | Resistance to oils, solvents, acids | Soak test in target chemical environment |
| Flame resistance | Self-extinguishing or not | UL94 or ASTM D635 (if applicable) |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Surface texture | Grid or smooth pattern quality | Visual / tactile inspection |
| Defects | Cracks, pinholes, inclusions | Visual inspection under light |
| Color uniformity | Consistent coloring across batch | Visual + colorimeter (optional) |
| Checkpoint | What to Check | Method / Standard |
|---|---|---|
| Traceability | Batch number, production date, operator log | Labeling + system records |
| Label accuracy | Specs, warning, certification labels | Checklist-based inspection |
| Packaging integrity | Damage, contamination, sealing | Drop test, vibration test (if needed) |
| Certifications | RoHS, REACH, FDA, etc. compliance | Third-party testing reports / CoC |
SPC (Statistical Process Control) charts
FMEA (Failure Mode and Effects Analysis)
Control Plans
First Article Inspection (FAI)
Process Capability Index (Cp, Cpk) monitoring
Internal Audits & ISO 9001/ISO 13485 compliance
| Material Name | Specification | unit | quantity | Packing details | Packing size(m) | Weight(KG) | ||||
| Integer Box | End box | Single box weight | Number of boxes | Trunk weight | total | |||||
| Upper cover sealing strip | 2096mm*788mm*5T | PCS | 392 | 6 boxes*60+32+spare parts 2 | 400*350*300 | 15.08 | 6 | 8.86 | 99.34 | |
| Front panel sealing strip | 788mm*311.86mm*5T | PCS | 392 | 200+192+Spare Parts 2 | 520*430*425 | 12.02 | 1 | 11.72 | 23.74 | |
| BMU panel sealing strip | 297mm*164mm*5T | PCS | 784 | 3 boxes*240+64+spare parts 3 | 520*430*425 | 400*350*300 | 7.02 | 3 | 2.46 | 23.52 |
| Fuse panel sealing strip | 137mm*79mm*5T | PCS | 392 | 392+Spare Parts 2 | 400*350*300 | 4.8 | 1 | 0 | 4.8 | |
Doors/Windows - Weatherproofing, noise reduction, and thermal insulation.
HVAC Systems - Sealing ductwork to prevent air leaks and improve energy efficiency.
Roofing & Wall Gaps - Waterproofing and draft protection.
Vehicle Doors/Trunks - Dustproof, waterproof, and vibration-dampening seals.
Engine Compartments - Heat-resistant gaskets for cables and components.
Electric Vehicles (EVs) - Battery enclosure sealing for moisture and dust protection.
Control Panels - Dust and moisture sealing for industrial enclosures.
LED Lighting - Heat dissipation and waterproofing for outdoor fixtures.
Consumer Electronics - Cushioning and sealing for sensitive devices.
Pump/Valve Gaskets - Chemical-resistant sealing for pipelines.
CNC Equipment - Anti-vibration and noise reduction in heavy machinery.
Food Processing - FDA-compliant strips for hygienic sealing.
Medical Devices - Sealing for sterilizable equipment (silicone is biocompatible).
Cleanrooms - Contamination control with dust-tight seals.
Solar Panels - UV-resistant sealing for junction boxes.
Wind Turbines - Weatherproofing for electrical components.
The DC800 series from Dacchuang Kehua New Materials Co., Ltd. is a high-performance foamed silicone material engineered for demanding industrial applications. Known for its lightweight composition, exceptional elasticity, and resistance to extreme temperatures, the DC800 series is widely utilized across electronics, automotive, medical, and industrial sectors. Its performance is validated by multiple internationally recognized certifications, underscoring its quality and reliability.
Standard: ASTM D1056-20
Test Protocol: 1000 thermal cycles (-55°C to 125°C), 50% compression
Results:
DC800-015: 1.1%
DC800-020: 1.3%
DC800-025: 1.6%
DC800-030: 2.3%
DC800-035: 3.1%
DC800-042: 3.4%
DC800-045: 4.2%
DC800-050: 3.9%
DC800-055: 4.0%
Certification Body: SGS
Highlights: Demonstrates outstanding long-term resilience and thermal stability across the full series.
Standard: GB/T 1695-2005
Results:
DC800-035: 3.0 kV/mm
DC800-042: 3.1 kV/mm
DC800-045: 3.1 kV/mm
Certification Body: SGS
Highlights: Ensures excellent insulation properties for high-voltage and sensitive electronic applications.
RoHS: Fully compliant with EU Directive 2011/65/EU and its amendment (EU) 2015/863; all restricted substances within regulatory thresholds.
REACH: No SVHCs (Substances of Very High Concern) detected.
Halogen-Free: Non-detectable levels of fluorine (F), chlorine (Cl), bromine (Br), and iodine (I).
Certification Body: SGS
Highlights: Environmentally friendly and non-toxic; suitable for applications requiring strict material safety.
Standard: ASTM D1056-14
Test Protocol: 180° bend at -55°C for 24 hours
Results: No visible cracking or deformation
Highlights: Maintains flexibility and integrity in extremely low temperatures, ideal for cold-environment applications.
Broad Temperature Resistance
Operational range: -55°C to 125°C
Maintains stable performance across 1000 thermal cycles
Reliable Mechanical Strength
Compression set ≤ 4.2% across all variants
Resilient with minimal long-term fatigue
Superior Electrical Insulation
Dielectric strength ≥ 3.0 kV/mm
Optimized for sensitive electronic insulation needs
Full Environmental Certification
Certified RoHS, REACH, and halogen-free
Suitable for medical, consumer, and food-grade applications
Customizable & Versatile Product Line
Available in grades from DC800-015 to DC800-055
Customizable in thickness, hardness, and functional attributes
Electronics: Shock-absorbing pads, EMI shielding seals
Automotive: Weather seals, vibration dampening components
Medical Devices: Eco-safe materials for sensitive applications
Industrial Equipment: Durable gaskets and sealing systems
All certifications are issued by SGS, a globally recognized third-party testing body.
Traceable test reports include:
Compression Set: SUIN21080062XXMR_CN
Dielectric Strength: SHIN210805363XMR_CN
Environmental Compliance: SHAEC2116203002/4002
With a robust foundation of international certifications and tested performance metrics, Dacchuang Kehua's DC800 foamed silicone series is an ideal material choice for high-reliability and safety-critical applications. We remain committed to delivering innovative, environmentally conscious, and high-performance silicone solutions.
Innovating Silicone Solutions for a Sustainable Future
Hangzhou Dachuang Kehua is a national high-tech enterprise specializing in the R&D, production, and sales of high-performance silicone materials. Headquartered in Qingshanhu Science and Technology City, Hangzhou-a key hub in China's National Science and Technology Innovation Corridor-we combine cutting-edge research, advanced manufacturing, and industry expertise to deliver innovative silicone solutions for global industries.
Silicone Rubber & Foam Sheets
Silicone Tubes & Strips
Oil Seals & Custom Rubber Components
New Energy Vehicles (NEV) & EV Batteries
Energy Storage Systems (ESS) & Solar (PV)
5G Communications & Electronics
Construction & Industrial Machinery
Aerospace, Medical, and Consumer Goods
15+ Years of R&D Expertise - Proprietary formulations and advanced production processes.
DC800 Series Liquid Foamed Silicone - No external foaming agents, eco-friendly, superior flame retardancy (UL94 V-0), and IP68 sealing.
Automotive-Grade Materials - Compliant with IATF16949 for EV/ESS applications.
Quality Systems: ISO9001, IATF16949
Global Compliance: UL/CUL UL157, RoHS 2.0, REACH, SGS
Tailored density, hardness, and structure (open/closed-cell).
Die-cutting, laminating, and adhesive backing services.
| Product Series | Key Features | Applications |
|---|---|---|
| DC800 Foamed Silicone | Low/medium/high density, -55°C to 200°C, IP68 sealing | EV battery cushioning, 5G EMI shielding |
| DC900 Rigid Foam | Structural support, high compression resistance | Energy storage, industrial gaskets |
| DC10 Thermal Pads | High thermal conductivity, lightweight | Battery cooling, electronics heat dissipation |
| DC400 Fireproof Silicone | Ceramicizes at high temps, thermal runaway protection | ESS fire barriers, aerospace |
| DC600 Silicone-PTFE | Chemical/corrosion resistant | Medical, chemical processing |
30+ Performance Tests: Tensile strength, thermal aging, flame retardancy, salt spray.
Automated Production: Precision mixing, vulcanization, cutting for consistent quality.
Joint Labs with Research Institutes: Accelerating material innovation.
We partner with global industry leaders, including:
CATL, BYD (EV batteries)
Huawei (5G infrastructure)
Top Energy Storage & Solar Manufacturers
High-Tech R&D - Continuous innovation in silicone materials.
End-to-End Solutions - From raw material to finished product.
Reliable Quality - Strict QC, traceable production.
Global Compliance - Meets EU, US, and automotive standards.
Contact Us for tailored silicone solutions!
With the mission of "Empowering Industrial Upgrades Through Material Science," Dachuang Kehua is committed to continuous innovation, aiming to establish itself as a global leader in silicone materials and contribute to the sustainable development of green energy and smart manufacturing.
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