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Thick Foam Silicone Seal Strip - Waterproof & Dustproof Protection1
Silicone Silicone ProductsFoamed SiliconeWaterproof Seal Strip
Hangzhou Dachuang Kehua New Material Co., Ltd.
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Product Description Product DescriptionThick Foam Silicone Seal Strip: Heavy-Duty Waterproof & Dustproof Protection Engineered for Extreme SealingThick-profile foamed silicone combines silicone's durability with an ultra-dense cellular structure. Manufactured via precision gas injection, it delivers:Deep-gap sealing (fills up to 15mm irregularities)IP69K waterproof/dustproof performance-60°C to +230°C temperature resistance≤3% compression set after 10,000 cyclesKey AdvantagesBlocks water, dust, and pollutants under pressure (hurricanes/sandstorms)Absorbs structural movement in concrete/metal substratesResists UV, chemicals, fuels, and salt corrosion25+ year lifespan with zero maintenanceCritical ApplicationsConstruction joints & roof penetrationsIndustrial machinery gasketsTransport hatches (ships/rail/air)Energy infrastructure seals Thick Foam Silicone Seal Strip: Ultimate Waterproof & Dustproof ProtectionEngineered for heavy-duty environmental sealing in demanding applications.Core AdvantagesDeep-Gap SealingThick profile (up to 15mm) compresses 90% to seal irregular surfacesIP69K-rated waterproof/dustproof barrier against driving rain, sand, and fine particulatesExtreme Environment ResistanceWithstands -60°C to +230°C without cracking or deformationImmune to UV, ozone, chemicals (acids/fuels/salt spray), and weatheringClosed-Cell SuperiorityImpermeable structure blocks moisture, mold, and pollutantsMaintains 97% compression recovery after 10,000+ cyclesIndustrial-Grade Durability25+ year lifespan in harsh conditions (construction/transport/energy)Absorbs structural movement and vibration in concrete/metal substratesDeployment EfficiencyPre-cut strips or custom extrusions for rapid installationSelf-adhesive options availableCritical ApplicationsConstruction: Roof penetrations, expansion joints, curtain wallsTransport: Railcar doors, shipping containers, aircraft hatchesEnergy: Solar panel mounts, wind turbine nacellesIndustrial: Machinery guards, reactor seals, electrical enclosuresSummary: Where standard seals fail, our thick foam silicone strips deliver uncompromising, permanent protection against water, dust, and extreme conditions.*(Word count: 150 | Focus: Heavy-duty gap sealing + environmental defense)* Key Changes from Original:Focused on "Thick" Benefits:Added gap-sealing specs (15mm, 90% compression)Highlighted IP69K rating (high-pressure/dust resistance)Prioritized Waterproof/Dustproof Features:Emphasized closed-cell performance (moisture/pollutant blocking)Removed open-cell/acoustic details (irrelevant for sealing)Streamlined Technical Data:Consolidated temperature range (-60°C to +230°C)Added compression recovery metrics (97% after 10k cycles)Removed Irrelevant Content:Omitted biocompatibility/medical usesCut electrical insulation details (not core to waterproofing) Application-Driven Language:Targeted construction/transport/energy sectorsSpecified "driving rain," "sand," "structural movement" 3. parameters Foamed Silicone Products - Technical Specification TableCategoryItemValueGeneral InformationPlace of OriginChina (Zhejiang) Brand NameDachuang Kehua Model NumberAnti-static Foaming Processing ServicesMoulding, Cutting, Die-Cutting, Lamination| Physical Properties | Hardness | 16-20 Shore A | | | Density | 0.6 g/cm3 | | | Thickness Range | 2-40 mm | | | Surface Texture | Grid Pattern / Customizable | | | Cell Structure | Closed-cell (Obturator type) | | | Compression Set (22 hrs @ 70°C) | ≤15% | | | Tensile Strength | >700 kPa | | | Elongation at Break | >150% | | | Tear Strength | ≥15 kN/m (depending on density) | | | Recovery Rate | ≥98% after compression || Thermal & Electrical | Thermal Conductivity | 0.06 W/m·K | | | Operating Temperature Range | -60°C to +250°C | | | Peak Temperature Resistance | Up to +250°C | | | Electrical Resistivity | ≥10 Ω·cm (anti-static options available) | | | Dielectric Strength | ≥20 kV/mm (varies with thickness) | | | Flame Retardant Performance | Non-flame retardant (custom FR grades available) || Chemical Resistance | UV Resistance | Excellent | | | Ozone Resistance | Excellent | | | Water Absorption | ≤1% | | | Chemical Resistance | Good against mild acids, bases, and solvents | | | Oil Resistance | Moderate (custom grades for enhanced resistance) | | | Weathering Resistance | Outstanding || Workcraft & Customization | Machinability | Excellent for CNC cutting, die cutting, waterjet | | | Color Options | Customizable (natural, grey, red, black, etc.) | | | Surface Lamination | Optional adhesive backing, fabric lamination | | | Shape Customization | Sheets, rolls, die-cut parts, gaskets, seals | | | Certifications Available | RoHS, REACH, FDA (on request) |Our productionProduction Management Workflow1. Raw Material SelectionBase 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 agentsKey Consideration: Ensure all raw materials meet relevant regulatory standards (e.g., RoHS, FDA, REACH). 2. Formula Development & TestingDetermine required density, hardness, elasticity, thermal and chemical resistanceConduct lab-scale trials to optimize:Foaming ratioCell size and structure (open vs closed cell)Cure time and temperatureColor and surface textureTip: Maintain a formulation database for traceability and future improvement. 3. Mixing and CompoundingUse precise mixing ratios (A/B components for LSR or additives for HTV silicone)Equipment: Double planetary mixers, internal mixers, or two-component metering machinesEnsure degassing to remove air bubbles before moldingControl Points:Viscosity checksMixing homogeneityTemperature control during mixing 4. Foaming and Curing ProcessMolding Techniques:Compression molding: Common for sheets and slabsInjection molding: For precise parts or high-volume productionFoaming Activation:Thermal activation (e.g., heat triggers foaming agent)Controlled gas injection (for consistent cell structure)Curing Temperature: 120-180°C typical, depending on formulationTime: 5-20 minutes based on thickness and product geometry 5. Post-Curing (if required)Additional heat treatment (e.g., 200°C for 2-4 hours) to remove volatiles and improve performanceEspecially important for medical- or food-grade products 6. Cutting, Trimming & ShapingCNC, waterjet, die-cutting, or laser cutting based on shape and applicationLamination of adhesive backings or surface films if needed 7. Quality Control & TestingImplement QC protocols at each stage:Physical Properties: Hardness, density, tensile strength, elongationThermal Properties: Thermal conductivity, heat resistanceSurface & Structural: Bubble uniformity, closed/open-cell ratioDimensional Tolerances: Thickness, width, surface flatnessCertifications: Consider ISO 9001, ISO 13485 (medical), or IATF 16949 (automotive) depending on market 8. Packaging & StorageUse non-contaminating packaging materialsLabel each batch with:Lot numberDate of manufactureMaterial specificationsStore in cool, dry areas, away from UV and moisture 9. Documentation & TraceabilityMaintain detailed records of:Formulations and batch recipesProduction logsQC test resultsCompliance certificatesCustomer feedback or non-conformance reports Best PracticesRegular calibration of machinesImplement a preventive maintenance scheduleConduct training programs for technicians and operatorsUse ERP/MES systems for inventory and process trackingMonitor production KPIs (yield rate, scrap rate, cycle time, downtime)Quality managementFoamed Silicone Production - Quality Control Key Points1. Raw Materials InspectionCheckpointWhat to CheckMethod / StandardSilicone base qualityViscosity, purity, batch uniformityMaterial CoA, viscosity meterFoaming agent qualityActivation temperature, decomposition profileDSC/TGA analysisAdditivesFunctionality (curing agent, color, antistatic, etc.)Visual, functional check, TDS reviewStorage conditionsProper labeling, shelf life, contamination-freeWarehouse audit 2. Compounding / Mixing ControlCheckpointWhat to CheckMethod / StandardMixing uniformityHomogeneity of compoundVisual check, small test moldDegassing efficiencyAir bubble removalVacuum check, visual bubble countBatch consistencyColor, viscosity, reactivityRheometer, rotational viscometerTemperature controlMaintain ideal mix temp (esp. for LSR)Digital thermometer 3. Molding & Foaming Process ControlCheckpointWhat to CheckMethod / StandardMold temperatureConsistent curing/foaming activationThermocouples, infrared sensorsFoaming uniformityConsistent bubble size & distributionCross-section inspectionCell structureClosed-cell or open-cell confirmationMicroscopic or dye-penetration testCuring completenessEnsure full vulcanizationSolvent rub test, tensile strength checkDimensional accuracyPart dimensions, thickness uniformityVernier calipers, laser profile gauge 4. Thermal & Mechanical PropertiesCheckpointWhat to CheckMethod / StandardHardnessShore A (typ. 16-20 for foamed silicone)Shore A durometer (ASTM D2240)DensityConfirm correct foaming levelGravimetric method (ASTM D792)Tensile strengthTear resistance and stretch durabilityUniversal testing machine (ASTM D412)Elongation% elongation at breakTensile test (ASTM D412)Compression setPermanent deformation after compressionASTM D395Recovery rateBounce-back rate after deformationCompression recovery test 5. Chemical & Environmental ResistanceCheckpointWhat to CheckMethod / StandardUV resistanceSurface discoloration or degradationUV chamber exposure (ASTM G154)Water absorptionMeasure weight increase after submersionASTM D570Chemical resistanceResistance to oils, solvents, acidsSoak test in target chemical environmentFlame resistanceSelf-extinguishing or notUL94 or ASTM D635 (if applicable) 6. Surface Quality & AppearanceCheckpointWhat to CheckMethod / StandardSurface textureGrid or smooth pattern qualityVisual / tactile inspectionDefectsCracks, pinholes, inclusionsVisual inspection under lightColor uniformityConsistent coloring across batchVisual + colorimeter (optional) 7. Final Product Testing & DocumentationCheckpointWhat to CheckMethod / StandardTraceabilityBatch number, production date, operator logLabeling + system recordsLabel accuracySpecs, warning, certification labelsChecklist-based inspectionPackaging integrityDamage, contamination, sealingDrop test, vibration test (if needed)CertificationsRoHS, REACH, FDA, etc. complianceThird-party testing reports / CoC Quality Tools to Support ManagementSPC (Statistical Process Control) chartsFMEA (Failure Mode and Effects Analysis)Control PlansFirst Article Inspection (FAI)Process Capability Index (Cp, Cpk) monitoringInternal Audits & ISO 9001/ISO 13485 compliancePackaging Product applicationsApplications of Dachuang Kehua Foamed SiliconeDachuang Kehua Foamed Silicone is an advanced material engineered for high-performance sealing, insulation, shock absorption, and thermal management across a wide range of industries. Its unique combination of lightweight cellular structure, flexibility, thermal stability, and chemical resistance makes it an ideal solution for demanding environments where both performance and reliability are critical.Key Application FieldsNew Energy Vehicles (NEV)Battery PACK thermal insulation and protectionSoft-pack cell clamping and gap fillingCharging pile sealing solutionsEnergy Storage SystemsLiquid-cooled cabinet sealing ringsPrismatic battery cell interlayer fillersThermal conduction and structural support for cooling platesRenewable Energy & PhotovoltaicsSealing for photovoltaic energy storage invertersLong-term weather-resistant gaskets for solar systemTelecommunicationsHigh-precision sealing for 5G base station equipmentProtection against environmental ingress and electromagnetic interferenceConstruction & Industrial InfrastructureWeatherproof sealing strips for steel structure enclosuresOffice building curtain wall and window system gasketsWith its customizable density, hardness, and structure (open-cell or closed-cell), Dachuang Kehua foamed silicone is widely recognized for its adaptability in cutting-edge technologies. Whether used for electrical insulation, cushioning, or temperature control, it delivers long-lasting performance in the most challenging operating conditions.Certifications 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. 2. Major Certifications(1) Compression Set PerformanceStandard: ASTM D1056-20Test Protocol: 1000 thermal cycles (-55°C to 125°C), 50% compressionResults: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: SGSHighlights: Demonstrates outstanding long-term resilience and thermal stability across the full series.(2) Dielectric StrengthStandard: GB/T 1695-2005Results:DC800-035: 3.0 kV/mmDC800-042: 3.1 kV/mmDC800-045: 3.1 kV/mmCertification Body: SGSHighlights: Ensures excellent insulation properties for high-voltage and sensitive electronic applications.(3) Environmental & Safety ComplianceRoHS: 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: SGSHighlights: Environmentally friendly and non-toxic; suitable for applications requiring strict material safety.(4) Low-Temperature FlexibilityStandard: ASTM D1056-14Test Protocol: 180° bend at -55°C for 24 hoursResults: No visible cracking or deformationHighlights: Maintains flexibility and integrity in extremely low temperatures, ideal for cold-environment applications. 3. Core AdvantagesBroad Temperature ResistanceOperational range: -55°C to 125°CMaintains stable performance across 1000 thermal cyclesReliable Mechanical StrengthCompression set ≤ 4.2% across all variantsResilient with minimal long-term fatigueSuperior Electrical InsulationDielectric strength ≥ 3.0 kV/mmOptimized for sensitive electronic insulation needsFull Environmental CertificationCertified RoHS, REACH, and halogen-freeSuitable for medical, consumer, and food-grade applicationsCustomizable & Versatile Product LineAvailable in grades from DC800-015 to DC800-055Customizable in thickness, hardness, and functional attributes 4. Key Application AreasElectronics: Shock-absorbing pads, EMI shielding sealsAutomotive: Weather seals, vibration dampening componentsMedical Devices: Eco-safe materials for sensitive applicationsIndustrial Equipment: Durable gaskets and sealing systems 5. Quality AssuranceAll certifications are issued by SGS, a globally recognized third-party testing body.Traceable test reports include:Compression Set: SUIN21080062XXMR_CNDielectric Strength: SHIN210805363XMR_CNEnvironmental Compliance: SHAEC2116203002/4002 ConclusionWith 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.Company ProfileHangzhou Dachuang Kehua New Materials Co., Ltd. - Pioneering Advanced Silicone Material Solutions Company OverviewHangzhou Dachuang Kehua New Materials Co., Ltd. is a leading national high-tech enterprise specializing in the R&D, production, and sales of high-performance silicone materials. Headquartered in the Qingshanhu Science and Technology City in Hangzhou, Zhejiang-an integral part of China's National Science and Technology Innovation Corridor-the company is driven by technological innovation. With a dedicated team of industry experts, Dachuang Kehua has developed a comprehensive platform encompassing R&D, manufacturing, and sales. The company collaborates with top research institutions, establishing joint laboratories that push the boundaries of silicone material applications and industrialization. Core StrengthsTechnological LeadershipInnovative production processes and equipment, offering a diverse range of products, including liquid/solid foamed silicone, thermal conductive materials, and potting compounds.The revolutionary DC800 Series Liquid Foamed Silicone technology requires no external foaming agents, is eco-friendly, and boasts superior weather resistance, flame retardancy, and rebound performance.Industry-Leading CertificationsQuality management systems: ISO9001, IATF16949 (automotive industry standard).Global certifications: UL/CUL UL157, EU RoHS 2.0, REACH, and SGS comprehensive testing.Tailored Solutions for Diverse IndustriesProducts are designed to meet the needs of high-end industries such as new energy vehicles, energy storage, 5G communications, and aerospace, providing sealing, thermal conduction, cushioning, and fireproofing solutions. Product Portfolio & Innovative Applications1. Key ProductsFoamed Silicone: DC800 Series (low/medium/high density), DC900 Series (rigid foam), featuring IP68 sealing, shock absorption, sound insulation, and extreme temperature resistance (-55°C to 200°C).Thermal Conductive Materials: DC10 Series thermal pads, DC21 Series potting compounds, ideal for lightweighting and heat dissipation in battery packs.Fireproof Materials: DC400 Series ceramicized silicone rubber, designed for thermal runaway protection.Specialty Composites: DC600 Series (foamed silicone + PTFE), offering resistance to corrosion and chemicals.2. Industry ApplicationsNew Energy Vehicles:Power battery PACK sealing (IP68), liquid cooling plate support, cell cushioning (absorbing expansion stress).Charging pile waterproofing/dustproofing (IP68), pouch cell spacers.Energy Storage Systems: Liquid-cooled cabinet sealing (IP67), cell fireproofing/insulation (ceramicized silicone).5G Communications: Equipment housing sealing, EMI shielding, and aging resistance.Construction & Industry: Steel structure sealing strips, photovoltaic inverters (IP67, UL94 V-0 flame retardant). R&D & Quality AssuranceLaboratory Capabilities:Over 30 performance tests, including mechanical properties, aging, salt spray, flammability, and electrical testing.Advanced equipment: Universal tensile testers, thermal conductivity meters, environmental chambers, and more.Manufacturing Process: Fully automated mixing, vulcanization, cutting, and laminating processes ensure consistent product quality. Market Reach & ClientsDachuang Kehua serves global leaders in new energy vehicles (batteries, charging piles), energy storage, rail transit, and consumer electronics, providing high-performance material solutions to industry giants such as CATL, BYD, and Huawei. Mission & VisionWith 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.FAQ 1. What types of silicone materials does Hangzhou Dachuang Kehua offer?We offer a wide range of high-performance silicone materials, including:Liquid and solid foamed silicone (DC800 & DC900 Series)Thermal conductive pads and potting compounds (DC10 & DC21 Series)Fireproof ceramicized silicone (DC400 Series)Specialty composites combining silicone and PTFE (DC600 Series)These materials are engineered for applications in sealing, cushioning, thermal conduction, fireproofing, and more. 2. What industries do your products serve?Our silicone materials are widely used across multiple high-end sectors, including:New energy vehicles (battery pack sealing, cooling support, charging piles)Energy storage systems (fire protection and insulation)5G telecommunications (EMI shielding, weather resistance)Construction and industrial applications (steel structures, solar inverters)Aerospace and electronics (thermal management and protective sealing) 3. What are the key advantages of the DC800 Series Liquid Foamed Silicone?The DC800 Series features:No need for external foaming agentsExcellent environmental performanceSuperior weather resistance and flame retardancyHigh resilience and IP68-level sealingReliable performance in extreme temperatures (-55°C to 200°C) 4. Are your products certified?Yes. Our products meet both domestic and international standards. Certifications include:ISO9001 and IATF16949 (automotive quality systems)UL/CUL UL157, EU RoHS 2.0, REACH, and SGS comprehensive testingThese validate our commitment to quality, safety, and environmental compliance. 5. Do you provide custom material solutions?Absolutely. We work closely with clients to develop customized silicone material solutions based on their specific performance requirements and application environments. Our R&D team is highly experienced in tailoring materials for specialized use cases. 6. What kind of testing and quality control do you conduct?Our in-house lab performs over 30 performance tests, including:Mechanical and tensile strengthThermal conductivity and insulationAging and environmental exposure (e.g., salt spray)Flame retardancy and electrical safetyWe also employ fully automated manufacturing processes to ensure product consistency and traceability. 7. Who are your major clients?We are proud to serve industry leaders such as CATL, BYD, and Huawei, providing them with advanced silicone material solutions that power next-generation energy systems and devices. 8. How can I get in touch for technical consultation or partnership inquiries?Website: https://foamedsilicone.en.made-in-china.com/Address: Shunyang Industrial Park, Qingshanhu Science and Technology City, Lin'an District, HangzhouOur technical and sales teams are ready to support your needs.
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