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Foam Silicone Compression-Resistant Gaskets1
Silicone Silicone ProductsFoamed SiliconeCompression-Resistant Gaskets
Hangzhou Dachuang Kehua New Material Co., Ltd.
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Product Description Product DescriptionFoam Silicone Compression-Resistant Gaskets Foam Silicone Rolls|Sound Damping Adhesive Backing Foam Silicone|Custom Shaped Seals Foam Silicone Compression-Resistant Material Foamed silicone is an advanced, lightweight, and porous elastomer derived from silicone rubber. It is specifically engineered to possess a unique cellular structure composed of numerous air or gas-filled pockets, which are evenly distributed throughout the material. This cellular architecture is typically achieved through the use of chemical foaming agents, mechanical aeration techniques, or the injection of gases during the vulcanization or curing process. The result is a soft, resilient foam matrix that retains the core performance characteristics of solid silicone rubber, such as flexibility, chemical inertness, and long-term durability, while benefiting from significantly reduced weight and enhanced cushioning properties. Key Performance Characteristics Foamed silicone exhibits excellent thermal insulation properties, primarily due to the entrapped air within its internal cells, which acts as a natural barrier against heat transfer. This makes the material highly effective for applications requiring temperature regulation or protection against thermal extremes. It is capable of withstanding a broad temperature range, from as low as -60°C up to +200°C or higher, without significant degradation in physical or mechanical performance. In addition to its thermal stability, foamed silicone offers strong resistance to ultraviolet radiation, ozone, oxidation, and a wide range of chemicals, making it well-suited for both indoor and outdoor applications across diverse environmental conditions. Its superior compressibility and energy-absorbing properties make it a reliable choice for vibration damping, shock absorption, and sealing solutions in sensitive assemblies. Foamed silicone is available in both open-cell and closed-cell configurations, allowing for application-specific customization. Open-cell foam provides good breathability and acoustic absorption, while closed-cell foam delivers strong resistance to water, moisture, and other fluid ingress-making it particularly suitable for gasket and sealing applications where environmental protection is critical. Key Features of Foamed Silicone Products Foamed silicone is a specialized silicone elastomer with a cellular structure containing air or gas-filled pockets. This lightweight material-semi-rigid or flexible-blends conventional silicone's core advantages with enhanced cushioning, insulation, and weight reduction. Produced via chemical foaming, gas injection, or mechanical aeration during curing, it delivers performance-focused solutions for industrial, consumer, and technical applications. Principal characteristics defining its performance and value: Lightweight with High CompressibilityCellular composition reduces density, suiting weight-sensitive uses.Offers excellent compressibility and recovery, ensuring reliable sealing, gasketing, and vibration isolation under mechanical stress. Thermal Insulation and Temperature ResistanceTrapped air in the foam structure provides effective thermal insulation, minimizing heat transfer.Maintains stability across -60°C to +200°C+ without deformation or degradation. Environmental and Chemical ResistanceRetains silicone's inherent resistance to UV, ozone, oxidation, water, and various chemicals.Ensures long-term durability in indoor, outdoor, industrial, or corrosive environments. Versatile Cell StructureAvailable in open-cell and closed-cell formats:Open-cell: Breathable, sound-absorbent, flexible-ideal for cushioning and acoustic uses.Closed-cell: Superior moisture resistance-excellent for environmental sealing and thermal barriers. Biocompatibility and Safety ComplianceNon-toxic, hypoallergenic, with medical- and food-grade options meeting standards (e.g., FDA, REACH, RoHS).Suitable for sensitive applications like medical padding, infant care, and food-contact insulation. Mechanical Resilience and Shock AbsorptionProvides strong shock absorption and damping, protecting components from impact and vibration.Resistant to tearing, abrasion, and fatigue, extending product life under dynamic loading. Electrical Insulation CapabilitiesMaintains reliable dielectric properties in foam form, suitable for insulating gaskets, pads, and housings in electronic devices.Manufacturing Efficiency and CustomizationCompatible with molding, extrusion, and die-cutting for high-volume production and design flexibility.Can be engineered in various densities, hardness levels, and colors to meet specific application and aesthetic needs. 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 foam silicone materials does Hangzhou Dachuang Kehua offer for compression-resistant gaskets?We specialize in high-performance foam silicone gaskets engineered for enduring compression: DC800 Series: Liquid foamed silicone gaskets (0.2-0.8g/cm3) with closed-cell structures, ideal for precision compression sealing.DC900 Series: Solid foamed silicone gaskets (0.6-1.4g/cm3) optimized for heavy-duty compression applications.DC400 Series: Fireproof ceramicized foam silicone gaskets that retain compression resistance up to 200°C, forming a fire barrier at 800°C.DC600 Series: Silicone-PTFE composite gaskets with 300% enhanced compression durability for extreme environments.2. Which industries rely on foam silicone compression-resistant gaskets?Our gaskets deliver critical performance in sectors demanding repeated compression resilience: New Energy Vehicles:Battery pack flange gaskets (withstanding 30% compression for 10,000+ cycles) and motor compartment seals.Industrial Machinery:Hydraulic equipment gaskets (resisting 50% compression under continuous load) and high-temperature oven door seals.5G Telecommunications:Outdoor base station enclosure gaskets (vibration-damping via compression) and equipment rack seals.Aerospace:Avionics compartment gaskets (low compression set under vibration) and ground support equipment seals.3. What key advantages define the DC800 Series liquid foam silicone gaskets?Core benefits for compression resistance: Uniform Compression Distribution: Self-foaming technology creates 50-100μm closed cells that evenly disperse force, reducing compression set to <20% after 70h at 200°C.Extreme Temperature Resilience: Maintains elasticity from -55°C to 200°C, ensuring reliable sealing in freeze-thaw or high-heat cycles.Dual Sealing + Cushioning: IP68 waterproofing (closed-cell structure) and 90% rebound, protecting against fluid ingress and absorbing shocks.Flame Retardancy: UL157-certified, self-extinguishing in 3 seconds without compromising compression performance.4. Are your foam silicone gaskets certified for compression resistance?Yes, with rigorous certifications: Compression Standards: ASTM D3574 (foam resilience testing) and IATF 16949 (automotive compression components).Quality & Safety: ISO 9001, UL/CUL UL157 (flame retardancy), and SGS compression set validation.Environmental Compliance: EU RoHS 2.0, REACH (no hazardous additives), and low VOC emissions.5. Do you provide custom foam silicone compression-resistant gaskets?Absolutely. Our customization includes: Compression Tuning: Adjusting cell density to withstand 10-70% deflection (e.g., 40% for industrial flange gaskets).Profile Design: Custom shapes (D-seal, rectangular, irregular) with ±0.05mm tolerance for precise gap filling.Hardness Matching: Tailoring Shore A hardness (20-60A) for specific compression force requirements (e.g., 30A for delicate electronics).6. What testing ensures compression resistance in foam silicone gaskets?Our in-house lab conducts 30+ tests, including: Compression Performance:Compression set (ASTM D395, <20% after 70h at 200°C)Cyclic compression (10,000 cycles at 30% deflection, with <5% modulus loss)Mechanical Validation: Tensile strength (≥1.5MPa) and tear resistance (≥5kN/m).Environmental Durability: Salt spray (500h), UV exposure (1,000h), and thermal cycling (-55°C~200°C).7. Which industry leaders trust your foam silicone compression-resistant gaskets?We partner with innovators requiring reliable compression performance: CATL: Battery pack gaskets (30% compression tolerance) with IP68 sealing for thermal runaway prevention.BYD: Charging station gaskets that maintain compression set after 5,000+ open/close cycles.Huawei: 5G base station gaskets (withstanding -40°C~70°C) with consistent compression resilience.8. How to inquire about foam silicone compression-resistant gaskets?Website: https://foamedsilicone.en.made-in-china.comAddress: Shunyang Industrial Park, Qingshanhu Science and Technology City, Lin'an District, HangzhouSupport: Our technical team provides compression test reports and custom gasket design consultations.
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