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China, Chinese Silicone Sealant Designed for Comprehensive Insulation Durable Waterproofing Secure Sealing for Indoor Outdoor Lighting1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Products Details Supplier Manufacturer price list catalog
Silicone Silicone ProductsSilicone SealantDurable Sealant
Hangzhou Dachuang Kehua New Material Co., Ltd.
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Product DescriptionDachuang Silicone Sealant for Lighting FixturesDachuang Silicone Sealant for Lighting Fixtures is specially formulated for the assembly and sealing of energy-saving bulbs and LED bulb housings. This single-component, neutral-curing, medium-to-high modulus silicone elastomer ensures a secure bond between lamp covers and bases, delivering long-lasting protection in demanding environments.Engineered for both indoor and outdoor lighting applications, it provides a water-tight, weather-resistant seal rated up to IP65/IP67, shielding lighting systems from moisture, dust, and environmental stress. With excellent adhesion, fast curing, high tensile strength, superior electrical insulation, and outstanding resistance to extreme temperatures, aging, and UV exposure, the sealant guarantees durability and reliability.Beyond lighting, Dachuang silicone sealant is also suitable for general-purpose sealing and electrical insulation, making it a versatile solution for manufacturers and installers alike.Trusted by lighting professionals, Dachuang ensures your fixtures are sealed, protected, and built to last.Key features and benefitsLow Volatility – Prevents Lamp FoggingFormulated with extremely low volatile compounds, the sealant minimizes the risk of fogging or hazing inside lighting fixtures, ensuring clear and bright illumination throughout the product's lifespan.Neutral Curing – Safe for Most MaterialsCures without releasing corrosive byproducts, making it safe to use with metals, plastics, glass, ceramics, and other sensitive materials commonly used in lighting assemblies.Primerless Adhesion – Broad Substrate CompatibilityBonds effectively to a wide range of substrates including aluminum, steel, glass, ceramics, and coated plastics without the need for primers, simplifying the assembly process and reducing production costs.Outstanding Thermal StabilityMaintains flexibility and sealing performance under extreme temperatures, continuously operating from -55℃ to 200℃. Withstands thermal cycling without cracking or losing adhesion, making it ideal for both indoor and outdoor lighting fixtures.Exceptional Weather and Environmental ResistanceOffers long-term durability against UV radiation, ozone, humidity, and chemical exposure. Perfectly suited for outdoor installations, street lighting, automotive lamps, and other harsh-environment applications.Superior Electrical Insulation PropertiesProvides excellent dielectric strength and insulation, ensuring safe performance in electronic and electrical lighting systems. Prevents current leakage, arcing, and short circuits.One-Component, Easy ApplicationReady to use without mixing, offering fast, efficient, and user-friendly application. Compatible with both manual and automated dispensing systems for high-volume production.Fast Curing with Strong AdhesionAchieves rapid surface cure and strong bonding strength, allowing faster assembly times and improved production efficiency.Long-Lasting ProtectionResistant to aging, shrinking, or hardening over time, ensuring lighting fixtures remain sealed, protected, and reliable for many years.While production materialtestingshowTechnical Specifications(Custom configurations available upon request.) PARAMETERSSPECIFICATIONSViscosity2000–8000 mPa·s (25℃); some models up to 25,000 mPa·sCuring TimeSurface dry: 5–10 minutes; Full cure: 24–48 hours (depending on thickness & humidity)HardnessShore A30–80 or Shore D30–70Elongation (Flexibility)200% (Type 235) – 300% (Type v568)Light Transmittance≥93% (suitable for LED optical requirements)Thermal ConductivityUp to 0.9 W/(m·K) for heat dissipation scenariosOperating Temperature Range-60℃ to +200℃Weather ResistanceExcellent UV, aging, acid/alkali, and salt spray resistanceAdhesion PropertiesStrong bonding to PC, PE, ABS, glass, aluminum, and other common lighting materialsAppearanceTransparent or semi-transparent; optional customized colorsFormulation OptionsSingle-component, room-temperature curing; non-sagging for vertical applicationApplicationsIndoor & outdoor LED lamps, light strips, guardrail tubes, street lamps, landscape lightsProduction activitiesBreif introduction to Silicone CoatingsThis single-component, medium-modulus, neutral-cure silicone sealant is specifically designed for efficient heat dissipation and flexible bonding in electronic applications. Engineered for high-temperature environments, electrical systems, and precision assemblies, it delivers strong adhesion, excellent thermal conductivity, and long-lasting elasticity.Widely applied in the electronics and electrical appliance industries, it provides reliable bonding, insulation, sealing, and thermal management. Enhanced with thermally conductive fillers, the sealant promotes effective heat transfer while maintaining structural stability and performance under thermal stress—making it a dependable choice for critical, high-demand electronic systems.Strictly controlled processing1. Raw Material SelectionProduction begins with the careful selection of high-performance raw materials tailored to the application's requirements. The primary base—polysiloxane (silicone)—is precisely blended with fillers, curing agents, adhesion promoters, stabilizers, and pigments. Each ingredient is selected to deliver specific properties such as waterproofing, thermal resistance, or high structural bonding strength.2. Compounding and MixingUsing advanced equipment like high-shear mixers and vacuum kneaders, raw materials are compounded under strictly controlled temperature and humidity conditions. This ensures a uniform mixture with stable viscosity, predictable curing behavior, and consistent adhesive performance.3. Deaeration and FiltrationThe compound undergoes vacuum deaeration to remove entrapped air, followed by precision filtration to eliminate contaminants and oversized particles. These steps are essential for achieving a smooth, defect-free sealant optimized for high-performance applications.4. Packaging and FillingThe finished sealant is dispensed into cartridges, foil sausages, pails, or drums via automated systems that ensure precise filling, airtight sealing, and extended shelf life—preventing premature curing during storage and transport.5. Quality Control and TestingEach batch is rigorously tested to ASTM, ISO, or GB standards. Key evaluations include:Tack-free timeCure rateTensile strengthElongationAdhesion to multiple substratesLong-term durabilityThese tests verify product consistency, performance reliability, and compliance with end-use specifications.6. Labeling and DistributionApproved batches are labeled with complete product and batch information, barcoded for full traceability, and packaged for secure shipment. Products are distributed globally to OEMs, construction sites, industrial facilities, and hardware suppliers—supported by comprehensive quality documentation and dependable logistics.Quality control Dachuang implements a comprehensive QC program to ensure silicone sealants for lighting applications meet the highest standards of safety, performance, and durability. Testing covers incoming materials, in-process monitoring, and final product validation. 1. Visual InspectionPurpose: First-line check to identify surface defects during production, mixing, and packaging.Method:Confirm uniform color and transparency (important for LED optics).Surface must be smooth, free from lumps, bubbles, dust, or foreign matter.Frequency: Every batch, before filling or packaging. 2. Rheological TestingObjective: Verify proper flow and application consistency.Tests: Viscosity (Brookfield, 25℃): Ensure range 2000–8000 mPa·s.Slump/Sag Resistance (ASTM D2202): Sealant must hold shape on vertical or overhead surfaces.Strategy: Conduct on each batch release; spot-check for storage stability. 3. Curing PropertiesObjective: Ensure predictable curing during lighting assembly.Tests: Tack-Free Time (ASTM C679): 5–10 minutes target.Cure-Through Time: 24–48 hours for full internal cure.Strategy: Maintain standard cure curves; adjust if deviation occurs. 4. Mechanical PerformanceObjective: Validate strength, flexibility, and bonding performance.Tests: Tensile Strength & Elongation (ASTM D412 / ISO 37): 200–300% elongation depending on grade.Adhesion & Peel Strength (ASTM C794): Test bonding to PC, PE, ABS, glass, and aluminum.Hardness (Shore A/D, ASTM D2240): A30–80 (flexible) or D30–70 (rigid).Strategy: Test representative samples; retain benchmark curves for consistency. 5. Durability TestingObjective: Simulate long-term service in indoor and outdoor lighting.Tests: UV Aging (ASTM G154): Accelerated weathering for sunlight exposure.Thermal Cycling: -60℃ to +200℃ to confirm stability.Water Resistance: Immersion and salt spray tests for swelling, discoloration, or adhesion loss.Strategy: Perform quarterly; update lifetime simulation data. 6. Chemical ResistanceObjective: Ensure resistance against common chemicals in lighting environments.Tests: Expose samples to acids, bases, and solvents.Check for discoloration, adhesion failure, or loss of strength.Strategy: Semi-annual testing; provide certification for critical projects. Packaging & ShippingProperly packingTimely deliveryProper packaging of silicone sealant is essential to maintain product quality, extend shelf life, and ensure safe transportation. Whether packed in cartridges, sausages, pails, or bulk drums, the packaging process must be precise, clean, and secure. Here is a step-by-step overview of how to properly pack silicone sealant: 1. Choose the Right Packaging TypeCartridges (280ml-300ml): Common for retail and construction applications.Sausages (400ml-600ml): Suitable for high-volume or professional use; minimizes waste.Pails/Drums (5L-200L): For bulk supply to industrial users or OEMs. 2. Prepare the Packing AreaEnsure the packing room is clean, dust-free, and temperature-controlled.Operators should wear gloves, hairnets, and protective clothing to maintain hygiene. 3. Fill the Silicone SealantUse automated filling machines or pneumatic dispensers for consistent volume and reduced air inclusion.Fill each container with the exact quantity specified, avoiding overfill or underfill. 4. Deaeration and SealingApply a vacuum or pressure system to remove trapped air (important for sausages and drums).Heat-seal or mechanically seal the packaging:Cartridges: Seal the bottom and attach the nozzle.Sausages: Seal both ends with aluminum clips or crimping tools.Bulk Containers: Ensure tight-fitting lids and tamper-proof seals. 5. LabelingApply product labels with:Batch numberProduction date and expiry dateGrade, color, and usage instructionsStorage guidelines and safety warnings 6. Cartoning and Outer PackagingPlace individual units (e.g., 24 cartridges or 20 sausages) into corrugated cartons with dividers.For pails or drums, use palletized shipping with corner guards and stretch film. 7. Storage and ShippingStore in a cool, dry warehouse (generally below 25°C).Rotate stock using FIFO (First In, First Out) to prevent product aging.Avoid exposure to direct sunlight, high humidity, and freezing temperatures.ApplicationsCompany ProfileSilicone Expert-Dachuang KehuaIntroduction to Services Offered by Dachuang Kehua New Materials Technology Co., Ltd.Dachuang Kehua New Materials Technology Co., Ltd. is a leading manufacturer and comprehensive solutions provider specializing in advanced silicone materials. Backed by deep expertise in material science and precision engineering, we deliver a wide range of services designed to meet the highest standards of sealing, insulation, protection, and cushioning across diverse industries. Our commitment to innovation, quality, and customization enables us to support complex and high-performance applications in even the most demanding environments.Our Core Services Include:Custom Silicone Foam SolutionsProduction of closed-cell and open-cell silicone foam products tailored for sealing, cushioning, thermal insulation, and environmental protection—available in sheets, rolls, gaskets, and custom die-cut formats.Solid Silicone Rubber ManufacturingPrecision-molded solid silicone components with superior mechanical strength and resistance to weather, temperature, and chemicals—ideal for industrial, automotive, and medical use.Gel and Soft Silicone EngineeringSoft, resilient silicone gels and pads designed for electronics thermal management, medical-grade cushioning, and impact protection applications.Semi-Fluid and Potting SiliconeFlowable silicone formulations for encapsulation, potting, and bonding—offering reliable insulation, moisture protection, and heat dissipation.Adhesive-Backed Silicone Tapes and PadsSilicone sponge and foam products laminated with high-performance adhesives for easy application and secure, long-lasting sealing.Die-Cutting and CNC Precision ProcessingCustom fabrication of complex parts such as gaskets, pads, and thermal interface materials using advanced die-cutting, CNC machining, and laser cutting technologies.Flame-Retardant and Specialty GradesDevelopment of silicone materials that meet specific industry and regulatory standards, including flame-retardant, low outgassing, FDA-compliant, and electrically insulating grades.R&D and Custom Formulation ServicesCollaborative development of tailor-made silicone formulations to meet unique project requirements—from material design to product testing and final validation.FAQQ1: What types of lighting applications is Dachuang Silicone Sealant designed for?A1: It is specially developed for LED lamps, decorative lights, light strips, neon flex, street lamps, and outdoor fixtures. It provides comprehensive insulation, waterproofing, and sealing protection for both indoor and outdoor environments. Q2: Can it be used outdoors under harsh weather conditions?A2: Yes. Dachuang Silicone Sealant is UV-resistant, weatherproof, and temperature stable from -60°C to +200°C, ensuring long-term performance in rain, sunlight, heat, and cold. Q3: Does the sealant affect LED brightness or light transmittance?A3: No. The sealant features high transparency (≥93%), which preserves LED brightness and optical performance while providing secure sealing. Q4: What materials does the sealant bond to?A4: It adheres strongly to PC, PE, ABS, glass, aluminum, and stainless steel, making it suitable for a wide variety of lighting housings and substrates. Q5: How quickly does the sealant cure?A5: Surface curing (tack-free time) occurs within 5–10 minutes, while complete curing is achieved in 24–48 hours, depending on thickness and humidity. Q6: Is it flexible enough for applications with vibration or thermal expansion?A6: Yes. With elongation up to 200–300%, the sealant maintains excellent flexibility and adhesion even under vibration, thermal cycling, and expansion/contraction stresses. Q7: Does it provide reliable electrical insulation for LED lights?A7: Absolutely. Dachuang Silicone Sealant offers excellent dielectric strength and insulation properties, making it safe for use in LED strips, electronic modules, and lighting assemblies. Q8: How is the product packaged?A8: Dachuang Silicone Sealant is available in convenient cartridge or tube formats, with customized packaging options for bulk or OEM requirements.
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