Premium Silicone Sealing Strips for Superior Buildings

• Customization: Available
• Material: Organic Silicone
• Application: Household, Medical, Industrial, Agricultural
• Model NO.: solid silicone strip
• Certification: ISO, REACH, RoHS
• Transport Package: Carton + Pallet
• Specification: customized
• Trademark: Dachuang Kehua
• Origin: China
• HS Code: 3910000000
• Production Capacity: 1000000 Sqm/Week
• Package Size: 40.00cm * 20.00cm * 35.00cm
• Package Gross Weight: 12.000kg

Product Description

Product Description

Advanced Silicone Rubber Sealing Strips for High-Performance Building Envelopes

Engineered with precision using high-temperature vulcanization (HTV) technology, our advanced silicone rubber sealing strips set a new benchmark in durability and efficiency for modern construction. Designed to outperform traditional rubber and plastic alternatives, they offer superior resilience, weather protection, and sealing performance in even the most demanding environments.

Key Advantages of Silicone Sealing Strips

• Extreme Temperature Resistance
  Maintains flexibility and functionality across a broad temperature range, from sub-zero conditions to over 200°C.

• Superior Weather & UV Stability
  Withstands prolonged exposure to sunlight, ozone, and harsh environmental conditions without cracking, fading, or degradation.

• Long-Lasting Elasticity
  Maintains shape and sealing properties over time, resisting brittleness, compression set, and deformation.

• Environmentally Friendly & Non-Toxic
  Free from harmful substances and compliant with green building standards-ideal for sustainable and indoor applications.

• Excellent Insulation Performance
  Enhances thermal and acoustic insulation while preventing air, moisture, and dust infiltration.

• Lightweight & Cost-Efficient
  Delivers high material yield, reduced waste, and lower installation costs without compromising performance.

• Tailor-Made Profiles
  Customizable to suit complex geometries and seamlessly integrate with a wide variety of building systems and design aesthetics.

Applications

• Curtain wall and structural glazing systems

• Aluminum, PVC, and wooden door and window assemblies

• Glass facades, skylights, and interior partitioning

• Passive house and energy-efficient building envelopes

• Residential, commercial, and high-rise developments

Designed to form an airtight, watertight, and soundproof seal, our silicone rubber sealing strips significantly enhance building performance while ensuring long-term comfort, efficiency, and structural integrity.

Choose cutting-edge silicone sealing solutions-where innovation meets lasting performance.

Premium Silicone Rubber Sealing Strips
The Ultimate Weatherproofing and Performance Solution

Engineered for modern architecture and extreme environments, our next-generation silicone rubber sealing strips deliver unmatched performance, longevity, and adaptability. Developed through cutting-edge material science, these advanced seals offer architects and engineers the ideal combination of structural reliability, environmental resistance, and design flexibility.

Unmatched Performance Features

Extreme Temperature Adaptability

• Reliable operation from -60°C to +200°C, suitable for both cryogenic and high-temperature applications

• Maintains sealing integrity in arctic cold, desert heat, and industrial thermal cycles

Advanced Weather Resistance

• UV-stabilized compound resists degradation from prolonged sun exposure

• Defends against ozone, acid rain, and salt spray for marine and urban environments

• Proven 25+ year outdoor service life with no cracking, chalking, or hardening

Exceptional Durability

• <10% compression set after 10,000 hours

• Retains 90% elasticity after 15+ years of continuous use

• Enhanced with anti-aging additives for extended lifespan

Sustainable and Safe

Eco-Conscious Composition

• REACH and RoHS compliant for responsible manufacturing

• Zero VOC emissions, improving indoor air quality

• Available in food-grade and medical-grade variants

Safety-Focused Options

• UL94 V-0 flame retardant formulations

• Low smoke toxicity for enclosed spaces

• Static dissipative versions for sensitive electronic environments

Structural and Dynamic Advantages

Optimized Physical Properties

• High strength-to-weight ratio minimizes structural impact

• Precision-extruded for dimensional stability

• Up to 40% material savings vs traditional rubber seals

Dynamic Movement Compensation

• 98% elastic recovery after repeated compression

• Supports 25% joint expansion/contraction

• Responsive, memory foam-like behavior adapts to structural shifts

Intelligent Moisture Control

• Micro-porous matrix prevents condensation buildup

• Balanced vapor permeability (500-800g/m²/24h)

• Built-in capillary break design blocks water migration

Chemical and Environmental Resilience

Broad Chemical Resistance

• Withstands pH 2-12, hydrocarbons, solvents, and de-icing salts

• Ideal for marine, industrial, and chemical-prone environments

Tailored for Architectural Precision

Custom Extrusion Capabilities

• Complex geometric profiles for advanced facade designs

• Pantone color matching and textured finishes for aesthetic continuity

• Seamless interface with aluminum, glass, wood, and composite materials

Technical Specifications

• Tensile Strength: 8-12 MPa

• Elongation at Break: 400-600%

• Tear Resistance: 25-40 kN/m

• Hardness: Shore A 40-80 (customizable)

Certifications & Standards

• ISO 9001 / ISO 14001 certified manufacturing

• ASTM C920 compliant for joint sealing

• EN 1366 fire resistance tested

• LEED documentation available for sustainable building credits

Application-Specific Benefits

• Curtain Walls & Glazing Systems: Accommodates multi-directional movement

• Healthcare Facilities: Inhibits microbial growth

• Data Centers: Available in EMI/RFI shielding grades

• Coastal & Marine Buildings: Built-in salt corrosion resistance

Choose the sealing solution that delivers performance without compromise.
Our continuously evolving R&D and technical support empower your most demanding projects-today and into the future.

Our Production

Solid Silicone Production Management Workflow

1. Raw Material Selection

• Base Material: High-purity silicone rubber (LSR or HTV)

• Additives:

  • Curing agents (peroxide or platinum-based)

  • Reinforcing fillers (e.g., silica)

  • Flame retardants, colorants, UV stabilizers

• Key Requirement: Compliance with RoHS, FDA, REACH, and industry-specific standards

2. Formula Development & Testing

• Define hardness (Shore A), tensile strength, elongation, and thermal stability

• Lab trials for:

  • Cure time/temperature optimization

  • Color consistency

  • Mechanical performance validation

• Maintain a formulation database for traceability

3. Mixing & Compounding

• Equipment: Internal mixers, two-roll mills, or twin-screw extruders

• Critical Controls:

  • Precise additive dosing

  • Homogeneous dispersion

  • Degassing to eliminate trapped air

  • Viscosity & pot life monitoring

4. Molding & Curing

• Process Options:

  • Compression Molding (for sheets, gaskets)

  • Injection Molding (complex geometries)

  • Extrusion (profiles, tubing)

• Curing Parameters:

  • Temperature: 120-200°C

  • Pressure: 5-20 MPa

  • Time: 2-15 min (varies by thickness)

5. Post-Curing (If Required)

• Secondary heat treatment (e.g., 4 hrs at 200°C) to enhance:

  • Crosslinking density

  • Thermal stability

  • Volatile removal (critical for medical/food-grade)

6. Secondary Processing

• Cutting/Trimming: Die-cutting, CNC, laser, or waterjet

• Surface Treatments: Plasma coating, adhesive lamination

• Assembly: Bonding with metals/plastics (for multi-material parts)

7. Quality Control & Testing

• Mechanical Tests: Hardness, tensile strength, compression set

• Thermal Tests: TGA, DSC, heat aging resistance

• Chemical Resistance: Oil, acid, solvent exposure

• Dimensional Checks: Thickness, flatness, tolerances (±0.1mm)

• Certifications: ISO 9001, ISO 13485, IATF 16949

8. Packaging & Storage

• Anti-static or vacuum-sealed packaging

• Labeling: Batch #, manufacture date, shelf life

• Storage: <30°C, 50% RH, away from direct sunlight

9. Documentation & Traceability

• Records: Batch logs, QC reports, material certificates

• ERP/MES Integration: Real-time tracking of production KPIs (yield rate, scrap rate)

Best Practices for Solid Silicone Production

Preventive Maintenance: Regular calibration of molds and presses
Operator Training: Standardized SOPs for consistency
Continuous Improvement: Root-cause analysis for defects (e.g., air traps, uneven curing)
Sustainability: Recycle trim waste into reusable feedstock

Quality management

Solid Silicone Rubber Production Workflow - High-Performance Applications

Solid silicone rubber (HTV or HCR) is widely used for gasketing, insulation, and sealing in demanding sectors such as automotive, aerospace, and healthcare. Below is a comprehensive production workflow:

1. Material Preparation

• Base Polymer Selection: Choose high-purity HTV silicone gum

• Additive Integration: Mix reinforcing fillers (e.g., fumed silica), pigments, and curing agents

• Storage & Handling: Store in temperature- and humidity-controlled environments to prevent contamination

2. Compounding Process

• Kneading/Two-Roll Milling: Achieve homogeneous dispersion of additives

• Pre-curing Checks: Test compound viscosity, dispersion, and scorch time

• Batch Labeling: Assign traceable batch IDs for each compounded lot

3. Shaping/Forming

• Molding Options: Compression, transfer, or injection molding based on geometry

• Tool Temperature Control: Maintain mold temperatures between 150°C and 220°C

• Cycle Timing: Optimize press time for full crosslinking

4. Curing Process

• Primary Curing: Molded parts are cured under pressure and heat

• Post-Curing (if needed): Optional secondary curing in an oven (e.g., 200°C for 4 hours) to remove residual volatiles and enhance performance

5. Trimming & Finishing

• Flash Removal: Manual or automated trimming of excess rubber

• Surface Treatments: Optional coatings for friction reduction or hydrophobicity

• Dimension Check: Measure tolerances using calipers or coordinate measuring machines (CMMs)

6. Inspection & Testing

• Physical Testing: Hardness (ASTM D2240), tensile strength (D412), elongation, tear resistance

• Thermal Resistance: Heat aging and cold flexibility tests

• Electrical Properties: For insulation-grade silicone (e.g., dielectric strength per ASTM D149)

7. Packaging & Traceability

• Labeling: Include product code, lot number, and date of manufacture

• Packaging: Use moisture- and dust-resistant bags or cartons

• Documentation: Attach CoA, MSDS, and regulatory certificates

8. Quality Assurance

• In-Process Audits

• First Article Inspections

• SPC Monitoring & Corrective Action Logs

Packaging & Shipping

Product applications

Ideal Applications of High-Performance Solid Silicone Sealing Strips

High-end solid silicone rubber sealing strips are engineered to deliver exceptional sealing, insulation, and environmental protection across a wide range of demanding construction and industrial applications. Their unmatched durability, elasticity, and weather resistance make them indispensable in both traditional and high-tech building systems.

1. Building Curtain Wall Systems

• Provide long-lasting seals between glass panels and metal frames, preventing water infiltration and air leakage.

• Maintain flexibility across temperature extremes, ensuring structural integrity in high-rise buildings.

2. Aluminum Alloy Doors and Windows

• Ensure airtight and watertight sealing around operable window and door frames.

• Resist deformation and aging under daily use, UV exposure, and seasonal temperature changes.

3. PVC, UPVC, and Wooden Window Frames

• Enhance thermal and acoustic insulation in residential and commercial windows.

• Suitable for both double-glazed and triple-glazed systems, reducing energy loss.

4. Glass Facades, Skylights & Roof Glazing

• Maintain a durable, weatherproof barrier in structural glazing systems exposed to direct sunlight, wind, and rain.

• Ideal for complex geometries and curved installations due to their excellent conformability.

5. Energy-Efficient and Passive Houses

• Essential for thermal bridge reduction and maintaining building envelope integrity.

• Help achieve LEED, BREEAM, or Passive House certification by improving air tightness and energy performance.

6. Cleanrooms and Medical Facilities

• Offer non-toxic, non-reactive sealing in hospitals, pharmaceutical labs, and sterile environments.

• Resistant to microbial growth, chemicals, and regular cleaning agents.

7. Automotive and Rail Vehicle Interiors

• Used in door seals, window channels, and HVAC systems for noise reduction, thermal management, and dust protection.

• Perform reliably under vibration, compression, and outdoor exposure.

8. Electrical and Electronics Enclosures

• Protect sensitive components from moisture, dust, and EMI in outdoor junction boxes or telecom equipment.

• Maintain sealing even under prolonged thermal cycling and electrical loading.

9. Aerospace, Marine & Defense Structures

• Used in access panels, hatches, and fuselage joints requiring low outgassing and extreme weather durability.

• Withstand ozone, salt spray, and corrosive environments, critical in marine and coastal buildings.

10. Industrial Equipment & Machinery

• Serve as gaskets and seals in industrial ovens, cleanroom equipment, HVAC units, and compressors.

• Provide chemical and high-temperature resistance in process-intensive environments.

Summary of Key Benefits Across Applications

• Weatherproofing and air sealing

• Thermal and acoustic insulation

• Long-term elasticity and durability

• Compatibility with diverse substrates (glass, metal, wood, plastic)

• Compliance with green building standards

Certifications

Company Profile

Hangzhou Dachuang Kehua New Materials Co., Ltd.
Pioneering Advanced Silicone Material Solutions

Company Overview

Hangzhou Dachuang Kehua New Materials Co., Ltd. is a national high-tech enterprise specializing in the research, development, production, and sales of high-performance silicone materials.

Located in Qingshanhu Science and Technology City, Hangzhou-at the heart of China's National Science and Technology Innovation Corridor-Dachuang Kehua thrives on technological advancement and deep industry expertise. Backed by a skilled technical team and strong partnerships with leading research institutions, the company has established an integrated platform that unites R&D, manufacturing, and sales.

With state-of-the-art laboratories and advanced production facilities, Dachuang Kehua continues to expand the industrial application of silicone materials, driving innovation across diverse sectors.

Core Strengths

Technological Leadership

Dachuang Kehua utilizes proprietary production processes and cutting-edge equipment to produce a broad range of silicone-based products, including:

• Liquid and solid foamed silicone

• Thermal interface materials

• Potting compounds

• Specialty composites

A standout innovation is the DC800 Series Liquid Foamed Silicone, an environmentally friendly solution free from external foaming agents. It offers excellent elasticity, weather resistance, and flame retardancy-ideal for high-performance sealing and insulation.

International Standards & Certifications

Dachuang Kehua is committed to delivering globally certified quality:

• Management Systems: ISO 9001 and IATF 16949 (automotive standard)

• Product Certifications: UL/CUL UL157, EU RoHS 2.0, REACH compliance

• Third-Party Testing: Comprehensive validation through SGS and other international labs

Tailored Solutions for Key Industries

Through deep material expertise and customization capabilities, Dachuang Kehua provides targeted solutions for critical industries such as:

• New Energy Vehicles (NEVs)

• Energy Storage Systems

• 5G Communications

• Aerospace and Defense

Applications include thermal management, sealing, vibration damping, fire protection, and electromagnetic shielding.

Innovative Product Portfolio

Foamed Silicone

• DC800 Series: Low, medium, and high-density options for IP68 sealing, shock absorption, acoustic insulation, and extreme temperature tolerance (-55°C to 200°C)

• DC900 Series: Rigid foams offering structure and durability under load

Thermal Conductive Materials

• DC10 Series: Thermal pads for lightweight and efficient battery heat dissipation

• DC21 Series: Thermal potting compounds for electronic encapsulation

Fireproof Materials

• DC400 Series: Ceramic-forming silicone rubber for fire containment and thermal runaway protection

Specialty Composites

• DC600 Series: Integrates foamed silicone and PTFE for superior chemical resistance and corrosion protection

Key Application Areas

• New Energy Vehicles (NEVs):
  Battery PACK sealing (IP68), cooling plate support, cell cushioning, and waterproofing for charging stations

• Energy Storage Systems:
  Liquid-cooled cabinet sealing (IP67) and fireproof ceramic silicone insulation

• 5G Communication Equipment:
  Structural housing seals, EMI shielding, and long-term weather resistance

• Construction & Industrial Use:
  Photovoltaic inverter gaskets (IP67, UL94 V-0), steel structure sealing, and environmental barrier solutions

R&D and Quality Assurance

Advanced Testing Capabilities

The company operates more than 30 testing protocols across:

• Mechanical strength

• Weather and aging resistance

• Electrical insulation

• Flammability and salt spray exposure

Equipment includes universal tensile testers, thermal conductivity meters, and programmable environmental chambers.

Automated Manufacturing Excellence

Fully automated production lines-covering mixing, vulcanization, cutting, and lamination-ensure precision, efficiency, and consistent product quality across all product classes.

Market Reach & Strategic Partnerships

Dachuang Kehua is a trusted material partner for global leaders in:

• New energy vehicles

• Energy storage

• Rail transit

• Consumer electronics

Notable clients include CATL, BYD, and Huawei, all relying on Dachuang Kehua for dependable, high-performance silicone material solutions.