Versatile Weatherproof Silicone Sealing Strips for Doors and Windows

Product Description

Product Description

Advanced Silicone Rubber Sealing Strips for Superior Building Performance

Crafted with precision using high-temperature vulcanization (HTV) technology, our premium silicone rubber sealing strips redefine durability and performance in modern construction. Engineered to surpass conventional rubber and plastic seals, they deliver exceptional longevity, weather resistance, and functional reliability for demanding architectural applications.

Unmatched Advantages of Silicone Sealing Strips

Exceptional Temperature Tolerance - Remains flexible and effective in extreme conditions, from sub-zero cold to scorching heat (withstanding up to 200°C+).

Ultimate Weather & UV Resistance - Defies sun exposure, ozone, and harsh outdoor elements without cracking, drying, or losing integrity.

Long-Term Elasticity - Resists hardening, brittleness, and deformation, maintaining a perfect seal for extended periods.

Eco-Safe & Non-Toxic - Compliant with green building standards, free from harmful substances-ideal for sustainable and indoor projects.

Enhanced Insulation Properties - Improves energy efficiency by blocking heat transfer, noise pollution, and moisture infiltration.

Lightweight & Economical - High material yield minimizes waste and reduces overall installation expenses.

Custom-Engineered Profiles - Adaptable to intricate designs for flawless integration with diverse architectural styles.

Ideal Use Cases

• Curtain walls & structural glazing systems

• Aluminum, PVC, and wooden doors/windows

• Glass facades, skylights & interior partitions

• Energy-efficient & passive housing projects

• Residential, commercial & high-rise buildings

Designed to create an impenetrable barrier against air, water, dust, and noise, our silicone rubber sealing strips elevate building performance while enhancing indoor comfort and structural durability.

Upgrade to premium silicone sealing technology-where innovation meets enduring quality.

Premium Silicone Rubber Sealing Strips: The Ultimate Weatherproofing Solution

Unparalleled Performance Characteristics:

1. Extreme Temperature Adaptability

• Engineered to perform flawlessly in the harshest climates (-60°C to +200°C)

• Maintains perfect sealing integrity in arctic conditions and desert heat alike

• Ideal for cryogenic applications and high-temperature industrial environments

1. Advanced Weather Resistance

• UV-stabilized formulation prevents solar degradation

• Withstands ozone exposure, acid rain, and salt spray

• Certified for 25+ years outdoor performance without cracking or hardening

1. Exceptional Longevity

• Industry-leading compression set resistance (<10% after 10,000 hours)

• Maintains >90% original elasticity after 15 years of service

• Special anti-aging additives extend product lifespan

1. Eco-Conscious Formulation

• REACH and RoHS compliant

• Food-grade and medical-grade options available

• Zero VOC emissions for improved indoor air quality

1. Optimized Structural Properties

• High strength-to-weight ratio reduces structural load

• Precision extruded for consistent cross-sectional integrity

• Up to 40% material savings compared to conventional seals

1. Dynamic Performance Features

• 98% elastic recovery rate after compression

• Memory foam-like responsiveness to movement

• Accommodates up to 25% joint expansion/contraction

1. Smart Moisture Management

• Micro-porous structure prevents condensation buildup

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

• Integrated capillary break technology

1. Chemical Defense System

• Resistant to:

  • Industrial chemicals (pH 2-12)

  • Hydrocarbons and solvents

  • Marine environments

  • De-icing salts

1. Architectural Integration

• Custom extrusion capabilities for:

  • Complex geometric profiles

  • Color matching (Pantone system)

  • Texture variations

• Seamless transitions between materials

1. Safety Enhancements

• UL94 V-0 flame retardant options

• Low smoke toxicity versions

• Static dissipative formulations available

Technical Superiority:

• Tensile strength: 8-12 MPa

• Elongation at break: 400-600%

• Tear resistance: 25-40 kN/m

• Shore A hardness: 40-80 customizable

Certifications & Compliance:

• ISO 9001/14001 certified production

• ASTM C920 compliant

• EN 1366 fire resistance tested

• LEED contribution documentation available

Application-Specific Benefits:

• For curtain walls: Accommodates 3-dimensional movement

• In hospitals: Microbial growth resistant

• Data centers: EMI shielding versions

• Coastal buildings: Salt corrosion protection

This next-generation sealing technology represents the culmination of material science innovation, offering architects and engineers unprecedented design flexibility coupled with uncompromising performance standards. Our R&D team continuously develops advanced formulations to meet evolving construction challenges in sustainable urban development.

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 control

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 Log

Packaging & Shipping

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

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.

Situated in Qingshanhu Science and Technology City, Hangzhou - a key hub within China's National Science and Technology Innovation Corridor - the company thrives on technological innovation and deep industry expertise.

With a skilled team and strong collaborations with leading research institutions, Dachuang Kehua has established a comprehensive platform that integrates R&D, manufacturing, and sales. State-of-the-art laboratories and advanced facilities enable the company to continuously expand the applications and industrialization of silicone materials.

Core Strengths

Technological Leadership

• Proprietary production processes and cutting-edge equipment produce a wide range of products, including liquid and solid foamed silicone, thermal conductive materials, potting compounds, and more.

• The innovative DC800 Series Liquid Foamed Silicone technology is environmentally friendly, free of external foaming agents, and delivers excellent weather resistance, flame retardancy, and elasticity.

Industry-Leading Certifications

• Quality management systems: ISO9001, IATF16949 (automotive standard).

• International product certifications: UL/CUL UL157, EU RoHS 2.0, REACH, with comprehensive testing by SGS.

Tailored Solutions for Key Industries

Dachuang Kehua provides customized material solutions for demanding sectors such as new energy vehicles, energy storage, 5G communications, and aerospace - delivering reliable sealing, thermal management, cushioning, and fire protection.

Product Portfolio & Innovative Applications

Key Products

• Foamed Silicone:
  DC800 Series (low/medium/high density) and DC900 Series (rigid foam) offering IP68 sealing, shock absorption, sound insulation, and extreme temperature resistance (-55°C to 200°C).

• Thermal Conductive Materials:
  DC10 Series thermal pads and DC21 Series potting compounds for lightweight, efficient heat dissipation in battery systems.

• Fireproof Materials:
  DC400 Series ceramicized silicone rubber for thermal runaway mitigation and fire protection.

• Specialty Composites:
  DC600 Series combines foamed silicone and PTFE for exceptional chemical and corrosion resistance.

Industry Applications

• New Energy Vehicles:
  Power battery PACK sealing (IP68), liquid cooling plate supports, cell cushioning, and waterproof/dustproof solutions for charging stations.

• Energy Storage Systems:
  Liquid-cooled cabinet sealing (IP67) and ceramicized silicone for fireproofing and insulation.

• 5G Communications:
  Housing seals, EMI shielding, and superior aging resistance.

• Construction & Industrial:
  Steel structure seals, photovoltaic inverter gaskets (IP67, UL94 V-0 flame retardant).

R&D and Quality Assurance

Laboratory Capabilities

• Over 30 testing methods, including mechanical, aging, salt spray, flammability, and electrical performance tests.

• Advanced equipment such as universal tensile testers, thermal conductivity meters, and environmental chambers.

Manufacturing Excellence

• Fully automated production processes - from mixing and vulcanization to cutting and laminating - ensure consistency, efficiency, and superior product quality.

Market Reach & Partnerships

Dachuang Kehua proudly collaborates with global leaders in new energy vehicles, energy storage, rail transit, and consumer electronics - serving esteemed clients such as CATL, BYD, and Huawei with dependable, high-performance materials.

Certification