High Strength Structural Silicone Sealant
High Strength Structural Silicone Sealant
High Strength Structural Silicone Sealant is a one-component, neutral curing, high-modulus silicone adhesive designed for demanding structural bonding applications in modern façade engineering.
It is specifically developed for structural glazing, curtain wall systems, and high-rise building envelopes, where long-term load resistance, weather durability, and safety performance are critical.
Unlike standard silicone sealants used for weatherproofing, this product is engineered for structural load transfer and permanent bonding performance between glass, metal, and coated façade materials.
Engineering Performance Overview
In curtain wall engineering, sealant failure can lead to:
Glass panel displacement
Air/water leakage
Structural safety risk
High maintenance cost
This structural silicone sealant is designed to solve these risks through:
High modulus strength for structural load bearing
Stable elasticity under thermal expansion
Long-term adhesion under UV and pollution exposure
Controlled stress distribution across joints
Technical Data Sheet
|
Property |
Value |
|
Type |
High strength neutral cure silicone |
|
Density |
1.30 ± 0.05 g/ml |
|
Skin time |
20–50 min |
|
Full cure |
2–3 mm / 24h |
|
Shore A hardness |
40–50 |
|
Tensile strength |
≥ 1.2 MPa |
|
Elongation |
250–300% |
|
Movement capability |
±20% – ±25% |
|
Temperature resistance |
-50°C to +150°C |
|
Application temperature |
+5°C to +40°C |
Key Features & Engineering Advantages
Long-Term Structural Durability
Formulated with 100% pure silicone polymers, ensuring:
Resistance to UV degradation
Anti-aging performance
No cracking or hardening over time
Structural Load Resistance
High tensile strength combined with high modulus allows:
Effective load transfer between glass and aluminum frames
Resistance to wind pressure in high-rise façades
Stable bonding under dynamic movement
Neutral Cure, Non-Corrosive System
Compatible with:
Low-E glass
Reflective glass
Aluminum composite panels (ACP)
Anodized aluminum & coated metals
Excellent Adhesion
Provides strong adhesion to common substrates:
Glass
Aluminum
Steel
Ceramic-coated surfaces
Seismic & Thermal Movement Resistance
Designed to absorb:
Thermal expansion & contraction cycles
Wind-induced building sway
Seismic movement stress
Engineering Comparison
|
Feature |
Standard Silicone Sealant |
Structural Silicone Sealant (This Product) |
|
Usage |
Weather sealing |
Structural bonding |
|
Strength |
Low–medium |
High modulus |
|
Load bearing |
No |
Yes |
|
Façade safety |
Limited |
High safety level |
|
Durability |
5–10 years |
20+ years |
|
Application |
Doors, windows |
Curtain wall, structural glazing |
Application Areas
Curtain Wall Structural Bonding:Used for bonding glass panels to aluminum frames in high-rise façade systems.
Structural Glazing Systems:Provides permanent metal-to-glass bonding in architectural glazing assemblies.
High-Rise Building Façades:Designed for towers exposed to strong wind loads and thermal stress.
Skylight & Canopy Systems:Ensures waterproof and structural sealing under dynamic environmental conditions.
ACP & Metal Cladding Systems:Suitable for heavy-duty exterior cladding bonding applications.
Installation Guidelines
To ensure structural safety performance:
Clean substrate thoroughly (dust, oil, moisture-free)
Apply masking tape for clean joint edges
Apply sealant continuously without air gaps
Tool within 10–15 minutes after application
Allow full curing before structural load is applied
Quality Standards & Certifications
This product is manufactured under strict international quality systems:
●ASTM C1184 – Structural Silicone Sealant Standard
●EN 15651 – European Sealant Standard
●ISO 9001:2015 – Quality Management System
●CE Marking – EU compliance
●RoHS compliant – Low VOC formulation
●Tensile strength
●Shore hardness
●Adhesion performance
●Batch traceability tracking
Packaging, Storage & Shelf Life
Packaging Options
●300ml Cartridge: 24 pcs/ctn
●590ml / 600ml Sausage: 20 pcs/ctn
●200L Drum: For automated production lines
Storage Conditions
Store in original unopened containers in a dry, shaded environment below 27°C.
Avoid direct sunlight and moisture exposure.
Shelf Life
12 months from manufacturing date.
B2B Freshness Guarantee
We operate a production-to-order system, ensuring:
●No long-term warehouse stock
●Shipment with 10–11 months remaining shelf life
●Stable batch consistency for large projects
Procurement & Business Support
We support global B2B customers with:
●OEM / Private label service
●Free sample testing for engineering validation
●Technical data support for project approval
●Bulk order & project-based pricing
●Fast export packaging for global shipping
FAQ
Q: What is the main difference from standard silicone sealant?
A: This product provides structural load-bearing strength, while standard sealants are only for weatherproofing.
Q: Can it be used in extreme climates?
A: Yes. It performs reliably from -50°C to +150°C.
Q: Is primer required?
A: In most cases, no primer is needed. However, adhesion testing is recommended for special coatings.
Q: Do you provide samples?
A: Yes, free samples are available for engineering evaluation.
Q: How do you ensure quality consistency?
A: Each production batch is tested for tensile strength, hardness, and adhesion performance with full traceability.
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