HY-4300 Structural Silicone Sealant
HY-4300 Structural Silicone Sealant is a high-performance, one-component, neutral-curing silicone adhesive specifically developed for structural glazing and load-bearing sealing applications. It cures at room temperature to form a durable, high-strength elastomer with long-term flexibility and reliable adhesion.
Color Options
Clear / Black / Grey / White / Customized colors available
Packaging
Cartridge: 280ml / 300ml
Aluminum Foil Sausage: 500ml / 600ml
Shelf Life
Cartridge: 12 months
Aluminum Foil: 12 months
|
Color |
Black |
Application Temperature |
Apply between 4℃ and 35℃ |
|
Appearance |
Lump-free paste |
Odor |
Low odor |
|
Base |
Alkoxy Silicone |
Specific Gravity, g/cm³ |
1.4 |
|
Test |
Property |
Unit |
Result |
|
ASTM C 679 |
Tack-Free Time, 50%RH |
hours |
0.3 |
|
|
Curing Time at 25℃ and 50%RH |
days |
3 - 4 |
|
|
Full Adhesive |
days |
6 - 7 |
|
ASTM C 639 |
Flow, Sag or Slump |
Inches (mm) |
0.1(2.54) |
|
As Cured- after 21days at 25℃and 50%RH |
|||
|
ASTM D 2240 |
Durometer Hardness, Shore A |
points |
43 |
|
ASTM C 1248 Staining (granite, marble, lime-store, brick and concrete) |
None |
||
|
GB16776-2005 |
Heat aging, weight loss |
% |
3.5 |
|
GB16776-2005 |
Heat aging, cracking |
/ |
None |
|
GB16776-2005 |
Heat aging, powdering |
/ |
None |
|
GB16776-2005 |
Tensile strength, at 23℃ |
MPa |
1.13 |
|
GB16776-2005 |
Adhesive failure, at 23℃ |
% |
0 |
|
GB16776-2005 |
Elongation at maximum load at 23℃ |
% |
266 |
|
GB16776-2005 |
Modulus at 10% elongation at 23℃ |
MPa |
0.17 |
|
GB16776-2005 |
Modulus at 20% elongation at 23℃ |
MPa |
0.29 |
|
GB16776-2005 |
Modulus at 30% elongation at 23℃ |
MPa |
0.43 |
Product Functions
Application scenarios
Advantages and Competitiveness
Your Needs, Our Formulation
Customization Options
KINGDELI offers flexible customization services to meet your branding and packaging needs. Customers can choose custom cartridge designs, box packaging, and colors to align with their specific requirements. Our team ensures high-quality, professional packaging solutions that enhance brand recognition and market appeal.
End-to-End Custom Options
◤ Custom cartridge printing and branding
◤ Personalized box design and printing
◤ Customized sealant color
Enhance your product identity with Kingdeli customizable packaging solutions. Contact us to discuss your requirements and request a sample.
Frequently Asked Questions
Find quick answers to the most common questions about our sealant products — from application tips to storage and performance details.
HY-4300
What type of sealant is HY-4300?
HY-4300 is a one-component, high-modulus, neutral-cure structural silicone sealant designed for structural glazing and other load-bearing sealing applications.
What is the service temperature range after curing?
After full curing, HY-4300 maintains excellent adhesion and elasticity between -50°C and +250°C.
What substrates does HY-4300 adhere to?
It adheres well to glass, aluminum, coated metals, concrete, marble, and most common construction materials. Primer may be required for certain substrates depending on surface condition.
What is the shelf life of the product?
The shelf life is 12 months when stored in unopened original packaging under recommended storage conditions.
What are the main applications of HY-4300?
HY-4300 is used for:
✓Structural glazing of glass, marble, and aluminum curtain wall systems
✓Glass roofing and façade structural projects
✓Secondary sealing of insulating glass units (IGU)
✓Bonding and sealing of structural building components
Get Tailored Solutions for Your Adhesives and Sealants Needs
Looking for custom sealant solutions or OEM/ODM support?
Tell us your needs—our team will get back to you with tailored solutions designed to enhance your performance and competitiveness.
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Innovating with Integrity, Bonding the World
Since 1998, KINGDELI has delivered trusted, sustainable sealant solutions that connect industries and inspire progress worldwide.
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