HY-739 Premium Acetic Silicone Sealant
HY-739 Premium Acetic Silicone Sealant is a one-part, acid-curing silicone sealant that cures at room temperature by reacting with atmospheric moisture to form a durable, permanently flexible silicone rubber. With excellent adhesion to glass and vitrified surfaces, fast tack-free time, and outstanding UV/weather resistance, HY-739 is ideal for sealing, bonding, mending, and DIY use in both residential and general construction applications.
Color Options
Clear / Black / Grey / White / Customized colors available
Packaging
Cartridge: 280ml / 300ml
Aluminum Foil Sausage: 500ml / 600ml
Shelf Life
Cartridge: 9–12 months
Aluminum Foil: 12 months
| Curing system | Acetic | Color | Clear |
| Density, g/cm³, approx. | 0.97 | Slump, mm, approx. | 0 |
| Application rate, g/min, approx. | 240 | Tack-free time, min, approx. | 5 |
| Curing rate, mm / 1 day, approx* | 3 | mm / 3 day, approx | 6.5 |
| mm / 7 day, approx | 10 | Operating temperature, ℃ | +5 to +40 |
| Working temperature range, ℃ | -30 to +120 | Elastic recovery, %, approx | 95 |
| Shore A hardness, approx | 16 | Joint movement capability, %, approx | 20 |
| Tensile strength, MPa, approx | 2.0 | Modulus at 100% elongation, MPa, approx | 0.43 |
| Elongation at break, %, approx | 600 | — | — |
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.
HY739
Is it suitable for use on metal or stone?
It works well on many surfaces, but acetic silicone may corrode sensitive metals and alkaline materials—compatibility testing is recommended.
Can it be used outdoors?
Yes. It has excellent weather and UV resistance, suitable for external applications.
How fast does it cure?
It becomes tack-free quickly at room temperature. Full cure typically occurs within 24–48 hours depending on joint depth and humidity.
What is HY-739 best used for?
It is ideal for glass sealing, DIY home repairs, bonding, and general building sealing.
Is it paintable after curing?
No. Like other silicones, it cannot be painted after curing.
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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