Wholesale supreme stretch and adhesion silicone sealant for building construction

$1.20 - $1.80
Min. Order
1 Acre
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Company Information

Kaifeng Denver Technology Co., Ltd.

CN Manufacturer, Trading Company
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Quick Details

Port: Shanghai, Tianjin, Qingdao
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram,Cash
Supply Ability: 25000 Ton/Tons per Year
CAS No.: 9006-00-6
Other Names: Dimethylpolysiloxane
Place of Origin: Henan China
Classification: Other Adhesives
Main Raw Material: Silicone
Usage: Construction,Transportation,Curtain wall
Brand Name: DENVER
Model Number: DF-801
Type: Two component type
Take-free time: &le; 2 hours
Application life: &ge; 30min
Temperature stability: -50~170℃
Movement capacity %: &plusmn;20%
Material: 100% Silicone Raw Material
Packing: Cartridge or sausage
Color: Customized Color
Elongation: &ge; 200%
Shelf life: 12 Months
Cure condition: Room Temperature Vulcanization
Packaging Detail: Cartridge or sausage packed in carton box. Cartridge:24pcs/carton Sausage: 20pcs/carton
Product Description
Title goes here.Wholesale supreme stretch and adhesion silicone sealant for building construction
DF-828 is a high modulus, two-part, RTV structural silicone sealant for glazing curtain wall.
It is RTV fast-cure neutral curing silicone sealant with unprimed adhesion to a wide range of coated and annealed glass.
The sealant cures to become a high-modulus silicone rubber suitable for insulating glass application.
The sealant contributes to the superior productivity and high reliability.
The sealant has excellent resistance to high&low temperature and air aging.
The sealant has no corrosion to the surface, no pollution to the environment


Mainly applied in high-rise and super high-rise building curtain wall, large-size glass panel curtain wall, structural assembly system of complex structure building curtain wall and manufacturing of insulating glass units.

Application instruction

NOTE: Before application, remove all impurities and contaminants such as grease, dust, water, frost, surface contamination, residual sealant, glazing attachments and protective coatings that remain in the joints and fittings.

1. Install the backing material, isolation spacers, spacer spacers and tapes as required. Masking tape should be used in the area connected to the seam to ensure the clean and beautiful appearance of the sealant.
2. For non-porous materials, it is usually not necessary to apply primer to have good adhesion. However, for some porous materials, primer may be needed to ensure good adhesion. It is recommended that before the project starts. Do a cohesive test.
3. Continuously squeeze and fill the DF828 silicone weatherproof sealant (the sealant can be constructed using pneumatic glue guns and other glue injection equipment). When using a pneumatic gun, adjust the operating pressure to prevent air bubbles from being generated during the injection.
4. When the surface of the sealant has not been skinned, the sealant is flattened on the backing material and the surface of the joint with appropriate force, and the surface of the sealant is smoothed.
5. After the leveling is completed, immediately remove the masking tape. Do not use liquids such as water, soapy water or alcohol to help level.


Cartridge: 300ml, 24pcs/carton
Sausage: 592ml, 20pcs/carton 
Customize packing, OEM lable and all acoording to customer request

DF828 Structural silicone sealant 



Black paste

Customize color



Vertical≤ 1mm
Horizontal no deformation
Application life
Take-free time
≤2 hours
Hardness(Shore A)


Tensile adhesion strength
Standard conditions
After water soak
After water-UV soak
23℃ Elongation rate under maximum
Detailed Images
Production Line

Raw material

Raw material is key to manufacture excelent products. We import raw material from Germany, Jpan. And most of our raw-material are supplied from top brand such as Dow corning, Wacker, Evonik, Cabot, FPC etc.

Premix and mix

Raw material will be pump up to the premixer. After premix it will be agitated and be dehydred  and vacummed

 at the same time. To make the silicone more delicate and smooth.

Finer grinding

After agitated, the sealant will be extruded to the storage tank, the sealant will flow via pipe to the twin screw extruded.

The sealant will be  finer grinded, before packing.

Extrusion and packaging

After all processing, the sealant is smooth and delicate enough and ready for packing. It will be packed via semi-auto packing machine, the sealant will be mixed with catalyst and packed in cartridge or soft sausage. 

Packing & Delivery

Carton packing

24pcs or 20pcs/carton according to products packing, ready for ship FCL or LCL


FCL quantity according to detail packing


What is the delivery time?

For two component type silicone sealant, such as DF801, DF802, DF803 they are all ready for ship. Other sealant delivery time will be 3~7 working days after order confirmed.

Is it possible for OEM packing?

OEM is welcomed, the packing will follow your standard

Can I have a trial order?

Yes, a trial order is necessary to ensure that our products can meet your requirements. However trial order is not free order. Please contact us for latest trial order policy.

Are you trading compay or factory?

We are verified factory by SGS and Alibaba. Our factory located in Kaifeng city,