Wholesale Excellent performance weatherproof neutral silicone sealant adhesive factory price

$0.80 - $1.50
Min. Order
1 Box
Company Information

Kaifeng Denver Technology Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
1 Year Paid Supplier Supplier Trade Assurance
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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: Double Components Adhesives
Main Raw Material: Silicone
Usage: Construction,Transportation
Brand Name: DENVER
Model Number: DF-802
Type: Two component type
Product name: Silicone Sealant Glue
Application: Glasses, building sealing
Shape: Pasty
Material: 100% Silicone Raw Material
Color: White and black
Packing: Pallet
Function: Sealing Gaps
Shelf life: 12 Months
Cure condition: Room Temperature Vulcanization
Packaging Detail: Soft sousage packing or cartridge packing. Loaded in carton box, 20 or 24PCS/Carton. Shipping LCL or FCL according to customer request
Product Description

Wholesale Excellent performance weatherproof neutral silicone sealant adhesive factory price

DF-821 one component weatherproof sealat is a one-component, high-elasticity, low-modulus (LM) silicone weather-resistant sealant for use in all forms of curtain wall construction, especially in high-rise building façades and complex structures form. It can be easily extruded at most ambient temperature and reacted with moisture in the air to form a durable silicone sealant. Due to its ability to withstand high and low temperature alternating deformation and deformation within its displacement capacity, it can be used with structural glues that meet the construction industry standard JG/T 475 or European standard ETAG 002 to provide 25 years of quality assurance.


Mainly applied in the waterproof, weatherproof sealin of glass curtain wall, aluminum curtain wall and other building curtain wall.

Application instructions

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 DF821 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.


Soft sousage packing or cartridge packing, 300ml. 400ml or customize 

Packed in carton box, 24pcs/carton or 20pcs/carton, or customize

OEM packing available

DF821 One-component silicone sealant for door and window sealing
Black paste
Component B: Black
Application Life
Take-free time
≤2 hours
Slump or flow
Agglutinated Time
≤48 hours
Curing rage
1~2mm per day
Max Tensile strength
Other color≥1.0MPa
Elongation at break
Transparent 300%
Other color 200%
Movement capacity
Transparent ±20mm
Other color ±20mm
Hardness(Shore A)
Other color≥20
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 mixed again and be dehydred  and vacummed

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

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 in metal drum. Protected by aluminum film paper which is insulated with light, water and air. Ensure the shelf life.

Packing & Delivery
Cartridge or sousage packing if carton box, normaly 24 unit/carton or 20 unit/carton
Shipping via LCL or FCL will be according to order quantity and customer request

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,