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The Two-component Silicone Sealant Manufacturer!

Taizhou Qingkai Adhesive Co., Ltd. and our associated factory (Zhejiang Qingkai New Material Technology Co., Ltd.) are located in Taizhou, Zhejiang. which covers with convenient transportation access connecting with Ningbo Port. It is a high tech enterprise with a full industry chain integrating design, R & D, production and sales of silicone sealants, polyurethane foam agents, tile adhesives and other diversified building materials.

Two-component Silicone Structural Sealant
Precisely engineered for critical structural glazing in skyscrapers and seismic zones, our two-part silicone system delivers bulletproof adhesion with surgical control over cure profile. Certified
Two-component Silicone Hollow Glass Sealant
Precision-engineered for high-performance insulating glass units (IGUs), our two-component silicone system delivers military-grade gas retention and lifelong structural integrity for architectural

Why choose us

Advanced Manufacturing Capacity

Automated lines and large daily output ensure consistent quality, stable lead time, and reliable bulk supply for international projects.

Strong OEM / ODM Support

Professional R&D and flexible production systems allow formula, packaging, and branding customization for different markets and applications.

Quality Assurance

We are followed to Quality Management System requirements and our full product line conform to the C T C Weather resistant Sealant Grading requirements (25, 35, 50 levels) from China Building Materials Certification Center.

S/N	Test Item		Result Value
1	Appearance		Up to standard
2	Sagging	Vertical	0
2	Sagging	Horizontal	Non deforming
3	Potlife		≥30min
4	Surface drying time		≤1.2h
5	Elastic recovery rate		≥72%
6	Adhesive property	Under UV irradiation	No damage
7		After cold drawing/ hot pressing	No damage
8		After hot air/ water circulation	No damage

Features of Two-component Silicone Sealant

Wide temperature range
After curing, Two Component Silicone Sealant can adapt to an extremely wide temperature range, from -40℃ to 150℃. This means that whether in the cold winter or the hot summer, the sealant can maintain stable performance and will not crack or fail due to temperature changes. This feature makes it particularly suitable for use in extreme climatic conditions to ensure the long-term reliability of the sealing effect.

High-strength bonding performance
The A component of the sealant is white, and the B component is black, which is black after mixing. Its precise mixing ratio, with the mixing ratio of component A and component B being 190L:19L or 19L:300ml×7, ensures that the cured sealant has high-strength bonding performance. It can form a strong bond with a variety of materials (such as glass, metal, ceramics, concrete, etc.), and is suitable for various occasions that require high-strength sealing.

Excellent weather resistance and chemical resistance
Two Component Silicone Sealant has excellent weather resistance and can resist UV, ozone and atmospheric aging. At the same time, it also has good chemical resistance and can resist the erosion of a variety of chemicals, including acids, alkalis and solvents. This feature enables it to maintain stable performance in various harsh environments and extend its service life.

Compliance with international standards
The sealant complies with GB 16776-2005 standards and is compatible with international certifications such as FDA, CE and ROHS. This means that its composition and performance have been strictly tested and meet environmental protection and safety requirements, and users can use it with confidence.

Fast curing and easy operation
Two Component Silicone Sealant has a relatively short curing time and can form a stable sealing layer in a short time. Its operation is simple. Just mix component A and component B in proportion and apply them to the parts that need to be sealed. This fast curing and easy operation characteristics make it particularly suitable for use in projects with tight construction time.

Applications of Two-component Silicone Sealant

Electronics and electrical engineering

Protection of printed circuit boards against humidity, vibration and electric shock
Potting of sensors, relays and power components
Thermal and electrical insulation in transformers or LED modules

Automotive and mobility

Bonding and sealing of on-board electronic modules
Encapsulation of engine sensors or control boxes subjected to high temperatures
Flexible seal resistant to fluids and thermal shock in electric motors

Medical and precision equipment

Assembly of medical devices subject to hygienic and thermal stresses
Transparent or bio-compatible applications (ISO 10993-certified medical silicone adhesive)
Bonding lenses, membranes or flexible end caps to engineering plastics

Two-component Silicone Hollow Glass Sealant

Two-component Silicone Structural Sealant

Storage

Keep in the original sealed state: Store in a cool and dry place below 27 degrees Celsius. The shelf life is 9 months from the production date.
Compliance with standards: GB16776-2005
Transportation: Transport as non-dangerous goods.

Certifications

Ordering Process

Inquiryprice

Confirmation

We will provide options and finalize the design.

Payment

Upon confirmation, proceed with payment.

Sample Approval

Samples will be provided for your approval.

Production

Upon sample approval, we will begin production.

Quality Inspection

Each product undergoes a thorough quality inspection.

Shipping

We ensure timely and safe delivery.

After-sales service

Our team is always available to answer any after-sales inquiries.

Hard Packaging

Warranty: 9 months
Net volume: 300ml
Packaging quantity: 24 pcs per box

Aluminum Film Packaging

Warranty: 9 months
Net volume: 592ml
Packaging quantity: 20 pcs per box

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Q: What is the importance of preparing surfaces before application?

A: Properly preparing surfaces by ensuring they are clean, dry, and free from contaminants is crucial to achieve optimal adhesion and performance of the sealant.

Q: What is the recommended technique for mixing two-component silicone sealants?

A: Mix equal parts of the silicone base and the curing agent in a clean container, stirring thoroughly until a uniform color is achieved, typically for about two minutes.

Q: What should I consider when selecting a two-component silicone sealant?

A: Key factors include substrate compatibility, environmental conditions, specific project requirements, and the application method to ensure optimal performance and longevity.

Q: How should I apply two-component silicone sealants?

A: Use a caulking gun for precision and control, applying a steady, even bead along the joint. Masking tape can be used for clean edges, which should be removed after application.

Q: Advantages of two-component vs one-component silicone sealant?

A: Faster curing, less shrinkage, consistent quality, uniform strength—ideal for large-scale unitized curtain walls.

Q: Best practices for applying two-component structural silicone?

A: Clean/dry surfaces, use primers, professional dispensing to avoid bubbles, control curing conditions, and test adhesion on-site.

Q: Can I buy samples placing orders?

A: Yes.Please feel free to contact us.

Q: What is your lead time?

A: It depends on the order quantity and the season you place the order. Usually we can ship within 7-15 days for small quantity,and about 30 days for large quantity.

Q: What is your payment term?

A: T/T,Western Union,Alipay,MoneyGram,and Paypal.This is negotiable.

Q: What is the shipping method?

A: It could be shipped by sea,by air or by express(EMS,UPS,DHL,TNT,FEDEX and ect).Please confirm with us before placing orders.

As one of the most professional two-component silicone sealant manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy bulk cheap two-component silicone sealant from our factory. Contact us for more details.

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