Loncool New Building Materials Co., Ltd.: Your Professional Silicone Sealant Manufacturer!

Founded in 2008, Loncool is a comprehensive adhesive enterprise integrating R&D, production, and sales, specializing in the innovation and manufacturing of Silicone sealant, Liquid nails, Silane modified polymer,PU foam sealant, Spray adhesive and other bonding solutions. With superior product performance and a wide range of applications, we provide high-adhesion, weather-resistant, and eco-safe adhesive solutions for the construction, home improvement, and related industries.

 
  • Neutral Cure Silicone
    Loncool neutral cure silicone multi-purpose one-part neutral cured silicone sealant. It reacts with atmospheric moisture to produce a silicone rubber seal.
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  • Low Modular Silicone Sealant
    Loncool low modular silicone sealant is neutral, permanently elastic, waterproof silicone sealant suitable for all building seals.
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  • Kitchen & Bath Silicone Sealant
    Loncool Kitchen & Bath Silicone Sealant is a premium, one-component, neutral-cure silicone sealant with excellent adhesion, weather resistance, and flexibility for a variety of commercial and residential applications neutral cure sealant.
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  • Neutral Cure Silicone Sealant
    Loncool neutral cure silicone sealant is a neutral-cure silicone sealant that is UV- and mildew-resistant, will not shrink or crack, and can be used between horizontal and vertical surfaces or any other changes in plane.
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  • Neutral Cure Silicone Adhesive
    Loncool neutral cure silicone adhesive is a high-quality, neutral, elastic, one-component silicone joint sealant.
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  • Acetic Silicone
    Loncool acetic silicone is a one-component, acidic, room-temperature-curing silicone sealant with high strength and modulus. It offers excellent resistance to weathering, aging, UV rays, ozone, water, and high and low-temperature
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  • Acetic Sealant
    Loncool acetic sealant is One-component, acidic room temperature curing silicone sealant with high strength and high modulus properties. Excellent weathering and aging resistance, UV resistance, ozone resistance, water resistance and high
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  • Construction Waterproof Sealant
    1. Single component, neutral curing, general purpose silicone glue;. 2. Excellent adhesion, non-corrosive to most building materials;. 3. Excellent weather resistance, aging resistance, UV resistance, and water resistance.
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  • Structural Silicone Sealant
    Loncool structural silicone sealant is a high-quality, neutral, elastic, one-component, hybrid polymer-based adhesive sealant for bonding and sealing interior and exterior window films.
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  • Structural Sealant
    Loncool structural sealant is one-component neutral silicone sealant offers fast curing, wide-ranging adhesion, excellent adhesion, superior weather resistance, ultra-low VOC, and environmental friendliness. It is particularly suitable for
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  • Neutral Silicone Structural Adhesive
    Loncool neutral silicone structural adhesive is a one-component neutral-curing silicone sealant designed for bonding applications such as glass and metal structures and stone.
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  • Silicone Sealant for Construction
    Loncool silicone sealant for construction is designed for general glazing and weather sealing in curtain walls and buildings, sealing gaps between walls and frames for doors and windows. For exterior and interior sealing in building
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Why choose us?

High quality

Committed to green and sustainable development, Loncool adheres to stringent environmental standards-from raw material selection to production processes-delivering high-performance, low-VOC, and non-toxic adhesive products.

Ultra-high production capacity

Loncool has two modern production bases covering an area of 100,000m², with an annual production capacity of more than 200,000 tons. The scale of nail glue production ranks first in China.

 

Advanced equipment

Advanced manufacturing equipment and an intelligent management system ensure consistent product quality and efficient supply, meeting diverse global market demands.

Over 300 employees

From R&D, production, sales, to service, we have a world-class professional team dedicated to providing customers with high-quality products.

 

 

Neutral Cure Silicone

 

Benefits of Silicone Sealant

Flexibility
Silicone sealants maintain their flexibility over time. They adapt to structural movements without cracking, which is crucial for commercial properties where buildings are subject to various stresses and strains.

 

Weather resistance
Being resistant to extreme weather conditions ensures that silicone sealants can endure both scorching summers and freezing winters without deteriorating. This resilience contributes to the long-term effectiveness of the sealant.

 

Durability
The durability of silicone sealants means they have a longer lifespan. This reduces the frequency of resealing, which saves on maintenance costs and minimizes disruptions to the normal operation of the commercial property.

 

Adhesion
Good adhesion properties enable silicone sealants to form a strong bond with various surfaces, ensuring a secure and effective seal. This is particularly important for commercial buildings with diverse materials and surfaces.

 

Waterproofing
Effective waterproofing is an especially critical benefit in commercial properties. Silicone sealants create a reliable barrier against water infiltration. This protects the building’s structure, prevents damage, and creates a comfortable and safe interior environment.

 

Application of Silicone Sealant

 

Construction and building
Silicone sealants are widely applied in the construction and building industry. They are mainly used for sealing windows, doors, and joints to prevent water infiltration. They are also instrumental in maintaining the structural integrity of buildings. Silicone sealants are highly resistant to UV rays, extreme temperatures, and aging. Making them ideal for both indoor and outdoor applications.

 

Automotive industry
In the automotive sector, silicone sealants are used for engine gasket sealing, preventing oil leaks. They are also used to seal headlights and windshields ensuring no water or air ingress. Their ability to withstand high temperatures, vibrations, and exposure to chemicals as well as their flexibility makes them suitable for diverse automotive applications.

 

Electronics
The electronics industry uses silicone sealants to protect components from moisture, dust, and other environmental hazards. They are commonly used for potting and encapsulating electronic parts to ensure long-term reliability in devices such as smartphones, computers, and industrial machinery.

The heat resistance and dielectric properties of silicone sealants make them an ideal choice for insulating and protecting electronic devices.

 

Medical devices
Silicone sealants are critical in the medical field especially in the manufacture and repair of medical devices. They are biocompatible and can be sterilized without losing their properties. This makes them suitable for sealing surgical instruments, implants, and other medical equipment. Their flexibility and durability ensure that devices are securely sealed while maintaining hygiene standards.

 

Aerospace
Aerospace is another industry that benefits from silicone sealants. They are ideal for sealing fuel systems, engines, and other aircraft components. The heat resistance, especially to extreme environments, makes silicone sealants critical for aerospace engineering and safety into flight performance.

 

 

Ordering Process

Set a strategy
Determine quantity, style and delivery time.

 

Sign contract
Provide efficient, high-quality services.

 

Production
Strict control and quality control at all levels.

 

Delivery
Delivery to customers according to contract time.

Kitchen & Bath Silicone Sealant

 

 

Packaging and Shipping

 

 

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FAQ

 

 

Q: Is silicone sealant the same as caulk?

A: No, silicone sealant and caulk are not the same. Caulk is typically a rigid material made from acrylic or latex, designed for sealing gaps with little or no movement and is often paintable. Silicone sealant is more flexible, waterproof, and resistant to temperature fluctuations, making it ideal for dynamic joints and wet areas.

Q: What are the key properties of silicone sealant?

A: Key properties include superior flexibility, excellent water and weather resistance, and high durability. It can withstand extreme temperature changes and UV rays without cracking or peeling. Many formulations also resist mold and mildew growth.

Q: How long does silicone sealant take to cure?

A: Silicone sealant typically cures within 24 hours under normal conditions (around 25°C and 50% relative humidity). However, the time can vary based on bead depth, temperature, and humidity. It forms a skin in about 5 to 30 minutes, but a full cure takes longer.

Q: How do you apply silicone sealant?

A: Start with a clean, dry surface, removing all old caulk or residue. Cut the nozzle of the cartridge at a 45-degree angle, load it into a caulk gun, and apply a smooth, even bead. Immediately "tool" or smooth the sealant with a wet finger or a specialized tool for a professional finish.

Q: What is "tooling" and "tooling time" for silicone?

A: Tooling is the process of smoothing and shaping the freshly applied bead of sealant for a neat finish. Tooling time refers to the short window of time after application but before the sealant begins to "skin over," typically within the first 5 to 10 minutes.

Q: What is the difference between acid-cure and neutral-cure silicone?

A: Acid-cure silicone releases acetic acid during curing, which creates a strong, vinegar-like smell and can corrode some sensitive materials like metal and stone. Neutral-cure silicone has a low odor and is non-corrosive, making it safer for a wider range of materials.

We're well-known as one of the leading silicone sealant manufacturers and suppliers in China. We warmly welcome you to buy high quality silicone sealant in stock here from our factory. For more information, contact us now.

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