What is door and window sealant

What is door and window sealant

Door and window sealants are mainly used to seal the joints between window frames and glass, and between window frames and internal and external walls. They play a key role in water tightness, air tightness, heat preservation, and sound insulation of doors and windows.

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Pre-sales Support

Pre-sales Support

1. Design consultation 2. Drawing review 3. Sealant recommendation 4. Substrate experiment: compatibility test, adhesion test, pollution test 5. Solution (sealant seam decoration)

In-sales Support

In-sales Support

1. Construction training 2. Process supervision 3. Special treatment 4. Rubber cutting spot check

After-sales Support

After-sales Support

1. Issuing quality assurance documents 2. Project return visits

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Jointas Chemical is listed company specialized in R&D, manufacture and sale of Eco-friendly silicone sealant, thermal paste and water based paints&coatings founded in 1989, China.

We Provide acrylic sealant,anti corrosion coatings, silicone adhesive, construction sealant, silicone caulk, house paint, interior paint, insulating glass sealant, industrial paint, gutter sealant, gap filler, grout sealant, construction adhesive bathroom sealant, waterborne coatings, water-based coating for steel structure,silicone structural, silicone sealant, ms sealant, pu sealant, pu foam, polyurethane sealant, anti corrosion paint, weather sealant, If you feel interested in them ,You can browse related products and initiate consultations on our website.

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Short-term seal

The caulking sealant is designed for a short time. It is usually the most effective in preventing airflow from entering small window cracks. This sealant usually comes in the form of a roll of tape, which can be cut to the required length for use until a more durable window sealant can be used.

Raw material for door and window sealant

The raw materials of door and window sealants include: silicone, polyurethane, polysulfide, acrylic, butyl, asphalt and oily resin modified products. Among them, silicone, polysulfide, and polyurethane three room temperature curing elastic sealants are the most widely used in my country, especially silicone sealants.

Window sealant storage requirements

According to the storage condition requirements in the relevant standards for door and window sealants, the nominal storage period of door and window sealants is below 27°C and under cool, dry and ventilated conditions. If the storage environment in actual use cannot meet the conditions specified in the standard, such as the ambient temperature is too high, the storage period of the door and window sealant may be shortened. Under this condition, the door and window sealant will cure slowly even if it does not exceed the nominal storage period. Phenomenon. Therefore, the storage period and storage environment of the door and window sealant must be confirmed.

Features of silicone sealant

Silicone glue is stable, has excellent UV resistance, ozone resistance, weathering resistance, temperature resistance, and single-component and two-component applications.

User Reviews

What users say about JOINTAS

The sealant has a fine texture and no bubbles, and the taste is very small. It is very convenient to use and dries very fast. The instructions are very detailed. The effect is good after using it.


The packaging of this product is very good, very strict, and the design is very scientific.


The product I bought is really good. The other ones I bought before have a lot of particles in it. They are not smooth to the touch. I don’t know how to use it, and the beauty stitches I bought make it. I really don’t have to say.


The effect is very good! The smell is very small, almost no smell during construction.


The quality is very good. I made it at home by myself. It's okay. The effect is good. The quality is indeed better than the price bought in other stores.


The smell is very small, the gel is translucent, it is smooth to use, and it dries quickly. The anti-mildew effect needs time to test.

Frequently Asked Question

Do you have any question?

If you need a versatile universal sealant with excellent adhesion, low odor, weather resistance and unparalleled sealing strength, we recommend Jointas windows sealant. It is very suitable for caulking windows and many other applications.

Door and window sealants generally require neutral glue for doors and windows, which are divided into sealants and structural glues. To be precise, they are divided into silicone acid glue, silicone weathering sealant, and silicone weathering structural glue.

The difference between sealing strip and sealant is as follows: The sealing strip is a product that seals a thing so that it is not easy to open, and plays the role of shock absorption, waterproof, sound insulation, heat insulation, dustproof, and fixation. The sealing strips are rubber, paper, metal, and plastic. , A variety of materials. Sealant is a kind of sealing material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain degree of adhesion. It is an adhesive used to fill the gaps in the configuration to play a sealing role.

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