Introduction of pu sealant

Introduction of pu sealant

Pu sealant, a commonly used adhesive in households, is composed of sodium silicate (Na2OmSiO2), acetic acid and organic silicone. Sodium silicate is easy to dissolve in water and is sticky. It is also called water glass in the south and soakine in the north.
Pu sealant is a material for bonding and sealing various glass and other substrates. There are two main categories: silicone rubber and polyurethane rubber (PU). Silicone rubber sealant is what we usually call glass glue, and it is divided into two types: acid and neutral (neutral glue is divided into: stone sealant, mold sealant, fireproof sealant, pipe sealant, etc.).

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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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A Brief Introduction To Mastic Sealants

A sealant is a form of material, which is used to seal gaps and holes to make something airtight or watertight.When you use sealant, you effectively form a seal, which prevents the movement of fluids and liquids.
Sealant is sometimes compared to caulking.
The main difference between building caulking and sealing is the flexibility of the seal. If you include mastic sealing in this equation sealants can not only seal but can also be used as an effective adhesive.Sealants tend to be made from much more flexible materials.

Application of Polyurethane Materials

Polyurethane material is a kind of multi-purpose synthetic resin with various product forms. Its product forms include: foam plastics, elastomers, coatings, adhesives, fibers, synthetic leather, waterproof materials and paving materials. It is widely used in transportation, construction, machinery, electronic equipment, furniture, food processing, textile and clothing, synthetic leather, printing, mining and metallurgy, petrochemical, water conservancy, national defense, sports, medical and health care and other fields.

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.

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