Building doors and windows sealing strip how to choose


Building door and window sealing strip is a kind of product that plays the role of shock absorption, waterproof, sound insulation, heat insulation, dustproof, and fixing. According to statistics, the energy consumption of real estate in China has accounted for the terminal energy consumption of the whole society.27.5, the energy lost through the gaps around lax doors and windows usually accounts for about 37-40% of the energy consumption of the building. Therefore, it is very important to improve the sealing performance between the sash frame and the glass, especially between the window frame and the window sash. Then, let's learn how to choose the sealing strip of the building doors and windows.

Practical performance test of building door and window sealing strip:

1. observe the surface of the rubber strip is smooth, no impurities, no bubbles, no sawtooth marks, and the hand is delicate and soft. High-filled soft PVC or EPDM sealing strip has poor elasticity, rough surface and large deformation.

2. The sealing strip of building doors and windows will not break when stretched by hand, and can be quickly restored to its original state when bent and released. The high-filled soft PVC sealing strip has poor strength, and it will crack when folded and break when pulled.


3. Use your nose to smell aromatic hydrocarbons without peculiar smell. Some PVC sealing strips not only use waste of different quality, but also add excessive fillers and low molecular weight aromatic olefin oil and complex composition of oil refining residue as a plasticizer substitute in the formula. The building door and window sealing strip has a big smell after leaving the factory. With the passage of time, the component volatilizes more, and the sealing strip becomes hard and brittle quickly, causing the rubber strip to shrink, loosen, fall off, crack and age easily, and lose its sealing effect. Due to the movement of aromatic oil and heavy oil, the profile will also turn yellow.

4. Practical inspection: the rubber strip is embedded between the profile and the glass, and the cross-sectional shape rationality and dimensional compatibility of the rubber strip are checked. Pushing the rubber strip is less labor, and the greater the force to pull out the glass, the better. Conditional, but also to the professional third-party testing institutions for watertight and air tightness test.

Many building door and window sealing strip manufacturers are worried about the use of filler, in order to pursue more production, our users generally buy in kilograms, in units of length, so virtually, the cost will increase.

What are the types of building doors and windows sealing strip?

Building door and window sealing strip can not be pulled too tight. The input length of the material is longer than the assembly length20-30mm. In order to close to the cut of the glass and the glass, the surface should be flat when embedded and installed, so that the force around the glass is uniform. At the corner, please cut off the inclined surface of the rubber strip and inject adhesive into the cut-off part to make it firmly bonded. When fixing the glass with sealant, please crush the glass with a rubber strip or rubber block, leaving a gap for injecting rubber. The depth of glue injection should not be less than 5mm. Before the rubber is cured, the glass should be kept from vibration. When installing the building door and window sealing strip, the surface should be flat and close to the glass gap to make the glass bear even force. Make a bevel cut at the corner, apply professional adhesive, and leave the rest.

Any questions!

Feel free to contact us.


Contact Phone:
+86 173 6808 6028


Company Address:

Lingkou Town, Danyang City, Jiangsu Province

Wanben car

Jiangsu Wanben specializes in the production of various door and window sealing strips for automobiles, construction machinery, construction, railways, etc. The products cover EPDM, PVC, CR, NBR, NR, TPV and other materials to design various seals like plastic and rubber. It can realize the full matching of automobiles and construction machinery vehicles and has independent export management rights. Its products are exported to more than ten countries and regions such as Asia, America and Europe.

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