The choice of doors and windows is very important in home decoration, because they give us a sense of security at home. Doors and windows are important, but door and window weather seal also play a key role. When choosing door and window rubber seals, we need to pay attention to the important functions of waterproofing, sealing and energy saving, and have functions such as sound insulation, dustproof, antifreeze, and warmth preservation. At the same time, they also need to have strong tensile strength, good elasticity, and better temperature resistance and aging resistance.

There are many types of door and window seals used in the market, generally made of PVC, modified PVC, EPDM, elastomer seals (including TPV, TPE), silicone and other materials, mainly used in wooden doors and windows, aluminum alloy doors and windows, plastic steel doors and windows and other architectural decorative doors and windows. The different performances of various door and window seals also directly determine their scope of application. We have specially summarized several commonly used materials that are most suitable for use in our families.

1. PVC weather seal strip

The material is cheap, corrosion-resistant, wear-resistant, combustion-resistant, and has high mechanical strength; the disadvantage is that it will gradually become hard and brittle with the increase of service life, lose elasticity, is not resistant to aging, and has poor weather resistance and low temperature performance. It is suitable for occasions where the light is not strong, the temperature changes are not large, and the climatic conditions are not harsh.

2. EPDM rubber weather seal strip

It has excellent performance, is resistant to ozone, high temperature and low temperature, chemical resistance, resistance to various polar solutes, and has a low relative density. The disadvantage is that it has a large expansion volume in general mineral oils and lubricating oils, and most of them are black products. The operating temperature range is -40 to +120℃, and it is generally recognized in the industry for its excellent comprehensive performance. It can be used in high temperature, cold, coastal, ultraviolet radiation strong areas and medium and high-rise buildings.

3. Thermoplastic elastomer seal strip(TPE, TPV)

It has the flexibility and elasticity of rubber, can be produced by plastic processing methods, does not require vulcanization, and waste can be recycled and reused. Thermoplastic elastomer is a material with a wide performance range, good heat resistance and cold resistance, low relative density, oil resistance and solvent resistance similar to neoprene rubber, but poor compression set resistance and wear resistance. It can meet the requirement various colors, and the operating temperature range is -40 to +150℃. It can be used in cold and medium and high-rise buildings.

4. Polyurethane foam weather seal strip

It has high resilience, less than 10% compression deformation, so it plays a good sealing role for doors and windows. PE film greatly extends the service life of the sealing strip, and it is rich in color and does not affect the appearance. Some weather seal strips are supported by PP skeletons, so that the seal strip will not shrink. The operating temperature range is -40℃~+90℃, and it can be used for various high-end door and window sealing.

5. Silicone rubber seal strip

It has outstanding high and low temperature resistance, ozone resistance and weather resistance; it has excellent hydrophobicity and appropriate air permeability; it has unparalleled insulation performance; it can meet the sanitation level required by food hygiene and meet the requirements of various colors. The disadvantage is that the mechanical strength is the worst among rubber materials and it is not oil-resistant. The operating temperature range is -60 to +300°C. It can be used in high temperature, cold, areas with strong ultraviolet radiation, and medium and high-rise buildings.

Door and window rubber seal strips look very inconspicuous, but they play a vital role in the family. Whether the seal is selected appropriately directly affects the overall sound insulation and warmth preservation effect of doors and windows.