At present, the common types of EPDM rubber strips in the domestic market are: ordinary EPDM rubber sealing strips, EPDM-S rubber strips, EPDM foam rubber strips, fire retardant EPDM rubber sealing strips, color EPDM rubber sealing strips.

1. Ordinary EPDM rubber seal strip: it is widely used in all kinds of building doors, Windows and curtain wall components, and forms extrusion deformation after the cavity, lip and other parts in the body structure design contact with other materials (glass, metal parts or non-metal parts, etc.), so as to produce resilience and play the role of sealing. This kind of sealing strip has a good heat resistance aging performance, but the compression deformation and tensile strength are relatively general, if with silicone rubber or light color window frame long-term contact, it will produce pollution, affect the appearance. Low price is its advantage.

2. Epdm-s rubber strip: by adjusting the filling system and curing system of the formula, this kind of rubber strip has obtained higher tensile strength and tear resistance, and can keep no color change, no precipitation, and no cracking in the long-term ultraviolet light test; It has excellent thermal aging performance and compression permanent deformation performance, and at the same time, it does not pollute window frame and silicone gel, and does not react with silicone gel. It is widely used in various curtain wall companies. Compared with ordinary EPDM strip, it has no pollution.

3. Epdm foam rubber strip: by adding chemical foaming agent to EPDM rubber, it is a kind of foam rubber strip with honeycomb structure in cross section after high temperature foaming and vulcanization and shaping. It has the following characteristics:

1) Low density. There are a large number of bubbles in the foam rubber strip, whose density is about 0.5~0.6g/ cm3, which is half of the ordinary rubber strip or even lower.

2) Excellent insulation. Because there are a lot of foam holes in the foam rubber strip, the thermal conductivity of the gas in the foam hole is much lower than that of solid rubber, so the thermal conductivity of the foam rubber strip is very low.

3) Sound insulation effect is good. The sound-proof effect of foamed rubber strip is achieved by absorbing the energy of sound waves so that the sound waves cannot be reflected and transmitted.

4) Higher than strength. Because the density of foamed rubber strip is low, the specific strength is naturally higher than that of non-foamed products. The mechanical strength of the foamed strip decreased with the increase of foamed multiple.

4, fire retardant epDM rubber seal: in epDM rubber added an appropriate amount of flame retardant, so that it is difficult to burn, do not fall off after combustion and can continue to prevent the spread of smoke and flame of the special seal. Widely used in all kinds of fire doors, fire Windows and fire partition.

5. Color EPDM rubber seal strip: as the name implies, epDM rubber is extruded and molded after color mixing to match various color window frame materials, making the architectural color more beautiful and harmonious.