Select and buy method of door and window sealing strip:

1. Combustion method (can distinguish between thermoplastic body and rubber type adhesive strip)

A. Rubber rubber strips become ash after burning and cannot be drawn. Among them the ash is white, will be extinguished in the white paper after friction is still white for silicone rubber; The ash is black, will be extinguished in the white paper after friction is black for epdm or neoprene rubber; Ash is black, put out with the hand touch has sticky feel for natural rubber.

B. After burning, the thermoplastic elastic rubber strip can be pulled into filaments at the extinguishing place, in which EVA(ethylene - vinyl acetate copolymer) has a distinct acetic acid taste. PE(polyethylene), PP(polypentene) has a distinct candle burning flavor, sustainable combustion, and accompanied by low melting. PVC(polyvinyl chloride) rubber strip has the characteristics of extinguishing immediately after leaving the fire, and with black smoke and pungent smell.

C.t-pv thermoplastic vulcanized rubber: matte surface, melting and drawing, floating or suspended in water.

D.ebs thermoplastic elastomer seal strip: surface matt, with molten drawing, slowly sinking in water.

2. Tension measurement

Relatively speaking, as the sealant material should have a certain tensile strength, the standard requirements: strength ≥5Mpa. The same kind of material contains glue the higher the tension is better, generally speaking the service life will be relatively long, the sealing effect will be better.

3. Smell

Smell with the nose whether there is a peculiar smell, the normal PVC material has a little alcohol taste, almost can not smell the peculiar smell.

4. Wrap the seal as tightly as possible around the profile and leave it in high temperature (on the roof or in a sunny place) for a while.

See the contact surface of profile surface and seal whether appear corrupt discoloration, seal whether the dust on the surface of the dust yellow (there is oil is easy to absorb soil) oil, whether dirty hands.

5. Some of the cheaper seal filler will be a lot, so the surface will not be very bright, those very cheap appearance not bright is not desirable.