Spiral wound gasket is not all made of metal, it is a kind of semi-metal parts. I don't know if anyone can remember the water ballast in our house as early as possible? In the joint of pressure between the rod and the bucket will typically have such wafer, can prevent collisions between direct friction pressure rod and a bucket, greatly reduce the pressure of water damage, ensures that it can be used for a long time.
For the use of Spiral wound gasket range is very broad, since it itself is an auxiliary tool, so both in industry and in electricity or pharmaceutical industries, it is everywhere. Of course, the most common use is in industry. In terms of our life, Spiral wound gasket is generally appear most heat exchanger and a hand hole on these objects, for example, if in detail some, of course, such as our family of Spiral wound gasket valve is also exist.