There are many varieties of gaskets, according to the structure
of the theme information is divided into non-metallic, semi-metal and
metal gasket three categories.
Nonmetallic gasket Non-metallic
gasket soft, corrosion-resistant, cheap, but the temperature of the
copper sets of manufacturers to withstand poor pressure function. Used for temperature in the temperature of the medium, low pressure vessel or pipe flange seal. Non-metallic gaskets include rubber mats, asbestos mats,
asbestos rubber copper pad pads, flexible graphite mats and
polytetrafluoroethylene pads.
2. Semi-metal gasket, also known as metal composite gasket. Non-metallic
materials, although with good flexibility, compression and bolt valve
copper sleeve load to a low level of strength. But
it is mainly determined that the intensity is not high, poor
resilience, not suitable for high pressure and high temperature
occasions. So the combination of metal materials, high strength, good resilience. Full of high temperature characteristics. Constitute a spacer which is constructed in combination. That is, semi-metal gasket. Semi-metal gaskets are mainly metal coated gaskets, metal around
the gasket, metal corrugated fit pads, metal teeth fit pads and so on.
Metal gasket. In
the high temperature and high pressure and load cycle frequency and
other harsh operating conditions, a variety of metal materials is still
the preferred choice of gasket material, commonly used information are
copper, aluminum, low carbon steel, stainless steel, chromium nickel
alloy steel, titanium Monel Wait. In
order to reduce the bolt load and ensure a compact structure, in
addition to the metal flat pad as far as possible using narrow width, a
variety of cable touch characteristics of the ring pad structure is its
preferred way.
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