The
metal spirally-wound gasket adopts high-quality SUS**4 or SUS**6
("V" or "W"shape) metal strips, other alloy materials and some
flexible materials like graphite, asbestos, PTE and non-asbestos,
which are overlapped and wound spirally with each other. The metal
strips are fixed on the initial and terminal ends by means of spot
welding. The metal spirally-wound gasket has the best resilien ce
among the semi-metal hermetic gaskets. Its structural density can
be made subject to different locking forces. Also the internal and
external steel rings can be used to control its maximum compaction.
It's not demanding for the surface precision of the flange sealing
surface contacting the spirally-wound gasket. It's especially
applicable for such occasions as uneven load, slack joint,
periodical changes of temperature and pressure, impact
