Floating seal is used for the rotating components as
shown in the area framed by a dash line in Figwhich are
mounted on crawler-type construction machines such as
bulldozers and hydraulic excavators for the purpose to prevent
the internal oil leaking as well as foreign materials invading,
such as silt and sand. This is composed of the cast-iron sealrings and rubber O-rings and utilizes the pair of identically-shaped seal rings facing each otherduring use as shown in Fig.
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