Mechanical seal for the drive of a tracked vehicle

摘要

A slide ring seal for the running gear of continuous tracked vehicles and construction machinery is made of grey cast iron having lamellar graphite deposits in a pearlitic matrix structure of compsn. (wt.%): 2-4 C, 1.5-6 Si, 0.2-2.5 Mn, max. 2 P, max. 0.15 S, 0.2-4 Cr, 0.05-3 V, 0.05-4 Cu, and balance Fe. Also claimed are: (i) the use of the above cast iron in the manufacture of oil retainer rings or piston rings for internal combustion machines or valves; and (ii) the use of the above cast iron in the manufacture of actuator sleeves by centrifugal or stationary casting.