CT3178 - A torque converter rubber O-Ring Seal for the Cast Iron Powerglide transmission for the years 1953 1954 1955 1956 1957 1958 1959 1960 1961 & 1962. This rubber o-ring torque converter seal fits all cast Iron Powerglide Transmissions 1953-1962. Please call us if you need the same seal for a 1950 1951 or 1952.