Lubricant type II may be an ionic ethylene-methacrylic acid copolymer containing 10% methacrylic acid containing uniformly distributed therethrough a metal ion such as sodium (e.g., U.S. Pat. 3,338,379, Aug. 29, 1967, Rees, Example 1) as represented by such commercially available materials as Surlyn A1555 (trademark), specific gravity 0.93-0.96.