Johnson Cutless Non-Metallic Sleeve Bearing. Features a dense structure of engineered reinforced thermoset plastic. Specially compounded nitrile rubber is securely bonded to the shell with all tolerances maintained for proper lubrication. Being non-corrosive and inherently resistant to all known chemicals, oil & grease, as well as being anti-electrolytic, these sleeve bearings are suited for installations wherever corrosion or electrolysis is a problem.