ASTM D 1646 - 07 Standard Test Methods for Rubber - Viscosity, Stress Relaxation, and Pre-Vulcanization Characteristics (Mooney Viscometer)

American Society for Testing and Materials (ASTM). Current edition approved Nov. 1, 2007. Published November 2007. Originally
approved in 1959. Last previous edition approved in 2006 as D 1646 – 06. These test methods cover procedures for measuring a
property called Mooney viscosity. Mooney viscosity is defined as the shearing torque resisting rotation of a cylindrical metal
disk (or rotor) embedded in rubber within a cylindrical cavity. The dimensions of the shearing disk viscometer, test temperatures,
and procedures for determining Mooney viscosity are defined in these test methods.