This standard describes a test method for determining the vulcanization characteristics of rubber compounds using a rotorless curemeter. The core principle involves placing the specimen in a sealed mold cavity and applying shear strain through oscillatory motion of the mold cavity at a set temperature. The instrument measures and records the torque variation resulting from the material's resistance to deformation in real time, thereby obtaining a complete vulcanization curve. Based on this curve, key parameters such as scorch time, optimum cure time, and minimum/maximum torque can be derived. These data are crucial for optimizing rubber formulations and determining production process conditions. Compared to traditional oscillating disk curemeters, the rotorless curemeter offers advantages in testing accuracy and repeatability due to its unique sealed mold cavity design.