ASTM D 925
Standard Test Methods for Rubber Property - Staining of Surfaces (Contact, Migration, and Diffusion)
Please view the data sheet for more information and important exceptions.
Scope: These test methods cover techniques to evaluate three types of staining that rubber may cause when in contact with, or in proximity to, another surface that may be light colored. The test methods also describe how to qualitatively evaluate the degree of staining produced under the conditions of exposure to heat alone or heat and light.