ASTM | Standard Practice for Rubber and Rubber Latices—Nomenclature
This practice covers a system of general classification or nomenclature for rubber and rubber latices. Rubbers in both dry and latex form shall be coded from the chemical composition of the polymer chain using the following classes: M, N, O, R, Q, T, U, and Z. The M shall be classified as follows: ACM, AEM, ANM, BIMSM, CM, CFM, CSM, EOM, EPDM, EPM, EVM, FEPM, FFKM, FKM, Type 1, Type 2, Type 3, Type 4, Type 5, and IM.
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