scope:

This specification covers the materials and performance requirements for powertrain mount components with hydraulic damping (Hydro mount (HM)) used for powertrain vibration isolation in motor vehicles.

Material Description. Elastomer in Powertrain mounts.

Typical Applications. Powertrain mounts with hydraulic damping used for powertrain vibration isolation in motor vehicles.

Type A. Temperature Range -30 to +100°C continuous and +125°C excursion; tensile strength and permanent set on complete part tested after aging at +100°C. (See Appendix A, Table A3.) 

Type B. Temperature Range -30 to +100°C continuous and +125°C excursion - but tensile strength and permanent set on complete part tested after aging at +125°C. (See Appendix A, Table A3).

Type C. Drawing defined (e.g., using SAE J200 or ASTM D2000 line callout).

If no type of material is indicated, material of Type A is sufficient.