Dynapac Drum Mount Our rubber Dynapac drum mount or sandwich mounts are made from a high-quality rubber vulcanized to a steel plate; we stock a wide range of isolator buffers to suit most rollers. Complete your rubber buffer with a bolt kit to suit that roller you are replacing the drum mounts on. Dynapac Part Number 4812111046 4812119342 To Suit Dynapac CA1800D CA2500D CA2500PD CA2800D CA2800PD CA3500D CA3500PD CA3600D CA3600PD CA4000D CA4000PD CA4600D CA5000D CA5500PD CA6000D CA6000PD