Filter, Pleated, Rubber Housing, DUO125, Pfeiffer, DUO, Part# 700074

This is a special replacement filter. It is made for the Pfeiffer DUO 125 vacuum pump. It also fits the Pfeiffer DUO 255M (Index C) model. The part number is 700074. It has two main parts: the filter material and the rubber housing around it. Together, they stop dirt from getting inside your pump.

his filter is not flat. It has many folds, like a small fan. We call this a “pleated” design. Why does this matter?

• More surface area: The folds give the filter a larger working area.

• More dirt holding: It can catch more dust before getting clogged.

• Better air flow: Air passes through easily even when the filter starts getting full.
  Flat filters clog up much faster. This pleated one lasts longer between changes