Gilson/Rainin 25 mL/min. Stainless Steel, Titanium heads Piston Seal.

This seal is suitable for all applications, both wash and non-wash option, however because it contains a Stainless Steel expansion coil, the pumps should not be left idle for an extended period of time with halide containing buffers.  Rinse pumps with an alternative halide-free buffer or with pure water.