This tool is designed so the technician is able to efficiently remove and install the piston flange O-ring of the Sherwood SR series first stage.

By positioning the tool into the piston flange, the tool provides support during the removal of the inner O-ring with an O-ring pick.

By positioning the tool into the piston flange, the tool provides a back stop during the installation of the inner O-ring.

Made from acetal.

Regulator parts are not included.