The functions of the Aston Seals SAD bi-directional rod wiper are:
This wiper is preferably used in conjunction with a rod seal with a hydrodynamic back-pumping function (i.e. XB).
We recommend in any case a pressure release hold be provided in front of the double wiper in order to avoid pressure build-up between seal and wiper.
The material used to produce this wiper is a polyurethane compound that ensures excellent properties in case of dry run, an increased wear-resistance and an extended service life due to good resistance against ozone and radiation caused by weather conditions.
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