The function of the Parker Prädifa ULTRATHAN wiper ring A1 is to prevent dust, dirt, grains swarf from penetrating. This is achieved by a special design which largely prevents the developement of chamfers, protects the guiding parts and extends the working life of the seals.

Oversized diameters ensure a tight fit in the groove thus preventing the penetration of and dampness. This wiper ring profile A1 provides a technically accurate closure at the cylinder; no screwing and brackets are required. No close tolerance are necessary and no metal inserts. The corrosion which may occur with metal-cased wipers will be prevented. For the groove close tolerances are not required.

If minor quantities or other diameters are required, these may be cut from the next largest size having
the same cross-section (for further instruction please refer to the passage “Installation”)

Field of application:

ULTRATHAN® wiper rings profile Al are designed for axially operated rods in hydraulic cylinders.
plungers and rodguidances.

Working temperature:         — 35 to + 110 °C

Surface speed:                       ≤ 5 I m/s

Installation:

The ULTRATHAN® wiper ring profile Al can be snapped into an easy to produce housing. The wiper lip should not come into contact with piston rod eye or their connecting pieces. It is however recommended that the wiper lip be positioned outside the housing so that the dirt can fall freely away.