A 844

DESCRIPTION

Double (double-acting) wiper ring A 844 of high
abrasion-resistant polyurethane PU 361 was developed
for use in hydraulic cylinders of construction
and earthmoving machines.
This is the wiper ring preferably used in
in combination with the S 663 cuff, which is optimised
for the return transport of the ejected oil film.
A special feature is the additional outer cutting edge with "umbrella" function.
This has the effect of protecting the groove against ingress
dirt around the wiper ring and preventing corrosion.
of the internal parts of the hydraulic cylinder.

RANGE OF USE

Constant temperature -30 °C to +100 °C
Sliding speed up to 4.0 m/s

MEDIA

Wiper rings A 844 are suitable for fluids on
mineral oil based fluids. In aqueous oil emulsions
(HFA, HFB) the limits of use are from -20 °C to +40 °C.