A5R HPU
The wiper ring, profile A5R (HPU), has the function, to prevent infiltration of dirt, during the run-in motion of the piston rod. This will be assured through special shape forming. Therefore, formation of gouges on the running surface will be avoided and durability of the seals extended. The oversize within the diameter provides a tight fit inside the groove and ensures a form closure on the outside diameter of the wiper.
For installation, no special procedures, for example: ring nuts and holding plates or precision fits are necessary. Potential corrosion, which can occur by using wipers with a metal retainer between cage and cylinder-head, will be prevented.
Using a special resistant Polyurethane compound, high stiffness and excellent abrasion resistance are combinied. If in-between sizes or inch measurements are desired, these can be made at short notice.
APPLICATION RANGE
for axial moving rods on hydraulic piston rods.
| working temperature: | - 40 °C bis + 110 °C |
| sliding speed: | ≤ 2 m/s |
MATERIAL
Standard compound: Polyurethane with a hardness of approximately 93 Shore A.
MOUNTING INSTRUCTIONS
The wiper ring, profile A5R (HPU), can be easily mounted by kidney-shaped deformation. Avoid pressurization against the back of the ring. In- between sizes are easily manufactured out of a larger ring, with identical radius. For this purpose, a ring with a right angle-cut (90°) gets separated and reduced to the new perimeter, plus 2 to 3%, related to the diameter. Through this oversize, a crack-free joint will be assured. Therefor a adhesive sealing is not necessary.
In certain cases (high temperature, speed, or use of water, HFA-, HFBfluids a.s.o.) please contact with our application technology
Download | Detailed product information (PDF 665.7 kB)
