DTW-20X28X5-J2GPolyurethane snap-in wiper seal with a single lip, two additional static lips and notches on the inside edge
Hydraulic wiper seals prevent contaminants from entering a cylinder assembly and hydraulic system. DTW seals are polyurethane snap-in wiper seals. They have a single-lip design, with two additional radial and axial static seal lips that maintain the sealing contact and keep the wiper tight in the housing. Notches on the inside edge prevent the seals from trapping in pressure or being pushed out by pressure.
Dimensions
| d |
20 mm
|
Rod diameter |
|---|---|---|
| D |
28 mm
|
Housing groove diameter |
| D2 |
24 mm
|
Housing shoulder diameter |
| L |
5 mm
|
Housing groove width |
| S |
4 mm
|
Radial depth |
| R |
max. 0.3 mm
|
Groove radius |
| C |
min. 4.5 mm
|
Lead-in chamfer length on rod |
|
tol d Tolerance for rod diameter is determined by the rod seal.
|
||
| tol D |
0.13 mm
|
Upper limit deviation |
|---|---|---|
|
0 mm
|
Lower limit deviation | |
|
H11
|
Tolerance class for housing diameter | |
| tol D2 |
0 mm
|
Upper limit deviation |
|
0 mm
|
Lower limit deviation | |
| tol L |
0.2 mm
|
Upper limit deviation |
|
0 mm
|
Lower limit deviation | |
Materials
| Primary sealing element |
Polyurethane (TPU U-1003)
|
Operating conditions
| Speed |
max. 0.75 m/s
|
|
| Temperature |
min. -40 °C
|
|
| Temperature |
max. 120 °C
|
|
|
Maximum values of application parameters (e.g. pressure, speed, temperature) should not be applied continuously nor simultaneously.
|
||
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