Hydraulic and Pneumatic Seals...since 1975
DPS TPE is a four-part, double-acting piston seal for heavy demands, consisting of a TPE Profflring, a biasing member made of NBR, as well as two support rings of POM.
PRODUCT ADVANTAGES
APPLICATION:
Heavy duty cylinders , excavators , cranes , marine hydraulics and loading platforms.
INSTALLATION:
Easily assembled into one-piece piston because the back-up rings are been produced in split forms. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil.
NOTES: Please enter the values for the permissible sealing gap of DPS TPE heavy hydraulic piston seal is given in the table below
| PERMISSABLE SEALING GAP Smax (mm) | |
| Pressure (Bar) | 400 Bar |
| ≤350 mm | 0.45 |
| >350 mm | 0.25 |
Note: The largest sealing gap value occurring on the non-pressurized side of the seal does have a vital importance for the function of the seal and in this respect it is quite important to use the S value lower than the above indicated numbers.
| MATERIAL: TPE 5501 / NBR 80 SH / POM |
| OPERATING CONDITIONS | |||
| MEDIA | Mineral oils(DIN 51524) | HFA and HFB | HFC |
| TEMPERATURE | -30°C +105°C | +5°C +60°C | -30°C +60°C |
| PRESSURE | ≤400 Bar | ≤400 Bar | ≤400 Bar |
| SPEED | ≤0.8 m/sn | ≤0.8 m/sn | ≤0.8 m/sn |
Note: The above data are maximum values and cannot be used at the same time.
| SURFACE ROUGHNESS | Ra | Rmax |
| Sliding Surface ØD | ≤0.4 μm | ≤4.0 μm |
| Groove Base Ød | ≤1.6 μm | ≤6.3 μm |
| Groove Flanks B | ≤3.2 μm | ≤16 μm |
Note: It is recommended to have 50% to 90% of the working surface material contact area value.
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CB = Custom build (price on request)
* = Stock item
Stock = 0 (and not a Stock* or CB product) -> minimum item value € 20.00
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