Hydraulic and Pneumatic Seals...since 1975
VNA TE18 is a two piece single acting piston seal. This seal type is specially designed for heavy duty applications. When the coupling clearance between bore and piston cannot be reduced and the pressure is very high - above 250 bar - the PAE seal type, thanks to a strong anti-extrusion ring, is among the most appropriate of seal types.
PRODUCT ADVANTAGES:
APPLICATION:
Heavy duty cylinders , scrap cutters and hydraulic jacks.
INSTALLATION:
Easily mounted on a piece piston in one piece. If'm assembly tools are used the mounting area should not have any sharp edges. Before mounting the VNA TE18 must be lubricated with oil system.
| PERMISSIBLE SEALING GAP Smax(mm) | ||||
| t=(D-d)/2 | 100 Bar | 150 Bar | 250 Bar | 400 Bar |
| 1.0 | 0.80 | 0.70 | 0.60 | |
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: PU 92 SH / POM |
| OPERATING CONDITIONS | |||
| MEDIA | Mineral oils(DIN 51524) | HFA and HFB | HFC |
| TEMPERATURE | -30°C +100°C | +5°C +50°C | -30°C +40°C |
| PRESSURE | ≤400 Bar | ≤400 Bar | ≤400 Bar |
| SPEED | ≤0.5 m/sn | ≤0.5 m/sn | ≤0.5 m/sn |
Note: The above data are maximum values and cannot be used at the same time.
| SURFACE ROUGHNESS | Ra | Rmax |
| Sliding Surface ØD-Ød | ≤0.4 μm | ≤3.2 μm |
| Groove Base ØDb-Ødp | ≤1.6 μm | ≤10 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 € 10.00
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