TESCO PU is a two piece double acting sealing set which consists of a special design polyurethane seal ring and a NBR elastomer ring as energizer.
Construction machinery, agricultural machinery, Injection molding machines, general industrial applications
Easily assembled on one-piece piston. 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: It is recommended choosing suitable material and quantity for guiding element regarding the purpose of application
NOTES: the permissible sealing gap values of TESCO piston seal is given in the below table.
|PERMISSIBLE SEALING GAP Smax (mm)|
|B (mm)||150 Bar||250 Bar||400 Bar|
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 95 SH / NBR 80 SH|
|MEDIA||Mineral oils(DIN 51524)||HFA and HFB||HFC|
|TEMPERATURE||-30°C +100°C||+5°C +50°C||-30°C +40°C|
|PRESSURE||≤250 Bar||≤250 Bar||≤250 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.
|Sliding Surface ØD||≤0.4 μm||≤4 μm|
|Groove Base Ød||≤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.
CB = Custom build (price on request)
* = Stock item
Stock = 0 (and not a Stock* or CB product) -> minimum item value € 10.00