BNI is a two piece single acting rod seal which consists of areinforced cotton fabric and nitrile rubber vulcanized togetherforming an integral sealing element and one thermoplastic back-up ring.
Mining equipment , after market , mobile hydraulics , presses andstandard cylinders..
BNI is used in open grooves., Also with dense grooves but then the assembly is difficult. If'm assembly tools are used the mounting area should not have any sharp edges. Before mounting the BNI must be lubricated with oil system.
The permissible sealing gap values of BNI rod seal is given in the below table. BNI can be produced in FABRIC/FPM with ptfe bu ring for special applications that require high temperatures..
|PERMISSIBLE SEALING GAP Smax(mm)|
|t=(D-d)/2||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: NBR 80 SH / NBR FABRIC|
|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||≤0.5 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-Ød||≤0.4 μm||≤3.2 μm|
|Groove Base ØDb-Ødp||≤1.8 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.
CB = Custom build (price on request)
* = Stock item
Stock = 0 (and not a Stock* or CB product) -> minimum item value € 10.00