Products

NI K96 (U-RING SINGLE ACTIONSEAL ROD SEAL)

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NI-K96 is a single acting rod seal designed to have special geometry and inner lip shorter than the outer lip.

PRODUCT ADVANTAGES

  • ​Superior static and dynamic sealing effect
  • Able to work on hard conditions.
  • Easy assembly into closed grooves
  • Very good static tightness due to the geometry.
  • Can go up to a pressure of 250 bar with using a bach-up (BUR) ring

APPLICATION
Construction machinery , fork-lift trucks , injection moulding machines , agricultural machinery , loading platforms and standard cylinders

INSTALLATION
Easily assembled into closed grooves according to the minimum diameter values that are given in the below table. Open grooves or special assembly tools should be used for the values that are outside this table. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the NI-K96 must be oiled with system oil.

MINUMUM DIAMETER VALUES FOR CLOSED TYPE OF GROOVES
(D-d)/2 (mm) 4 5 6 7.7 10 12.5 15
dmin (mm) 25 30 40 50 80 100 105

NOTES: NI-K96 can be produced on requests in FPM material for special applications that requires high temperatures. It is generally used with a 2mm pom bu (BUR) ring in construction machinery. The permissble sealing gap values of the NI-K96 rod seal is given in the below table.

 

PERMISSIBLE SEALING GAP   Smax(mm)
t=(D-d)/2 50 Bar 100 Bar 150 Bar
t≤5 0.40 0.20 0.10
t>5 0.45 0.25 0.15

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 90 SH

 

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 ≤150 Bar ≤150 Bar ≤150 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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# Vota code Name Application Material Pressure
(bar)		 Temperature °C Sliding Speed (m/s)
hydraulic-seals-rod-seal/ni-k96 NI/K96 NI K96 (U-RING SINGLE ACTIONSEAL ROD SEAL) ROD/AXLE NBR 90SH 150 -30°C +105 °C 0.5
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