D2 NBR is a single acting rod seal designed to have inner lip shorter than the outer lip in order to be used for rod applications.

PRODUCT ADVANTAGES

  • Superior static and dynamic sealing effect

  • Wide range of dimensions

  • Easy assembly into closed grooves

  • Simple groove design
  • Economical sealing solution

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 rod seal must be oiled with system oil.

NOTES

For special applications that require high temperatures, D2 can be produced in FKM material. The permissible sealing gap values of D2 is given below.

MaterialCode
NBR 90 SHORE ANBR9001
Surface roughnessRaRmax
Sliding Surface Ød≤0.4 μm≤3.2 μm
Groove Base ØD≤1.6 μm≤10 μm
Groove Flanks≤3.2 μm≤16 μm

Permissible sealing gap

S max (mm)
t=(D-d)/2 (mm)50 Bar100 Bar150 Bar
t≤50.400.200.10
t>50.450.250.15

OPERATING CONTITIONS

MediaMineral oils (DIN 51524)HFA HFBHFC
Temperature-30 °C
+105 °C		+5 °C
+60 °C		-30 °C
+60 °C
Pressure≤150 bar≤150bar≤150 bar
Speed≤0.5 m/sec≤0.5 m/sec≤0.5 m/sec

Minimum diameter values for closed type of grooves

(D-d)/2 (mm)4567.71012.515
d min (mm)2530405080100105

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