D3 - Intramark

D3 is a single acting rod seal designed to have inner lip shorter than the outer lip and additional sealing lip which improves the leakage behavior and, at the same time, prevents the entry of contaminations from the wiper side.

PRODUCT ADVANTAGES

High wear resistance
Superior sealing effect with the secondary lip
Secondary sealing lip provides extra protection against the ingress of dirt particles
Wide range of dimensions
Simple groove design
Easy assembly into closed grooves

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 sealing element must be oiled with system oil.

NOTES

The permissible sealing gap values of D3 is given below.

Material	Code
PU 94 SHR 1	PU9401

Surface roughness	Ra	Rmax
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)	150 Bar	250 Bar	400 Bar
t≤5	0.30	0.20	0.15
t>5	0.35	0.25	0.20

OPERATING CONTITIONS

Media	Mineral oils (DIN 51524)	HFA HFB	HFC
Temperature	-30 °C +100 °C	+5 °C +50 °C	-30 °C +40 °C
Pressure	≤400 bar	≤400bar	≤400 bar
Speed	≤0.5 m/sec	≤0.5 m/sec	≤0.5 m/sec