Uszczelnienie tłokowe

Note: The above data are maximum values and cannot be used at the same time.

SURFRACE ROUGHNESS	Ra	Rmax
Sliding Surface Ød	≤3.2 μm	≤2.0 μm
Groove Base ØD	≤1.6 μm	≤6.3 μm
Groove Flanks B	≤3.2 μm	≤15 μm

Note: It is recommended to have 50% to 90% of the working surface material contact area value.

INSTALLATION
We recommend using special assembly tool (See section; Hydraulic Sealing Elements General Installation Information) and to have open groove design for dimensions that are smaller than Ø 40 mm. 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 to use with minimum two piston guide rings in long stroke cylinders , minimum one guide ring in short stroke and under low radial loads. For special applications that require high temperatures or resistance to chemicals , piston seal is being manufactured with special mixture PTFE and FKM material. The permissible sealing gap values of K41 piston seal is given in the below table.

PERMISSIBLE SEALING GAP
B (mm)	S max (mm)
	150 Bar	250 Bar	400 Bar
3.2	0.4	0.25	0.15
4.2	0.40	0.25	0.20
6.3	0.5	0.30	0.25
8.1	0.6	0.35	0.25
9.5	0.70	0.35	0.30

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.