Merkel dust ring P9 type
1. Features
Especially for large diameter rod rubber lips mouth dust
2. Advantages
Such lips mouth dust ring having inwardly P9 type function U- shaped scraper ring, outside
Preventing dust and dirt intrusion scraping action.
■ Medium size can not mold / tool
■ dirt scraping action of strong
■ with excellent sealing action to prevent residual film at the piston rod extending rod surface.
■ wear
3. Material
Material Code Hardness
Nitrile rubber NBR 85 NBR B247 Shore A 85 degree
4. Operating conditions
Material 85 NBR B247
Temperature range ℃
Hydraulic oil HL, HLP -30 ... +100
HFA fluid +5 ... +60
HFB fluids +5 ... +60
HFC fluid -30 ... +60
HFD fluids -
Water +5 ... +100
HETG (rapeseed oil) -30 ... +80
HEES (synthetic ester) -30 ... +80
HEPG (ethylene glycol) -30 ... +60
Mineral oil -30 ... +100
Line speed m / s 1
5. cavity and machining standards
Surface machining precision
Valley height Ra Rmax
Sliding surface * *
Trench floor ≤1.6 um ≤6.3 um
Trench side ≤3.0 um ≤15.0 um
* Use as a dust ring, the roughness of the sliding surface should be installed seals adapt.
6. Install
The gap size
Nominal diameter Ø d D D1
16 ... 1000 mm H10 + 0.2
Tolerance ring diameter d is determined by the buffer
Installation and assembly
P9 dust ring can be pressed into the axial opening of the cavity. Carefully dust seal assembly is a prerequisite for correct function - see the technical manual.
Import angle
Chamfer length and angle, shall be used with the piston rod seals adapt.
7. Recommended Applications
Injection molding machines, presses, large fuel tanks
Recommended P9 wiper and OMS-MR or OMS-S for use. At the same time open the upper chamber a pressure relief hole, to avoid back pressure between the seal and the dust ring.
P9-type dust ring product size table
Model d * D * H / L Order No.
P9-200 * 220 * 18 / 10.2 24212749
P9-210 * 230 * 18 / 10.2 24224920
P9-220 * 240 * 18 / 10.2 24224959
P9-230 * 250 * 18 / 10.2 24224931
P9-240 * 260 * 18 / 10.2 24193882
P9-250 * 275 * 22.5 / 16 24175461
P9-260 * 285 * 22.5 / 16 24224921
P9-270 * 295 * 22.5 / 16 24213404
P9-280 * 305 * 22.5 / 16 24183892
P9-290 * 315 * 22.5 / 16 24224938
P9-300 * 325 * 22.5 / 16 24173146
P9-310 * 340 * 27/18 24224922
P9-320 * 350 * 27/18 24224937
P9-330 * 360 * 27/18 24146278
P9-340 * 370 * 27/18 24224930
P9-350 * 380 * 27/18 24147758
P9-360 * 390 * 27/18 24224923
P9-370 * 400 * 27/18 24224929
P9-380 * 410 * 27/18 24149422
P9-390 * 420 * 27/18 24224940
P9-400 * 430 * 27/18 24170712
P9-410 * 440 * 27/18 24224936
P9-420 * 450 * 27/18 24170651
P9-430 * 460 * 27/18 24178040
P9-440 * 470 * 27/18 24224924
P9-450 * 480 * 27/18 24224958
P9-460 * 490 * 27/18 24224942
P9-470 * 500 * 27/18 24224960
P9-480 * 510 * 27/18 24224941
P9-490 * 520 * 27/18 24224957
P9-500 * 530 * 27/18 24224925
Note: Dust ring P9 models and parameters table, detailed parameter information, please contact us!
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