Parker Prädifa PTFE Rod Sealing Set ON

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The Parker Prädifa PTFE rod sealing set profile ON consists of a rod sealing ring and an 0-ring. They are combined as a single unit and are suitable for rods and plungers in hydraulic cylinders.

The advantages of these sealing sets are:

  • Assembly in closed grooves (for rod diameters of 30 mm and larger).
  • Short assembled length.
  • Low break-away friction without the tendency of stiction (stick-slip-effect), whereby even at lower speeds a constant movement is achievable.
  • Low wear and high extrusion resistance.
  • High-temperature resistance.
  • Compatibility with nearly all media due to higher chemical compatibility of the rod sealing ring and a large choice of 0-ring materials.

Field of application:

Working pressure:                   ≤ 400 bar **

Working temperature:         – 30 to +100 °C *

Surface speed:                           ≤ 4 m/s

 

These profiles are particularly suitable for rods in control cylinders, servo-assisted equipment, machine tools, quick-acting cylinders, and construction machinery. An optimal sealing performance will be obtained if the rod sealing set is used in tandem with a double-wiper.

*      With deviation from standard temperature range please consult factory for the adequate 0-ring compound.

**    In case of reduced extrusion gap up to 600 bar.

The Parker Praedifa profile ON is often fitted with the guide ring profile F3. If the wear range of this profile is fully utilized, the diameter d, has to be chosen from the information given with the guidance profile F3 (see chapter D). With increasing wear, the danger of extrusion into the clearance gap increases. Therefore we recommend using the diameter d,  from this page in case of operation under the extreme conditions given in the paragraph, »Field of application«.

Compounds:

Sealing rings: W5140, modif. PTFE + 40%

bronze 0-rings: N0674, NBR elastomer with approx. 70 Shore A.

For special requirements (pressure, temperature, speed, etc.) please contact our Consultancy Service, so that suitable materials and/or designs can be recommended.

d D L d1 Item number 
4 8,9 2,2 4,1 ON 0004 OZ801
5 9,9 2,2 5,1 ON 0005 OZ801
6 10,9 2,2 6,1 ON 0006 OZ801
7 11,9 2,2 7,1 ON 0007 OZ801
8 15,3 3,2 8,2 ON 0008 0X801
8 12,9 2,2 8,1 ON 1008 OZ801
10 17,3 3,2 10,2 ON 0010 0X801
10 14,9 2,2 10,1 ON 1010 OZ801
12 19,3 3,2 12,2 ON 0012 0X801
12 16,9 2,2 12,1 ON 1012 OZ801
14 21,3 3,2 14,2 ON 0014 0X801
14 18,9 2,2 14,1 ON 1014 OZ801
16 23,3 3,2 16,2 ON 1016 0X801
16 20,9 2,2 16,1 ON 2016 OZ801
18 25,3 3,2 18,2 ON 0018 0X801
18 22,9 2,2 18,1 ON 1018 OZ801
20 27,3 3,2 20,2 ON 1020 0X801
20 30,7 4,2 20,3 ON 2020 0X801
22 32,7 4,2 22,3 ON 0022 0X801
22 29,3 3,2 22,2 ON 1022 0X801
25 35,7 4,2 25,3 ON 0025 0X801
25 32,3 3,2 25,2 ON 1025 0X801
30 40,7 4,2 30,3 ON 0030 0X801
30 37,3 3,2 30,2 ON 1030 0X801
32 42,7 4,2 32,3 ON 0032 0X801
32 39,3 3,2 32,2 ON 1032 0X801
36 46,7 4,2 36,3 ON 0036 0X801
36 43,3 3,2 36,2 ON 1036 0X801
40 55,1 6,3 40,4 ON 0040 0X801
40 50,7 4,2 40,3 ON 1040 0X801
45 55,7 4,2 45,3 ON 1045 0X801
45 60,1 6,3 45,4 ON 0045 0X801
50 65,1 6,3 50,4 ON 0050 0X801
50 60,7 4,2 50,3 ON 1050 0X801
56 71,1 6,3 56,4 ON 0056 0X801
56 66,7 4,2 56,3 ON 1056 0X801
60 75,1 6,3 60,4 ON 0060 0X801
60 70,7 4,2 60,3 ON 1060 0X801
63 78,1 6,3 63,4 ON 0063 0X801
65 80,1 6,3 65,4 ON 0065 0X801
70 85,1 6,3 70,4 ON 0070 0X801
75 90,1 6,3 75,4 ON 0075 0X801
80 95,1 6,3 80,4 ON 0080 0X801
85 100,1 6,3 85,4 ON 0085 0X801
90 105,1 6,3 90,4 ON 0090 0X801
95 110,1 6,3 95,4 ON 0095 0X801
100 115,1 6,3 100,4 ON 0100 0X801
105 120,1 6,3 105,4 ON 0105 0X801
110 125,1 6,3 110,4 ON 0110 0X801
115 130,1 6,3 115,4 ON 0115 0X801
120 135,1 6,3 120,4 ON 0120 0X801
125 140,1 6,3 125,4 ON 0125 0X801
130 145,1 6,3 130,4 ON 0130 0X801
135 150,1 6,3 135,4 ON 0135 0X801
140 155,1 6,3 140,4 ON 0140 0X801
150 165,1 6,3 150,4 ON 0150 0X801
160 175,1 6,3 160,4 ON 0160 0X801
170 185,1 6,3 170,4 ON 0170 0X801
180 195,1 6,3 180,4 ON 0180 0X801
190 205,1 6,3 190,4 ON 0190 0X801
200 220,5 8,1 200,5 ON 0200 0X801
210 230,5 8,1 210,5 ON 0210 0X801
220 240,5 8,1 220,5 ON 0220 0X801
230 250,5 8,1 230,5 ON 0230 0X801
240 260,5 8.1 240,5 ON 0240 0X801
250 270,5 8.1 250,5 ON 0250 0X801
260 284 8.1 260,5 ON 0260 0X801
270 294 8.1 270,5 ON 0270 0X801
280 304 8.1 280,5 ON 0280 0X801
290 314 8.1 290,5 ON 0290 0X801
300 324 8.1 300,5 ON 0300 0X801
310 334 8.1 310,5 ON 0310 0X801
320 344 8.1 320,5 ON 0320 0X801
330 354 8,1 330,5 ON 0330 0X801
340 364 8.1 340,5 ON 0340 0X801
350 374 8.1 350,5 ON 0350 0X801
360 384 8,1 360.5 ON 0360 0X801
370 394 8.1 370,5 ON 0370 0X801
380 404 8,1 380.5 ON 0380 0X801
390 414 8.1 390,5 ON 0390 0X801
400 424 8,1 400,5 ON 0400 0X801
410 434 8.1 410,5 ON 0410 0X801
420 444 8.1 420.5 ON 0420 0X801
430 454 8.1 430,5 ON 0430 0X801
440 464 8.1 440.5 ON 0440 0X801
450 474 8.1 450,5 ON 0450 0X801
460 484 8.1 460.5 ON 0460 0X801
470 494 8.1 470,5 ON 0470 0X801
480 504 8,1 480.5 ON 0480 0X801
490 514 8.1 490,5 ON 0490 0X801
500 524 8.1 500,5 ON 0500 0X801

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