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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