Parker Prädifa V1 O-Rings

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The Parker Prädifa Ultrathan® V1 O-ring is an alternative to conventional rubber elastomer O-rings.

Due to the extrusion resistance of the polyurethane compounds, there is no need to
use a back-up ring at higher or pulsating pressures. By eliminating the need for backup rings the required width of the groove is reduced.
Due to its high wear resistance, a polyurethane O-ring is also suitable for dynamic pneumatics applications. Very good results have been achieved, for instance, in
pneumatic valves for sealing pilot and main control pistons.

  • Robust seal profile for harshest operating conditions.
  • Extreme wear resistance.
  • Suitable for fully automatic installation.
  • Insensitive to pressure peaks.
  • High extrusion resistance.
  • Excellent media resistance in case of suitable compound selection.
  • Suitable compounds available for special requirements of the chemical process industry.
  • Suitable compounds available for special requirements of the food processing industry.
  • Installation in closed and undercut housings.
  • Can be used in existing O-ring grooves.
  • Additional sizes of machined products available on short notice.

Range of application

Range of application The Parker Praedifa Ultrathan® O-rings are used when the physical properties of other compounds are insufficient. Mainly for the sealing of cylinders, controls, and valves.

Operating pressure                                                                                          ≤ 600 bar 1)

Operating temperature

Hydraulics                                                                                                         -35 °C to +100 °C

In water, HFA and HFB fluids                                                                      -35 °C to +50 °C

Pneumatics                                                                                                        -35 °C to +80 °C

Sliding speed                                                                                                     ≤ 0.5 m/s

Media                                                                                                                  Hydraulic oils based on mineral oil, HFA, and HFB fluids

1) With reduced extrusion gap and suitable cross-section.

Compounds

The compound Ultrathan® P5008 is a Parker standard material based on polyurethane
with a Shore A hardness of approx. 93. Its main advantages in comparison with other
polyurethane materials currently available on the market are the increased heat resistance and the lower compression set.
For fluids containing water, we recommend our hydrolysis-resistant compounds
P5000, P5001, P5012, and P5070.

Installation

Due to the higher modulus of the polyurethane compounds, the housings are slightly
different from those of standard O-rings.
All edges should be rounded by at least R = 0.1.
In the case of special applications, please discuss your problems with our consultancy service.
Polyurethane O-rings show no tendency to twisting.

d S Item number  d S Item number 
1,45 0,9 V1 0145 P5008 27 2.5 V1 2575 P5008
1.78 1.7 V1 0067 P5008 27,3 2,4 V1 2605 P5008
2.5 1.2 V1 110 P5008 28 2 V1 2620 P5008
2.9 1.8 V1 0140 P5008 28 3 V1 2630 P5008
3 1.5 V1 0151 P5008 28 4 V1 2640 P5008
3.2 1.8 V1 0166 P5008 28,17 3,53 V1 2658 P5008
3.4 1.9 V1 0180 P5008 28.24 2.62 V1 2664 P5008
3.5 1.2 V1 0185 P5008 29.2 3 V1 2742 P5008
4 1.5 V1 0208 P5008 29.74 2.95 V1 2764 P5008
4 2 V1 0212 P5008 29.87 1.78 V1 2780 P5008
4 2,15 V1 0214 P5008 30 2 V1 3010 P5008
4.2 1.9 V1 0235 P5008 30 4 V1 3030 P5008
4.6 2 V1 0263 P5008 30 6 V1 3050 P5008
5 1.5 V1 0285 P5008 30.3 2.4 V1 3073 P5008
5 2 V1 0291 P5008 31.54 3.53 V1 3145 P5008
5 2.5 V1 0294 P5008 32 2 V1 3158 P5008
5.28 1.78 V1 0305 P5008 32 3 V1 3168 P5008
5.3 2.4 V1 0310 P5008 32 4 V1 3178 P5008
5.7 1.9 V1 0320 P5008 33 2 V1 3220 P5008
6 2 V1 0335 P5008 33 3.5 V1 3235 P5008
6.3 2.4 V1 0362 P5008 34.2 3 V1 3351 P5008
6.4 2 V1 0367 P5008 34.52 3.53 V1 3361 P5008
6.7 2 V1 0379 P5008 34.59 2.62 V1 3355 P5008
7 2 V1 0397 P5008 35 2 V1 3370 P5008
7 2.4 V1 0399 P5008 35 3 V1 3380 P5008
7.3 2.4 V1 0430 P5008 35.2 3 V1 3415 P5008
7.5 2 V1 0443 P5008 36 2 V1 3430 P5008
8 1.65 V1 0484 P5008 36 3.53 V1 3446 P5008
8 2 V1 0485 P5008 37 4 V1 3540 P5008
8 2.5 V1 0490 P5008 37.69 3.53 V1 3579 P5008
8,3 2,4 V1 0525 P5008 38 2 V1 3595 P5008
8,6 2,4 V1 0528 P5008 39 2 V1 3650 P5008
9 1.5 V1 0562 P5008 39.2 3 V1 3683 P5008
9 2 V1 0566 P5008 40 2 V1 4015 P5008
9.19 2.62 V1 0603 P5008 40.2 3 V1 4077 P5008
9.25 1.78 V1 0615 P5008 40.64 5.33 V1 4086 P5008
9.3 2.4 V1 0620 P5008 40,82 5,33 V1 4294 P5008
10 2 V1 1010 P5008 44 3 V1 4305 P5008
10 2.5 V1 1015 P5008 45 3 V1 4400 P5008
10 3 V1 1020 P5008 45 3,5 V1 4410 P5008
10.3 2.4 V1 1045 P5008 46.99 5.33 V1 4514 P5008
10.77 2.62 V1 1059 P5008 47 2 V1 4515 P5008
10.82 1.78 V1 1065 P5008 48.9 2.62 V1 4645 P5008
11 2 V1 1074 P5008 50 2 V1 5015 P5008
11 3 V1 1085 P5008 50 3 V1 5025 P5008
11.3 2.4 V1 1115 P5008 50.16 5.33 V1 5066 P5008
11.3 2.5 V1 1117 P5008 50.2 3 V1 5069 P5008
12 2 V1 1146 P5008 53.34 5.33 V1 5274 P5008
12 2.5 V1 1150 P5008 54 3 V1 5300 P5008
12 3 V1 1155 P5008 55 4 V1 5360 P5008
12.1 2.7 V1 1182 P5008 56 3 V1 5410 P5008
12.3 2.4 V1 1190 P5008 56 6 V1 5422 P5008
12.37 2.62 V1 1194 P5008 59 3.53 V1 5580 P5008
12.42 1.78 V1 1200 P5008 59.69 5.33 V1 5604 P5008
13 2 V1 1219 P5008 60 3 V1 6020 P5008
13 3 V1 1227 P5008 60 4 V1 6030 P5008
13.3 2.4 V1 1253 P5008 60 5 V1 6040 P5008
13.3 2.5 V1 1255 P5008 64 3 V1 6285 P5008
13.94 2.62 V1 1269 P5008 64.2 5.7 V1 6322 P5008
13,59 2,7 V1 1271 P5008 65 5 V1 6370 P5008
14 1.78 V1 1284 P5008 66 5.33 V1 6443 P5008
14 2 V1 1287 P5008 68 2 V1 6540 P5008
14 3 V1 1298 P5008 68 3.53 V1 6551 P5008
14.03 2.61 V1 1312 P5008 69,2 5,7 V1 6654 P5008
15 3 V1 1365 P5008 69.21 5.33 V1 6655 P5008
15.3 2.4 V1 1397 P5008 69.52 2.62 V1 6677 P5008
15.54 2.62 V1 1415 P5008 70 3 V1 7020 P5008
15.6 1.78 V1 1418 P5008 70 5 V1 7040 P5008
16 2 V1 1435 P5008 73 2 V1 7277 P5008
16.2 2 V1 1478 P5008 75 3 V1 7340 P5008
16.3 2.4 V1 1480 P5008 75.8 3.53 V1 7391 P5008
16.4 2 V1 1483 P5008 78 5 V1 7835 P5008
16.9 2.7 V1 1505 P5008 80 3 V1 8020 P5008
17 2 V1 1520 P5008 80 5 V1 8040 P5008
17 3 V1 1530 P5008 82.14 3.53 V1 8168 P5008
17.12 2.62 V1 1556 P5008 85 5 V1 8275 P5008
18 2 V1 1575 P5008 89.2 5.7 V1 8485 P5008
18.2 3 V1 1615 P5008 90 5 V1 9040 P5008
18.4 2.7 V1 1622 P5008 91.4 V1 9113 P5008
18.64 3.53 V1 1638 P5008 95 5 V1 9330 P5008
18.72 2.62 V1 1640 P5008 99.6 5.7 V1 9585 P5008
19 2 V1 1670 P5008 100 5.33 V1 A043 P5008
19 2.5 V1 1675 P5008 100.97 5.33 V1 A089 P5008
19.2 3 V1 1730 P5008 107,28 5,33 V1 A419 P5008
19.3 2.4 V1 1740 P5008 109,2 5,7 V1 A495 P5008
19.4 2.1 V1 1947 P5008 109,6 5,7 V1 A530 P5008
20 2 V1 2015 P5008 110 5 V1 B030 P5008
20 2.5 V1 2020 P5008 110.49 5.33 V1 B066 P5008
20 3 V1 2025 P5008 112 6 V1 B117 P5008
20,22 3,53 V1 2090 P5008 114.6 5.7 V1 B216 P5008
20,29 2,62 V1 2099 P5008 116.84 6.99 V1 B297 P5008
20.3 2.4 V1 2105 P5008 119.6 5.7 V1 B398 P5008
21 3.53 V1 2141 P5008 120 4 V1 C030 P5008
21.3 2.4 V1 2167 P5008 120 5 V1 C040 P5008
21.3 3.6 V1 2170 P5008 120,02 5,33 V1 C072 P5008
21.82 3.53 V1 2181 P5008 124.6 5.7 V1 C307 P5008
21.95 1.78 V1 2195 P5008 126,37 6,99 V1 C363 P5008
22 1.5 V1 2204 P5008 129.54 5.33 V1 C480 P5008
22 2 V1 2208 P5008 130 5.33 V1 D039 P5008
22.2 3 V1 2255 P5008 134.6 5.7 V1 D185 P5008
23 2.5 V1 2273 P5008 135 5 V1 D205 P5008
23 3 V1 2278 P5008 136,12 3,6 V1 D276 P5008
23.47 2.62 V1 2313 P5008 145 10 V1 E235 P5008
23,5 3,6 V1 2317 P5008 151.77 6.99 V1 F085 P5008
24 2 V1 2330 P5008 152 5 V1 F123 P5008
24 2.5 V1 2335 P5008 158 5.7 V1 F292 P5008
24.99 3.53 V1 2394 P5008 178 5.7 V1 H240 P5008
25 2 V1 2405 P5008 190 5 V1 K035 P5008
25 5 V1 2435 P5008 196,22 6,99 V1 K247 P5008
25.2 3 V1 2477 P5008 200 5 V1 L025 P5008
26 2 V1 2497 P5008 202.57 6.99 V1 L073 P5008
26.2 3 V1 2540 P5008 225 5 V1 M135 P5008

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Parker

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