Parker Prädifa Piston Seal NG

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The Parker Prädifa piston sealing set profile NG is particularly suitable for double-acting pistons because of its low height.

Advantages of these sealing sets are:

  • Simple installation in split pistons.
  • Cylinder diameter dimensions according to ISO
    3320. Non-standard sizes are to be found on the following pages (see also the profiles N1 and N2).
  • Suitable for commercially available mineral oils;
    other compounds are also available for synthetic media, emulsions, and brake fluids.
  • With a rubber header ring, it can also be used as
    a rod seal.

 

Installation:

The Parker Praedifa piston sealing set profile NG is delivered, as a rule, with a flexible header ring. This header ring is fitted as a complete NBR-ring or open, cut to the required length. We reserve the right to supply plastic header rings in place of rubber. In special cases, a round cord may be fitted instead of header rings. A split piston is necessary for the assembly.

To avoid the free movement of the seal the groove length must correspond to the seal sets height. An axial preload suited to the particular application is allowable

 

Field of application:

Working pressure:                 ≤ 250 bar

Working temperature:         —40 to + 100 °C

Surface speed:                        ≤ 0,5 m/s

Preferably used for double-acting pistons in hydra cylinders.

 

Compounds:

“U”-cup:             NBR-based fabric reinforced rub 05015/05016.

Header ring:      NBR-elastomer (N3578) or polyacetal (POM-W5001).

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

D d H/L H1 Item number 
20 8 7,5 6 NG 0020 00360
22 10 7,5 6 NG 0022 00360
25 13 7,5 6 NG 0025 00360
28 16 7,5 6 NG 0028 00360
30 18 7,5 6 NG 0030 00360
32 20 7,5 6 NG 0032 00360
35 23 7,5 6 NG 0035 00360
40 25 9,5 7,5 NG 0040 00360
42 27 9,5 7,5 NG 0042 00360
50 35 9,5 7,5 NG 0050 00360
55 40 9,5 7,5 NG 0055 00360
56 41 9,5 7,5 NG 0058 00360
60 45 9,5 7,5 NG 0060 00360
63 48 9,5 7,5 NG 0063 00360
70 50 12,5 10 NG 0070 00360
75 55 12,5 10 NG 0075 00360
80 60 12,5 10 NG 0080 00360
85 65 12,5 10 NG 0085 00360
90 70 12,5 10 NG 0090 00360
100 80 12,5 10 NG 0100 00360
110 90 12,5 10 NG 0110 00360
115 95 12,5 10 NG 0115 00360
120 100 12,5 10 NG 0104 00360
125 100 15,5 12,5 NG 0125 00360
140 115 15,5 12,5 NG 0140 00360
150 120 19 15 NG 0150 00360
160 130 19 15 NG 0160 00360
170 140 19 15 NG 0170 00360
175 145 19 15 NG 0175 00360
180 150 19 15 NG 0180 00360
200 170 19 15 NG 0200 00360
220 190 19 15 NG 0220 00360
225 195 19 15 NG 0225 00360
250 220 19 15 NG 0250 00360
260 230 19 15 NG 0260 00360
300 270 19 15 NG 0300 00360

Merk

Parker

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