Parker Prädifa Piston Sealing Set ZA

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Field of application:

Working pressure: ≤ 400 bar

Working temperature: HFA-, HFB, and HFC-fluids: + 5 to – 60 °C Mineral oil: -20 to + 100 °C

Surface speed: ≤ 0,1 m/s

These Parker Prädifa piston seals are mainly used for double-acting pistons in cylinders
for hydraulic roof supports and for tunneling ma-
chines.

Installation:

The Parker Praedifa sealing sets of the series ZA may be installed on one-piece pistons. To avoid damaging care should be taken that the seals are not pulled over sharp edges during installation.

Compounds:

The standard compound is an NBR-based special SFRs’-elastomer (N3580) with a hardness of approx. 85 Shore A. The back-up rings are made of polyacetal-based material (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 D1 L Item number
50 40 13,8 49,3 15 ZA 0050 00250
53 40 9 52,3 10 ZA 0053 00250
60 50 13,8 59,3 15 ZA 0060 00250
77 65 9 76,3 10 ZA 0077 00250
325 310 10,7 324,3 12 ZA 0325 00250

 

High-temperature version

D d H D1 L Item number 
40 32 5,7 39,3 6,3 ZA 9040 250
45 37 5,7 44,3 6,3 ZA 9045 00250
48 40 5,7 47,3 6.3 ZA 9048 00250
50 42 5,7 49,3 6,3 ZA 9050 00250
53 40 9 52,3 6,3 ZA 9053 00250
56 48 5,7 55,3 6,3 ZA 9056 00250
60 52 5,7 59,3 6.3 ZA 9060 00250
70 62 5,7 69,3 6,3 ZA 9070 00250
80 68 9 79,3 10 ZA 9080 00250
85 73 9 84,3 10 ZA 9085 00250
95 83 9 94,3 10 ZA 9095 00250
120 108 9 119,3 10 ZA 9121 00250
130 118 9 129,3 10 ZA 9130 00250
140 128 9 139,3 10 ZA 9140 00250
150 138 9 149,3 10 ZA 9150 00250
170 155 13 169,3 14 ZA 9170 00250
180 165 13 179,3 14 ZA 9180 00250
200 185 13 199,3 14 ZA 9200 00250
210 295 13 209,3 14 ZA 9210 00250
220 205 13 219,3 14 ZA 9220 00250

Merk

Parker

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