Parker Prädifa Piston Sealing Set ZC

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The double-acting Parker Prädifa piston sealing set profile ZC consists of a one-part rubber-fabric seal provided with back-up rings to prevent extrusion. The dynamic surface of the seal is reinforced with a special fabric. Thus it retains favorably lubricating film between seal and cylinder wall, even after long standstill periods under high pressure. Due to this “grease store” the breakaway friction and the dynamic friction will be reduced and there will be considerably less wear at the dynamic surface of the seal.

Field of application:

Working pressure: ≤500 bar

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

Surface speed: ≤ 0,1 m/s

Mainly used for double-acting pistons in cylinders for hydraulic roof supports and for tunneling machines.

installation:

The sealing sets Parker Praedifa of the series ZC 00250 are for use as a one-piece piston. The Sealing sets of the series ZC 00254 require an open housing (divided piston). To avoid damaging care should be taken that the seals are not pulled over sharp edges during installation.

Compounds:

The standard compound for the sealing part is an NBR-based elastomer (Z5017) with fabric-reinforced
dynamic surface (SFRm-compound). The back-up rings are made of a 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 L D1 Item number
50 34 18 49,3 ZC 0050 00250
50 38 11 49,3 ZC 0052 00250
50 38 14,5 49,3 ZC 0053 00250
50 38 20,5 49,3 ZC 0055 00250
60 48 20,5 59,3 ZC 0061 00250
63 47 19,4 62,3 ZC 0067 00250
63 50 14,5 62,3 ZC 0063 00250
63 51 19,5 62,3 ZC 0066 00250
65 53 19,5 64,3 ZC 0065 00250
70 58 20,5 69,3 ZC 0070 00250
75 55 15,5 74,3 ZC 0075 00250
75 59 20 74,3 ZC 0076 00250
75 63 18,5 74,3 ZC 0077 00250
80 60 22 79,3 ZC 0082 00250
80 62 22,5 79,3 ZC 0080 00250
80 66 16,5 79,3 ZC 0083 00250
80 66 21 79,3 ZC 0081 00250
90 70 21,5 89,3 ZC 0090 00250
90 75 13 89,3 ZC 0094 00250
90 75 18 89,3 ZC 0091 00250
90 75 21 89,3 .’ ZC 0092 00250
90 76 16 89,3 ZC 0095 00250
90 76 21,5 89,3 ZC 0093 00250
95 80 13,5 94,3 ZC 0097 00250
100 75 22 99,3 ZC 0101 00250
100 82 22,5 99,3 ZC 0103 00250
100 86 22,5 99,3 ZC 102 00250
105 90 22,5 104,2 ZC 0106 00250
105 91 16,5 104,2 ZC 0105 00250
110 85 22 109,2 ZC 0110 00254
110 92 22.5 109,2 ZC 0110 00250
110 95 16 109,2 ZC 0112 00250
110 95 16 109,2 ZC 0113 00250
110 18 18 109,2 ZC 0111 00250
110 96 21,5 109,2 ZC 0114 00250
115 97 22,5 114,2 ZC 0116 00250
120 100 26 119,2 ZC 0120 00254
120 105 16 119,2 ZC 0120 00250
125 100 25 124,2 ZC 0125 00254
125 103 26,5 124,2 ZC 0126 00250
125 108 26,5 124,2 ZC 0130 00250
130 110 15,8 124,2 ZC 0127 00250
130 105 25 129,2 ZC 0128 00250
130 108 26,5 129,2 ZC 0129 00250
135 113 20,5 129,2 ZC 0131 00250
135 110 25 134,2 ZC 0146 00250
135 113 27 134,2 ZC 0135 00250
135 115 20,5 134,2 ZC 0139 00250
140 118 20,5 134,2 ZC 0136 00250
140 115 25,4 139,2 ZC 0144 00250
140 123 26,5 139,2 ZC 0141 00250
140 125 15 139,2 ZC 0140 00250
150 125 18 139,2 ZC 0142 00250
150 125 25 149,2 ZC 0150 00250
150 130 25,5 149,2 ZC 0151 00250
150 133 20 149,2 ZC 0152 00250
160 133 26,5 149,2 ZC 0153 00250
160 130 26 159,2 ZC 0163 00250
160 135 33 159,2 ZC 0161 00254
160 138 26,5 159,2 ZC 0160 00250
160 143 20 159,2 ZC 0161 00250
160 143 26,5 159,2 ZC 0164 00250
160 145 15 159,2 ZC 0164 00250
165 145 25,5 164,2 ZC 0165 00250
165 150 15 164,2 ZC 0166 00250
170 150 20 169,2 ZC 0172 00250
175 155 18 174,2 ZC 0174 00250
180 150 35,4 179,2 ZC 0179 00250
180 155 25,4 179,2 ZC 0180 00250
180 160 25 179,2 ZC 0183 00250
180 163 20 179,2 ZC 0181 00250
190 165 25 189,2 ZC 0190 00250
200 175 25,5 199,2 ZC 0200 00250
200 175 31 199,2 ZC 0202 00250
200 180 15 199,2 ZC 0204 00250
200 180 31,5 199,2 ZC 0207 00250
200 183 20 199,2 ZC 0205 00250
210 190 24,5 209,2 ZC 0210 00250
220 190 35 219,2 ZC 0220 00250
220 195 25,4 219,2 ZC 0224 00250
220 200 20 219,2 ZC 0222 00250
225 205 25 224,2 ZC 0225 00250
240 220 20 239,2 ZC 0240 00250
240 220 25 239,2 ZC 0241 00250
250 225 31 249,2 ZC 0249 00250
255 235 25,4 254,2 ZC 0255 00250
260 235 25 259,2 ZC 0261 00250
280 255 25,5 279,2 ZC 0280 00250
280 255 25,5 279,2 ZC 0280 00250
320 290 30 319,2 ZC 0320 00250

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Parker

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