GKD PISTON SEAL
The HUNGER compact slide ring seal type GKD is used to seal and guide pistons on double-acting hydraulic cylinders. In standard form it is suitable for use with all mineral oils.
The GKD consists of 4 parts, an elastic inner ring of PUR, a slide ring of abrasion-resistant PTFE-BronzeCompound and two bearing rings of a pressure-resistant POM-PTFE-Bronze-Compound.
| Materials | |||
| Elastic Ring | Slide Ring | Bearing Ring | |
| Standard | PUR | PTFEB-ronze | POM-Compound |
| Alternative | FKM, HLTR, H-NBR, EPDM | PTFE-Compounds | PTFE-Compounds, Engineering Plastics |
| Application Range | |||
| Pressure [bar] | Temperature Range [°C] | Sliding Speed [m/s] | |
| Standard | 360 [630*] | -35 … +100 | 1 |
| Design Hints Surface Finish | |||
| Surface Quality | Surface Hardness | ||
| Ra [µm] | Rt [µm] | [HRC] | |
| Sliding Surfaces | 0.1 – 0.3 | ≤ 1.5 | > 40 |
| Groove Base | 0.8 | ≤ 6.3 | |
| Groove Sides | 3.2 | ≤ 15 | |
SIZE
| D | d | b | d2 | d3 | a | c | f | e | Ref. Number |
| 40 | 26 | 30 | 32 | 36 | 3,5 | 15,5 | 7,25 | 7 | 10502 |
| 45 | 31 | 30 | 37 | 41 | 3 | 15,5 | 7,25 | 7 | 10506 |
| 50 | 34 | 32 | 42 | 46 | 3 | 20,5 | 5,8 | 7 | 10508 |
| 56 | 40 | 32 | 48 | 52 | 3 | 20,5 | 5,8 | 7 | 10510 |
| 60 | 44 | 32 | 52 | 56 | 3 | 20,5 | 5,8 | 7 | 23388 |
| 63 | 47 | 32 | 55 | 59 | 3 | 20,5 | 5,8 | 7 | 10512 |
| 65 | 49 | 32 | 57 | 61 | 3 | 20,5 | 5,8 | 7 | 10513 |
| 70 | 54 | 32 | 62 | 66 | 3 | 20,5 | 5,8 | 7 | 10514 |
| 75 | 59 | 32 | 67 | 71 | 3 | 20,5 | 5,8 | 7 | 10515 |
| 80 | 62 | 36 | 72 | 76 | 3 | 22,5 | 6,8 | 7 | 10517 |
| 85 | 67 | 36 | 77 | 81 | 3 | 22,5 | 6,8 | 7 | 10518 |
| 90 | 72 | 36 | 82 | 86 | 3 | 22,5 | 6,8 | 7 | 10520 |
| 95 | 77 | 36 | 87 | 91 | 3 | 22,5 | 6,8 | 7 | 10521 |
| 100 | 82 | 36 | 92 | 96 | 3 | 22,5 | 6,8 | 7 | 10522 |
| 105 | 87 | 36 | 97 | 101 | 3 | 22,5 | 6,8 | 10 | 10523 |
| 110 | 92 | 36 | 102 | 106 | 3 | 22,5 | 6,8 | 10 | 10524 |
| 115 | 97 | 36 | 107 | 111 | 3 | 22,5 | 6,8 | 10 | 10525 |
| 120 | 102 | 36 | 112 | 116 | 3 | 22,5 | 6,8 | 10 | 10526 |
| 125 | 103 | 43 | 115 | 121 | 4 | 26,5 | 8,3 | 10 | 10527 |
| 130 | 108 | 43 | 120 | 126 | 4 | 26,5 | 8,3 | 10 | 10528 |
| 135 | 113 | 43 | 125 | 131 | 4 | 26,5 | 8,3 | 10 | 10529 |
| 140 | 118 | 43 | 130 | 136 | 4 | 26,5 | 8,3 | 10 | 10530 |
| 145 | 123 | 43 | 135 | 141 | 4 | 26,5 | 8,3 | 10 | 10531 |
| 150 | 128 | 43 | 140 | 146 | 4 | 26,5 | 8,3 | 10 | 10532 |
| 155 | 133 | 43 | 145 | 151 | 4 | 26,5 | 8,3 | 10 | 10533 |
| 160 | 138 | 43 | 150 | 156 | 4 | 26,5 | 8,3 | 10 | 10534 |
| 170 | 148 | 48 | 160 | 166 | 6 | 26,5 | 10,8 | 10 | 10536 |
| 180 | 158 | 48 | 170 | 176 | 6 | 26,5 | 10,8 | 10 | 10537 |
| 190 | 165 | 48 | 180 | 186 | 4,5 | 31,5 | 8,3 | 10 | 10539 |
| 195 | 170 | 48 | 185 | 191 | 4,5 | 31,5 | 8,3 | 10 | 19704 |
| 200 | 175 | 48 | 190 | 196 | 4,5 | 31,5 | 8,3 | 10 | 10540 |
| 210 | 185 | 58 | 200 | 206 | 8 | 31,5 | 13,3 | 12 | 10541 |
| 220 | 195 | 58 | 210 | 216 | 8 | 31,5 | 13,3 | 12 | 10542 |
| 235 | 210 | 74 | 225 | 231 | 15 | 31,5 | 21,3 | 12 | 10544 |
| 240 | 215 | 74 | 230 | 236 | 15 | 31,5 | 21,3 | 12 | 10545 |
| 250 | 225 | 74 | 240 | 246 | 15 | 31,5 | 21,3 | 12 | 10547 |
| 265 | 240 | 74 | 255 | 261 | 15 | 31,5 | 21,3 | 12 | 10549 |
| 280 | 255 | 74 | 270 | 276 | 15 | 31,5 | 21,3 | 12 | 10552 |
| 290 | 265 | 74 | 280 | 286 | 15 | 31,5 | 21,3 | 12 | 10553 |