GD1000K-S PISTON SEAL
In addition to proven compact piston seal GD1000K and GKD Hunger offers a slim version GD1000K-S which is identical in construction to most of competitors piston seals with integrated bearing elements.
The seal kit combines a compact sealing and bearing function especially for shorter piston widths and can be used for already existing groove designs. Standard version of GD1000K-S is a double acting, 6 part piston seal consisting of two L-rings, two bearing elements , one elastomer energizer and a PTFE-compound slide ring which can easily be pulled and assembled over the piston.
Both L-rings protect the slide ring from gap extrusion even at higher pressure grades, the low friction PTFEcompound slide ring enables smooth, stick-slip free piston movement. Listed dimensions are equipped with same wear resistant and reliable standard materials like GD1000K – these can be modified and adapted to all kinds of requirements of the hydraulic cylinder.
| Materials | ||||
| Elastic Ring | Slide Ring | Support Ring | Bearing Ring | |
| Standard | NBR | PTFEBronze | TPE, POM, PA | POM-Compound, POM, PA |
| Alternative | Niro | FKM, NBR-TT, PTFECompounds, Engineering Plastics | Stainless Steel | |
| Application Range | ||||
| Pressure [bar] | Temperature Range [°C] | Sliding Speed [m/s] | Fluid | |
| Standard | 360 [500*] | -30 … +120 | 1 | StandardHydraulic Oils Oil – Water Water – Glycol** |
| 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 | L1 | d2 | d3 | L2 | e | Ref. Number |
| 40 | 26 | 15,5 | 36 | 39 | 2,6 | 10 | 407211 |
| 45 | 31 | 15,5 | 41 | 44 | 2,6 | 10 | 407213 |
| 50 | 34 | 20,5 | 46 | 49 | 3,1 | 10 | 407215 |
| 55 | 39 | 20,5 | 51 | 54 | 3,1 | 10 | 407217 |
| 56 | 40 | 20,5 | 52 | 55 | 3,1 | 10 | 407219 |
| 60 | 44 | 20,5 | 56 | 59 | 3,1 | 10 | 407221 |
| 63 | 47 | 20,5 | 59 | 62 | 3,1 | 10 | 407223 |
| 65 | 49 | 20,5 | 61 | 64 | 3,1 | 10 | 407225 |
| 70 | 54 | 20,5 | 66 | 69 | 3,1 | 10 | 407227 |
| 75 | 59 | 20,5 | 71 | 74 | 3,1 | 10 | 407229 |
| 80 | 62 | 22,5 | 76 | 79 | 3,6 | 10 | 407231 |
| 90 | 72 | 22,5 | 86 | 89 | 3,6 | 10 | 407233 |
| 100 | 82 | 22,5 | 96 | 99 | 3,6 | 10 | 407243 |
| 110 | 92 | 22,5 | 106 | 109 | 3,6 | 10 | 407245 |
| 115 | 97 | 22,5 | 111 | 114 | 3,6 | 10 | 407247 |
| 125 | 103 | 26,5 | 121 | 124 | 5,1 | 10 | 407249 |
| 140 | 118 | 26,5 | 136 | 139 | 5,1 | 10 | 407253 |
| 150 | 128 | 26,5 | 146 | 149 | 5,1 | 10 | 407255 |
| 160 | 138 | 26,5 | 156 | 159 | 5,1 | 10 | 407257 |
| 170 | 148 | 26,5 | 166 | 169 | 5,1 | 10 | 407262 |
| 200 | 175 | 31,5 | 196 | 199 | 6,6 | 10 | 407269 |
| 225 | 200 | 31,5 | 221 | 224 | 6,6 | 10 | 407273 |
| 250 | 225 | 31,5 | 246 | 249 | 6,6 | 10 | 407275 |
| 275 | 250 | 31,5 | 271 | 274 | 6,6 | 10 | 407277 |
| 300 | 275 | 31,5 | 296 | 299 | 6,6 | 10 | 407281 |