ZSDI ROD SEAL
The HUNGER ZSDI seal for cylinders with radial drillings is a piston rod seal which can dynamically operate over drillings in the cylinder bore up to 3 mm diameter. It can also be used as a high pressure seal on cylinders without radial drillings up to 2000 bar.
The ZSDI seal consists of 5 parts. Two L-shaped metallic support rings and an intermediate metallic thrust
ring support a slide ring of PTFE -Compound with narrow sealing lips on its inner diameter. An O-Ring acts as energiser to provide a sealing function even at zero pressure.
| Materials | |||
| Elastic Ring | Slide Ring | L-Ring | |
| Standard | NBR | PTFEB-ronze | < Ø400 POM > Ø400 PA |
| Alternative (on request) | FKM, FKMHW, NBR-TT, H-NBR, EPDM | PTFE-Compounds | PTFE-Compounds, Engineering Plastics |
| Application Range | |||
| Pressure [bar] | Temperature Range [°C] | Sliding Speed [m/s] | |
| Standard | 450 [2000*] | -30 … +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 | b1 | e | Ref. Number |
| 20 | 40 | 9,50 | 10 | 10 | 11003 |
| 25 | 45 | 9,50 | 10 | 10 | 11006 |
| 28 | 48 | 9,50 | 10 | 10 | 423414 |
| 30 | 50 | 9,50 | 10 | 10 | 11008 |
| 36 | 56 | 9,50 | 10 | 10 | 11011 |
| 40 | 60 | 9,50 | 10 | 10 | 424257 |
| 43 | 63 | 9,50 | 10 | 10 | 11014 |
| 45 | 65 | 9,50 | 10 | 10 | 11016 |
| 50 | 70 | 9,50 | 10 | 10 | 11018 |
| 55 | 75 | 9,50 | 10 | 10 | 11021 |
| 60 | 80 | 9,50 | 10 | 10 | 11024 |
| 63 | 83 | 9,50 | 10 | 10 | 71236 |
| 65 | 85 | 9,50 | 10 | 10 | 11026 |
| 70 | 90 | 9,50 | 10 | 10 | 11028 |
| 72 | 92 | 9,50 | 10 | 10 | 72942 |
| 75 | 95 | 9,50 | 10 | 10 | 11030 |
| 78 | 98 | 9,50 | 10 | 10 | 405401 |
| 80 | 100 | 9,50 | 10 | 10 | 11032 |
| 85 | 105 | 9,50 | 10 | 10 | 11034 |
| 90 | 110 | 9,50 | 10 | 10 | 11036 |
| 95 | 115 | 9,50 | 10 | 10 | 11037 |
| 100 | 120 | 9,50 | 10 | 10 | 11039 |
| 105 | 125 | 9,50 | 10 | 10 | 11040 |
| 110 | 130 | 9,50 | 10 | 10 | 11041 |
| 115 | 135 | 9,50 | 10 | 10 | 11042 |
| 120 | 140 | 9,50 | 10 | 10 | 11044 |
| 130 | 150 | 9,50 | 10 | 10 | 11047 |
| 135 | 155 | 9,50 | 10 | 10 | 11048 |
| 140 | 160 | 9,50 | 10 | 10 | 11050 |
| 145 | 165 | 9,50 | 10 | 10 | 11053 |
| 150 | 170 | 9,50 | 10 | 10 | 11054 |
| 160 | 180 | 9,50 | 10 | 10 | 11056 |
| 170 | 190 | 9,50 | 10 | 10 | 11059 |
| 180 | 200 | 9,50 | 10 | 10 | 11061 |
| 190 | 210 | 9,50 | 10 | 10 | 11062 |
| 200 | 220 | 9,50 | 10 | 10 | 11063 |
| 205 | 225 | 9,50 | 10 | 10 | 11065 |
| 215 | 235 | 9,50 | 10 | 10 | 11066 |
| 230 | 250 | 9,50 | 10 | 10 | 11069 |
| 245 | 265 | 9,50 | 10 | 10 | 11071 |
| 260 | 280 | 9,50 | 10 | 10 | 11073 |
| 270 | 290 | 9,50 | 10 | 10 | 11074 |
| 280 | 300 | 9,50 | 10 | 10 | 11075 |
| 700 | 720 | 9,50 | 10 | 10 | 419356 |