ZSDA PISTON SEAL
The ZSDA seal for cylinders with radial drillings is a piston 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 with-out radial drillings up to 2000 bar.
The ZSDA seal consists of 5 parts. Two L-shaped metallic support rings and an intermediate metallic thrust ring support a slide ring of PTFE compound withM narrow sealing lips on its outer 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-Bronze | Bronze |
Alternative (on request) | FKM, FKMHW, NBR-TT, H-NBR, EPDM | PTFE-Compounds | Stainless Steel, Aluminum |
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 |
50 | 30 | 9,5 | 10 | 7 | 11108 |
56 | 36 | 9,5 | 10 | 7 | 11110 |
63 | 43 | 9,5 | 10 | 7 | 11112 |
65 | 45 | 9,5 | 10 | 7 | 11113 |
70 | 50 | 9,5 | 10 | 7 | 11114 |
75 | 55 | 9,5 | 10 | 7 | 11115 |
80 | 60 | 9,5 | 10 | 7 | 11117 |
85 | 65 | 9,5 | 10 | 7 | 11118 |
90 | 70 | 9,5 | 10 | 7 | 11120 |
95 | 75 | 9,5 | 10 | 7 | 11121 |
100 | 80 | 9,5 | 10 | 7 | 11122 |
105 | 85 | 9,5 | 10 | 10 | 11123 |
110 | 90 | 9,5 | 10 | 10 | 11124 |
115 | 95 | 9,5 | 10 | 10 | 11125 |
120 | 100 | 9,5 | 10 | 10 | 11126 |
125 | 105 | 9,5 | 10 | 10 | 11127 |
130 | 110 | 9,5 | 10 | 10 | 11128 |
135 | 115 | 9,5 | 10 | 10 | 11129 |
140 | 120 | 9,5 | 10 | 10 | 11130 |
150 | 130 | 9,5 | 10 | 10 | 11132 |
155 | 135 | 9,5 | 10 | 10 | 11133 |
160 | 140 | 9,5 | 10 | 10 | 11134 |
165 | 145 | 9,5 | 10 | 10 | 11135 |
170 | 150 | 9,5 | 10 | 10 | 11136 |
180 | 160 | 9,5 | 10 | 10 | 11137 |
190 | 170 | 9,5 | 10 | 10 | 11139 |
200 | 180 | 9,5 | 10 | 10 | 11140 |
210 | 190 | 9,5 | 10 | 12 | 11141 |
220 | 200 | 9,5 | 10 | 12 | 11142 |
225 | 205 | 9,5 | 10 | 12 | 11143 |
235 | 215 | 9,5 | 10 | 12 | 11144 |
250 | 230 | 9,5 | 10 | 12 | 11147 |
265 | 245 | 9,5 | 10 | 12 | 11149 |
280 | 260 | 9,5 | 10 | 12 | 11152 |
290 | 270 | 9,5 | 10 | 12 | 11153 |
300 | 280 | 9,5 | 10 | 12 | 11154 |