Advantages:
–Closed grooes and intgral piston (the seal comprising and elastomeric profile seal ring, two back-up rings and two wear rings). reduced the length of piston, reduced maching costs.
-Good extrusion resistance.
-The grooves are simple and easy to install
-Good sealing effect.
-Low product cost.
| ITEM | OD | ID | H |
| OHM | 45 | 27 | 12.1 |
| OHM | 50 | 32 | 12.1 |
| OHM | 55 | 37 | 12.1 |
| OHM | 60 | 42 | 12.1 |
| OHM | 65 | 47 | 12.1 |
| OHM | 70 | 52 | 14.5 |
| OHM | 80 | 58 | 14.5 |
| OHM | 90 | 68 | 14.5 |
| OHM | 100 | 78 | 14.5 |
| OHM | 110 | 88 | 14.5 |
| OHM | 115 | 93 | 14.5 |
| OHM | 120 | 98 | 14.5 |
| OHM | 125 | 103 | 14.5 |
| OHM | 130 | 108 | 14.5 |
| OHM | 140 | 118 | 14.5 |
| OHM | 150 | 128 | 14.5 |
| OHM | 160 | 138 | 14.5 |
| OHM | 170 | 148 | 14.5 |
| OHM | 180 | 158 | 14.5 |
| OHM | 190 | 168 | 14.5 |
| OHM | 200 | 178 | 14.5 |