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The PG-type piston seals is a double-acting sealing component consisting of a preloaded elastomeric O-ring and a specially designed polyurethane sealing outer ring.
PG型活塞密封件是由预紧弹性O形圈和专门设计的聚氨酯密封外圈组成的双作用密封元件。
设计说明：
PG型活塞密封就是一种双向作用密封元件，它由一个预紧弹性体O型圈和一个特殊聚氨酯材料密封外环组成。两个外侧的密封唇作为主密封，以封住来自于系统边的液体的压力，同时防止在整个密封面上形成液压力积聚位于密封面中间的支撑圈以及两侧密封唇的凸起提高了比压，增强了密封效果。
优点：
•动密封及静密封性能好，负载下优秀的位置保持性
•允许较大的缸筒表面光洁度范围
•磨损率小，使用寿命长
•槽设计简单，可使用整体式活塞，安装是无需外环复位
| 压力 Mpa | 16 | 25 | 35 | 40 |
| 最大挤出间隙（H>6）mm | 0.9 | 0.8 | 0.5 | 0.4 |
| 最大挤出间隙（H<6）mm | 0.7 | 0.5 | 0.3 | 0.2 |
| 名称 | D | d | H |
| PG | 40 | 29 | 4.2 |
| PG | 45 | 34 | 4.2 |
| PG | 50 | 39 | 4.2 |
| PG | 60 | 49 | 4.2 |
| PG | 63 | 52 | 4.2 |
| PG | 70 | 59 | 4.2 |
| PG | 50 | 34.5 | 6.3 |
| PG | 55 | 39.5 | 6.3 |
| PG | 60 | 44.5 | 6.3 |
| PG | 65 | 49.5 | 6.3 |
| PG | 70 | 54.5 | 6.3 |
| PG | 75 | 59.5 | 6.3 |
| PG | 80 | 64.5 | 6.3 |
| PG | 85 | 69.5 | 6.3 |
| PG | 90 | 74.5 | 6.3 |
| PG | 95 | 79.5 | 6.3 |
| PG | 100 | 84.5 | 6.3 |
| PG | 105 | 89.5 | 6.3 |
| PG | 110 | 94.5 | 6.3 |
| PG | 115 | 99.5 | 6.3 |
| PG | 120 | 104.5 | 6.3 |
| PG | 125 | 109.5 | 6.3 |
| PG | 130 | 114.5 | 6.3 |
| 名称 | D | d | H |
| PG | 85 | 64 | 8.1 |
| PG | 90 | 69 | 8.1 |
| PG | 95 | 74 | 8.1 |
| PG | 100 | 79 | 8.1 |
| PG | 105 | 84 | 8.1 |
| PG | 110 | 89 | 8.1 |
| PG | 115 | 94 | 8.1 |
| PG | 120 | 99 | 8.1 |
| PG | 125 | 104 | 8.1 |
| PG | 130 | 109 | 8.1 |
| PG | 135 | 114 | 8.1 |
| PG | 140 | 119 | 8.1 |
| PG | 145 | 124 | 8.1 |
| PG | 150 | 129 | 8.1 |
| PG | 155 | 134 | 8.1 |
| PG | 160 | 139 | 8.1 |
| PG | 165 | 144 | 8.1 |
| PG | 170 | 149 | 8.1 |
| PG | 180 | 159 | 8.1 |
| PG | 190 | 169 | 8.1 |
| PG | 200 | 179 | 8.1 |
| PG | 210 | 189 | 8.1 |
| PG | 220 | 199 | 8.1 |
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