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DHS 是聚氨酯双唇密封件，用于液压和气动系统，保护内部组件免受灰尘、污垢和湿气等污染物的侵害。它旨在清洁缩回的杆或轴，防止外部颗粒进入系统。
设计说明：
DHS 防尘密封件是一种双唇防尘密封件，旨在防止污染物进入，面向介质的密封唇可减少残留油膜。聚氨酯材料可确保干摩擦期间的出色特性，从而提高耐磨性，DHS 双唇防尘密封件还具有良好的抗臭氧和气候条件辐射性能，从而延长了使用寿命。
当使用PTFE活塞杆密封件时，推荐使用DHS型双唇防尘密封圈。
| d | D | t | h | H | D2 | B | ISO | JIS |
| 18 | 26 | 4.5 | 6 | 5 | 22 | 2 | • | • |
| 20 | 28 | 4.5 | 6 | 5 | 24 | 2 | • | • |
| 22 | 30 | 4.5 | 6 | 5 | 26 | 2 | • | • |
| 25 | 33 | 4.5 | 6 | 5 | 27 | 2 | • | • |
| 28 | 36 | 4.5 | 6 | 5 | 32 | 2 | • | • |
| 30 | 38 | 4.5 | 6 | 5 | 34 | 2 | • | • |
| 30 | 38 | 5 | 6.5 | 6 | 34 | 2 | • | |
| 32 | 40 | 4.5 | 6 | 5 | 36 | 2 | • | • |
| 32 | 40 | 5 | 6.5 | 6 | 36 | 2 | • | |
| 35 | 43 | 4.5 | 6 | 5 | 39 | 2 | • | • |
| 35 | 43 | 5 | 6.5 | 6 | 39 | 2 | • | |
| 36 | 44 | 4.5 | 6 | 5 | 40 | 2 | • | • |
| 36 | 44 | 5 | 6.5 | 6 | 40 | 2 | • | |
| 38 | 46 | 4.5 | 6 | 5 | 42 | 2 | • | • |
| 38 | 46 | 5 | 6.5 | 6 | 42 | 2 | • | |
| 40 | 48 | 4.5 | 6 | 5 | 44 | 2 | • | • |
| 40 | 48 | 5 | 6.5 | 6 | 44 | 2 | • | |
| 45 | 53 | 4.5 | 6 | 5 | 49 | 2 | • | • |
| 45 | 53 | 5 | 6.5 | 6 | 49 | 2 | • | |
| 50 | 58 | 4.5 | 6 | 5 | 54 | 2 | • | • |
| 50 | 58 | 5 | 6.5 | 6 | 54 | 2 | • | |
| 53 | 61 | 5 | 6.5 | 6 | 57 | 2 | • | |
| 55 | 63 | 5 | 6.5 | 6 | 59 | 2 | • | |
| 55 | 65 | 5.3 | 6.8 | 6 | 60 | 2 | • | |
| 56 | 66 | 5.3 | 6.8 | 6 | 61 | 2 | • | |
| 60 | 68 | 5 | 6.5 | 6 | 64 | 2 | • | |
| 60 | 70 | 5.3 | 6.8 | 6 | 65 | 2 | • | |
| 63 | 71 | 5 | 6.5 | 6 | 67 | 2 | • | |
| 63 | 73 | 5.3 | 6.8 | 6 | 68 | 2 | • | |
| 65 | 73 | 5 | 6.5 | 6 | 69 | 2 | • |
| d | D | t | h | H | D2 | B | ISO | JIS |
| 65 | 75 | 5.3 | 6.8 | 6 | 70 | 2 | • | |
| 70 | 80 | 5.3 | 6.8 | 6 | 75 | 3 | • | |
| 70 | 80 | 6 | 8 | 7 | 75 | 3 | • | |
| 75 | 85 | 5.3 | 6.8 | 6 | 80 | 3 | • | |
| 75 | 85 | 6 | 8 | 7 | 80 | 3 | • | |
| 80 | 90 | 5.3 | 6.8 | 6 | 85 | 3 | • | |
| 80 | 90 | 6 | 8 | 7 | 85 | 3 | • | |
| 85 | 95 | 5.3 | 6.8 | 6 | 90 | 3 | • | |
| 85 | 95 | 6 | 8 | 7 | 90 | 3 | • | |
| 90 | 100 | 5.3 | 6.8 | 6 | 95 | 3 | • | |
| 90 | 100 | 6 | 8 | 7 | 95 | 3 | • | |
| 95 | 105 | 5.3 | 6.8 | 6 | 100 | 3 | • | |
| 95 | 105 | 6 | 8 | 7 | 100 | 3 | • | |
| 100 | 110 | 5.3 | 6.8 | 6 | 105 | 3 | • | |
| 100 | 110 | 6 | 8 | 7 | 105 | 3 | • | |
| 105 | 115 | 6 | 8 | 7 | 110 | 3 | • | |
| 110 | 120 | 6 | 8 | 7 | 115 | 3 | • | |
| 115 | 125 | 6 | 8 | 7 | 120 | 4 | • | |
| 120 | 130 | 6 | 8 | 7 | 125 | 4 | • | |
| 125 | 138 | 7 | 9.5 | 8 | 132 | 4 | • | |
| 130 | 143 | 7 | 9.5 | 8 | 137 | 4 | • | |
| 135 | 148 | 7 | 9.5 | 8 | 142 | 4 | • | |
| 140 | 153 | 7 | 9.5 | 8 | 147 | 4 | • | |
| 145 | 158 | 7 | 9.5 | 8 | 152 | 4 | • | |
| 150 | 163 | 7 | 9.5 | 8 | 157 | 4 | • | |
| 160 | 173 | 7 | 9.5 | 8 | 167 | 4 | • | |
| 170 | 183 | 7 | 9.5 | 8 | 177 | 4 | • | |
| 180 | 193 | 7 | 9.5 | 8 | 187 | 4 | • | |
| 190 | 203 | 7 | 9.5 | 8 | 197 | 5 | • | |
| 200 | 213 | 7 | 9.5 | 8 | 207 | 5 | • |
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