DHS型：
帶銳角邊的雙唇防塵密封件，外加一個安裝在介質面的密封唇。
工作溫度：-35度~+100度
往復速度：≤2m/s
介質：礦物油及油脂
作用：DHS型是雙向作用的防塵圈，雙向作用包括一方面刮除向里運動的活塞桿表面臟污，另一方面保留剩余油膜在下次向里運動時重新送入系統中。
用途說明
DH型雙唇防塵圈的作用是防止粉塵、污物、砂粒及金屬屑的進入。主要用于液壓缸和氣缸、
| 9x14x5/6.5 | 20x26x3.6/4.8 | 55x65x5/8 | 85x98x6/9 |
| 10x20x4/8 | 20x26x3.6/5 | 55x65x6/8 | 90x100x6/8 |
| 11.2x19.2x4.5/6 | 20x26x3/6 | 56x64x5/6.5 | 90x98x5/8 |
| 12x16x3/4 | 20x26x6/8 | 58x66x5/6.5 | 92x105x7/10 |
| 12x17x3.2/4.2 | 20x28x4.5/6 | 60x68x5/6.5 | 95x105x6/8 |
| 12x18x2.5/5 | 20x30x7/10 | 60x70x5.3/7.3 | 98x108x6/8 |
| 12x18x3.9/6 | 20x32x5/10 | 60x70x6/8 | 98x113x6/9 |
| 12x18x3.6/4.8 | 22x30x4.5/6 | 60x73x7/10 | 100x110x6/8 |
| 12x18x3.8/4.8 | 22x33.8x3/5 | 63x71x5/6.5 | 100x112x8/10 |
| 12x20x4.5/6 | 22.4x30.4x4.5/6 | 65x73x5/6.5 | 100x112x7/11 |
| 12.5x20.5x4.5/6 | 23.5x31.5x4.5/6 | 67x75x5/6.5 | 100x115x6/8.5 |
| 13x20x5/6.5 | 24x32x4.5/6 | 70x78x4/7 | 101.6x114.3x7/10 |
| 14x22x4.5/6 | 25x30x4.5/6 | 70x80x5/8 | 105x115x6/8 |
| 16x22x8/10 | 25x31x3.6/5 | 70x80x6/8 | 105x118x6/8 |
| 16x22x3.6/4.8 | 25x31x4/6 | 71x81x6/8 | 110x120x6/8 |
| 16x24x4.5/6 | 25x33x4.5/6 | 75x85x6/8 | 110x123x6/9 |
| 16x26x7/9.5 | 25x35x5.3/7 | 80x88x4/7 | 110x125x6/9 |
| 18x24x3.6/4.8 | 25x36.8x5/8 | 80x90x5/8 | 112x122x6/8 |
| 18x26x4.5/6 | 26x34x4.5/6 | 80x90x6/8 | 115x125x6/8 |
| 18x28x4/8 | 27x35x4.5/6 | 80x93x7/10 | 118x128x6/8 |
| 18.5x26x3.2/4 | 53x61x5/6.5 | 82.55x95.25x6.35/9.53 | 120x130x6/8 |
| 19x27x4.5/6 | 53x61x5/7 | 84x99x6.5/11 | 120x132.2x7.2/12 |
| 19.05x29.05x5.3/7 | 55x63x5/6.5 | 85x95x6/8 | 400x420x10/18 |
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