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RVA is a single-acting spring energized rod seal energised by a special spring. The advantage of the RVA spring energised seals lies in its low friction and relatively constant preloading force over a relatively large deformation range. The spring energized ptfe lip seals is used wherever friction has to be kept within a narrow tolerance zone, for instance in pressure switches.
RVA型 泛塞封特点
标准材料
•外环： PTFE或填充聚四氟乙烯FPTFE
•弹簧：不锈钢材质（结构有V型，O型，H型）
应用范围
泛塞密封是种用于往复运动用密封。这种密封可适用于恶劣工况，也可以适应某些特殊介质的要求。RVA 是所有要求无爬行，耐化学制品和耐大多数介质用途所推荐使用的密封件，例如:阀、泵、分离器、制动器、配料装置等。
| 活塞杆直径 | 沟槽直径 | 沟槽宽度 | 半径 | 止口高度 | 径向间隙 e max | |||
| d h9 | D H9 | H+0.2 | r1 | t | 2Mpa | 10Mpa | 20Mpa | 40Mpa |
| 3-9.9 | d+2.9 | 2.4 | 0.4 | 0.4 | 0.20 | 0.10 | 0.08 | 0.05 |
| 10-19.9 | d+4.5 | 3.6 | 0.4 | 0.6 | 0.25 | 0.15 | 0.10 | 0.07 |
| 20-39.9 | d+6.2 | 4.8 | 0.6 | 0.7 | 0.35 | 0.20 | 0.15 | 0.08 |
| 40-119.9 | d+9.4 | 7.1 | 0.8 | 0.8 | 0.50 | 0.25 | 0.20 | 0.10 |
| 120-630 | d+12.2 | 9.5 | 0.8 | 0.9 | 0.60 | 0.30 | 0.25 | 0.12 |
| 名称 | d h9 | D H9 | H+0.2 |
| RVA | 3 | 5.9 | 2.4 |
| RVA | 4 | 6.9 | 2.4 |
| RVA | 5 | 7.9 | 2.4 |
| RVA | 6 | 8.9 | 2.4 |
| RVA | 8 | 10.9 | 2.4 |
| RVA | 10 | 14.5 | 3.6 |
| RVA | 12 | 16.5 | 3.6 |
| RVA | 14 | 18.5 | 3.6 |
| RVA | 15 | 19.5 | 3.6 |
| RVA | 16 | 20.5 | 3.6 |
| RVA | 18 | 22.5 | 3.6 |
| RVA | 20 | 26.2 | 4.8 |
| RVA | 22 | 28.2 | 4.8 |
| RVA | 25 | 31.2 | 4.8 |
| RVA | 28 | 34.2 | 4.8 |
| RVA | 30 | 36.2 | 4.8 |
| RVA | 32 | 38.2 | 4.8 |
| RVA | 35 | 41.2 | 4.8 |
| RVA | 36 | 42.2 | 4.8 |
| RVA | 40 | 49.4 | 7.1 |
| RVA | 42 | 51.4 | 7.1 |
| RVA | 45 | 54.4 | 7.1 |
| RVA | 50 | 59.4 | 7.1 |
| 名称 | d h9 | D H9 | H+0.2 |
| RVA | 60 | 69.4 | 7.1 |
| RVA | 70 | 79.4 | 7.1 |
| RVA | 80 | 89.4 | 7.1 |
| RVA | 85 | 94.4 | 7.1 |
| RVA | 90 | 99.4 | 7.1 |
| RVA | 95 | 104.4 | 7.1 |
| RVA | 100 | 109.4 | 7.1 |
| RVA | 110 | 119.4 | 7.1 |
| RVA | 120 | 132.2 | 9.5 |
| RVA | 130 | 142.2 | 9.5 |
| RVA | 140 | 152.2 | 9.5 |
| RVA | 150 | 162.2 | 9.5 |
| RVA | 160 | 172.2 | 9.5 |
| RVA | 170 | 182.2 | 9.5 |
| RVA | 180 | 192.2 | 9.5 |
| RVA | 190 | 202.2 | 9.5 |
| RVA | 200 | 212.2 | 9.5 |
| RVA | 210 | 222.2 | 9.5 |
| RVA | 220 | 232.2 | 9.5 |
| RVA | 230 | 242.2 | 9.5 |
| RVA | 240 | 252.2 | 9.5 |
| RVA | 250 | 262.2 | 9.5 |
| RVA | 280 | 292.2 | 9.5 |
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