轴用往复斯特封
密封体：填充聚四氟乙烯PTFE【PTFE+青铜，PTFE+碳（可选）】 O形圈：橡胶O型圈【丁腈橡胶NBR，氟橡胶FKM（可选）】
由PTFE填充材料不对称截面的滑环，加上一个弹性元件O型圈组成的组合式密封件。轴用斯特封是一种活塞杆用同轴式密封圈，是单向密封元件，在高、中、低压及重载，高频工况下的密封效果非常优秀。适用在液压往复运动系统中，例：挖掘机、推土机、锻压机等。
●抗挤出性能良好 ●尺寸稳定，不受温度影响 ●不会发生困压，因而可多只密封圈串联安装 ●对于强冲击系统具有优秀的缓冲作用 ●优良的抗摩擦特性，摩擦力小，无爬行现象 ●良好的动静密封特
| 压力 | ≤40MPa | |
| 线速度 | ≤15m/s | |
| 温度 | -40℃～+200℃(取决于O形圈材料) | |
| 介质 | 石油基液压油、难燃液压油、生物油、 水和其他（取决于密封圈材料） |
|
| 表面粗糙度 | Ra | Rmax |
| 活塞杆表面 | ≤0.3µm | ≤3µm |
| 沟槽底面 | ≤1,6µm | ≤6.3µm |
| 沟槽侧面 | ≤3µm | ≤16µm |
订货示例型号：ST200－060－60×75.1×6.3
| 活塞杆直径dN f8 | 沟槽尺寸 | 沟槽宽度 | 圆角 | 最大间隙Ｓmax | O形圈截面 | ||||
| 标准工况 | 重载 | 轻载 | D1 H9 | L+0.2 | r1 | 10MPa | 20MPa | 40MPa | d2 |
| 3-7.9 | -- | 8-18.9 | d +4.9 | 2.2 | 0.4 | 0.3 | 0.2 | 0.15 | 1.78 |
| 8-18.9 | -- | 19-37.9 | d +7.3 | 3.2 | 0.6 | 0.40. | 0.25 | 0.15 | 2.62 |
| 19-37.9 | 8-18.9 | 38-199.9 | d +10.7 | 4.2 | 1 | 0.4 | 0.25 | 0.2 | 3.53 |
| 38-199.9 | 19-37.9 | 200-255.9 | d +15.1 | 6.3 | 1.2 | 0.5 | 0.3 | 0.2 | 5.33 |
| 200-255.9 | 38-199.9 | 256-649.9 | d +20.5 | 8.1 | 1.5 | 0.6 | 0.35 | 0.25 | 7 |
| 256-649.9 | 200-255.9 | 650-999.9 | d +24.0 | 8.1 | 1.8 | 0.6 | 0.35 | 0.25 | 7 |
| 650-999.9 | 256-649.9 | -- | d +27.3 | 9.5 | 2.5 | 0.7 | 0.5 | 0.3 | 8.4 |
| ≥1000 | d +38.0 | 13.8 | 3 | 1 | 0.7 | 0.6 | 12 | ||
| 订货型号 | 轴径 | 外径 | 宽度 | 订货型号 | 轴径 | 外径 | 宽度 | |
| dN f8 | D1 H9 | L1+0.2 | dN f8 | D1 H9 | L1+0.2 | |||
| ST200-004 | 4 | 8.9 | 2.2 | ST200-125 | 125 | 140.1 | 6.3 | |
| ST200-005 | 5 | 9.9 | 2.2 | ST200-130 | 130 | 145.1 | 6.3 | |
| ST200-006 | 6 | 10.9 | 2.2 | ST200-135 | 135 | 150.1 | 6.3 | |
| ST200-007 | 7 | 11.9 | 2.2 | ST200-140 | 140 | 155.1 | 6.3 | |
| ST200-008 | 8 | 15.3 | 3.2 | ST200-150 | 150 | 165.1 | 6.3 | |
| ST200-008A | 8 | 12.9 | 2.2 | ST200-160 | 160 | 175.1 | 6.3 | |
| ST200-010 | 10 | 17.3 | 3.2 | ST200-170 | 170 | 185.1 | 6.3 | |
| ST200-012 | 12 | 19.3 | 3.2 | ST200-180 | 180 | 195.1 | 6.3 | |
| ST200-014 | 14 | 21.3 | 3.2 | ST200-190 | 190 | 205.1 | 6.3 | |
| ST200-015 | 15 | 22.3 | 3.2 | ST200-200 | 200 | 220.5 | 8.1 | |
| ST200-016 | 16 | 23.3 | 3.2 | ST200-210 | 210 | 230.5 | 8.1 | |
| ST200-018 | 18 | 25.3 | 3.2 | ST200-220 | 220 | 240.5 | 8.1 | |
| ST200-020 | 20 | 30.7 | 4.2 | ST200-230 | 230 | 250.5 | 8.1 | |
| ST200-022 | 22 | 32.7 | 4.2 | ST200-240 | 240 | 260.5 | 8.1 | |
| ST200-025 | 25 | 35.7 | 4.2 | ST200-250 | 250 | 270.5 | 8.1 | |
| ST200-028 | 28 | 38.7 | 4.2 | ST200-260 | 260 | 284 | 8.1 | |
| ST200-030 | 30 | 40.7 | 4.2 | ST200-270 | 270 | 294 | 8.1 | |
| ST200-032 | 32 | 42.7 | 4.2 | ST200-280 | 280 | 304 | 8.1 | |
| ST200-035 | 35 | 45.7 | 4.2 | ST200-290 | 290 | 314 | 8.1 | |
| ST200-036 | 36 | 46.7 | 4.2 | ST200-300 | 300 | 324 | 8.1 | |
| ST200-038 | 38 | 53.1 | 6.3 | ST200-310 | 310 | 334 | 8.1 | |
| ST200-040 | 40 | 55.1 | 6.3 | ST200-320 | 320 | 344 | 8.1 | |
| ST200-042 | 42 | 57.1 | 6.3 | ST200-330 | 330 | 354 | 8.1 | |
| ST200-045 | 45 | 60.1 | 6.3 | ST200-340 | 340 | 364 | 8.1 | |
| ST200-048 | 48 | 63.1 | 6.3 | ST200-350 | 350 | 374 | 8.1 | |
| ST200-050 | 50 | 65.1 | 6.3 | ST200-360 | 360 | 384 | 8.1 | |
| ST200-055 | 55 | 70.1 | 6.3 | ST200-370 | 370 | 394 | 8.1 | |
| ST200-056 | 56 | 71.1 | 6.3 | ST200-380 | 380 | 404 | 8.1 | |
| ST200-060 | 60 | 75.1 | 6.3 | ST200-390 | 390 | 414 | 8.1 | |
| ST200-063 | 63 | 78.1 | 6.3 | ST200-400 | 400 | 424 | 8.1 | |
| ST200-065 | 65 | 80.1 | 6.3 | ST200-500 | 500 | 524 | 8.1 | |
| ST200-070 | 70 | 85.1 | 6.3 | ST200-600 | 600 | 624 | 8.1 | |
| ST200-075 | 75 | 90.1 | 6.3 | ST200-700 | 700 | 727.3 | 9.5 | |
| ST200-080 | 80 | 95.1 | 6.3 | ST200-800 | 800 | 827.3 | 9.5 | |
| ST200-085 | 85 | 100.1 | 6.3 | ST200-900 | 900 | 927.3 | 9.5 | |
| ST200-090 | 90 | 105.1 | 6.3 | ST200-1000 | 1000 | 1038 | 13.8 | |
| ST200-095 | 95 | 110.1 | 6.3 | ST200-1100 | 1100 | 1138 | 13.8 | |
| ST200-100 | 100 | 115.1 | 6.3 | ST200-1200 | 1200 | 1238 | 13.8 | |
| ST200-105 | 105 | 120.1 | 6.3 | ST200-1300 | 1300 | 1338 | 13.8 | |
| ST200-110 | 110 | 125.1 | 6.3 | ST200-1400 | 1400 | 1438 | 13.8 | |
| ST200-115 | 115 | 130.1 | 6.3 | ST200-1500 | 1500 | 1538 | 13.8 | |
| ST200-120 | 120 | 135.1 | 6.3 |
