一、性能与用途
由一个低磨擦的填充聚四氟乙烯（PTFE）环和O形橡胶密封圈组合而成，O形圈提供足够的密封预紧力，并对PTFE环的磨耗起补偿作用。PTFE摩擦系数小，动静摩擦系数相近。适用于高低速往复运动及高压系统的油缸活塞杆密封。采用两个阶梯圈密封，可达到零泄露。一般要和导向环配套使用。轴径小于Φ30的规格，应采用分体式沟槽。
二、材 质
阶梯圈为填充聚四氟乙烯PTFE，O形圈为丁腈橡胶NBR或氟胶FKM。
三、工况条件
耐 压：0-40MPa；
往复速度 le;5m/s；
工作温度：丁晴NBR：-30～+120℃，氟胶FKM：-20～+200℃；
工作介质：液压油、气、水（在磷酸酯液压油中选用氟胶)。
四、设计标准
本系列符合GB/T 15242.1-94及GB/T 15242.3-94标准。可参考Parker公司OD系列、Merkel公司-OMS-MR及霞板公司S55013系列。
五、标注方法
轴用阶梯圈用订货号来标注，示例：GSJ-1000 PTFE+NBR
| 规格及沟槽尺寸 | ||||||
| 订货号 | Df8 | DH9 | G+0.15 | Rmax | E | |
| 0-20 MPa | 20-40 MPa | |||||
| GSJ0040 | 4 | 8.9 | 2.2 | 0.3 | 0.4-0.2 | 0.2-0.1 |
| GSJ0050 | 5 | 9.9 | ||||
| GSJ0060 | 6 | 10.9 | ||||
| GSJ0070 | 7 | 11.9 | ||||
| GSJ0080 | 8 | 15.5 | 3.2 | 0.5 | 0.6-0.3 | 0.3-0.1 |
| GSJ0100 | 10 | 17.5 | ||||
| GSJ0120 | 12 | 19.5 | ||||
| GSJ0140 | 14 | 21.5 | ||||
| GSJ0160 | 16 | 23.5 | ||||
| GSJ0180 | 18 | 25.5 | ||||
| GSJ0190 | 19 | 30 | 4.2 | 0.7 | 0.3-0.2 | |
| GSJ0200 | 20 | 31 | ||||
| GSJ0220 | 22 | 33 | ||||
| GSJ0250 | 25 | 36 | ||||
| GSJ0280 | 28 | 39 | ||||
| GSJ0300 | 30 | 41 | ||||
| GSJ0320 | 32 | 43 | ||||
| GSJ0350 | 35 | 46 | ||||
| GSJ0360 | 36 | 47 | ||||
| GSJ0380 | 38 | 53.5 | 6.3 | 1.2 | 0.8-0.4 | 0.4-0.2 |
| GSJ0400 | 40 | 55.5 | ||||
| GSJ0420 | 42 | 57.5 | ||||
| GSJ0450 | 45 | 60.5 | ||||
| GSJ0500 | 50 | 65.5 | ||||
| GSJ0560 | 56 | 71.5 | ||||
| GSJ0600 | 60 | 75.5 | ||||
| GSJ0630 | 63 | 78.5 | ||||
| GSJ0650 | 65 | 80.5 | ||||
| GSJ0700 | 70 | 85.5 | ||||
| GSJ0750 | 75 | 90.5 | ||||
| GSJ0800 | 80 | 95.5 | ||||
| GSJ0850 | 85 | 100.5 | ||||
| GSJ0900 | 90 | 105.5 | ||||
| GSJ1000 | 100 | 115.5 | ||||
| GSJ1050 | 105 | 120.5 | ||||
| GSJ1100 | 110 | 125.5 | ||||
| GSJ1150 | 115 | 130.5 | ||||
| GSJ1250 | 125 | 140.5 | ||||
| GSJ1300 | 130 | 145.5 | ||||
| GSJ1400 | 140 | 155.5 | ||||
| GSJ1600 | 160 | 175.5 | ||||
| GSJ1900 | 190 | 205.5 | ||||
| GSJ2000 | 200 | 221 | 8.1 | 1.5 | 1.0-0.6 | 0.6-0.4 |
| GSJ2100 | 210 | 231 | ||||
| GSJ2200 | 220 | 241 | ||||
| GSJ2300 | 230 | 251 | ||||
| GSJ2500 | 250 | 271 | ||||
| GSJ2560 | 256 | 280.5 | 8.1 | 1.5 | 1.0-0.6 | 0.6-0.4 |
| GSJ2600 | 260 | 284.5 | ||||
| GSJ2900 | 290 | 314.5 | ||||
| GSJ3200 | 320 | 344.5 | ||||
| GSJ3600 | 360 | 384.5 | ||||
| GSJ3700 | 370 | 394.5 | ||||
| GSJ4000 | 400 | 424.5 | ||||
| GSJ4100 | 410 | 434.5 | ||||
| GSJ4200 | 420 | 444.5 | ||||
| GSJ4300 | 430 | 454.5 | ||||
| GSJ4400 | 440 | 464.5 | ||||
| GSJ4500 | 450 | 474.5 | ||||
| GSJ4600 | 460 | 484.5 | ||||
| GSJ4700 | 470 | 494.5 | ||||
| GSJ4800 | 480 | 504.5 | ||||
| GSJ4900 | 490 | 514.5 | ||||
| GSJ5000 | 500 | 524.5 | ||||
| GSJ5100 | 510 | 534.5 | ||||
| GSJ5200 | 520 | 544.5 | ||||
| GSJ5300 | 530 | 554.5 | ||||
| GSJ5400 | 540 | 564.5 | ||||
| GSJ5500 | 550 | 574.5 | ||||
| GSJ5600 | 560 | 584.5 | ||||
| GSJ6000 | 600 | 624.5 | ||||
| GSJ6100 | 610 | 634.5 | ||||
| GSJ6200 | 620 | 644.5 | ||||
| GSJ6300 | 630 | 654.5 | ||||
| GSJ6400 | 640 | 664.5 | ||||
| GSJ6500 | 650 | 678 | 9.5 | 2.0 | 1.2-0.8 | 0.8-0.5 |
| GSJ6600 | 660 | 688 | ||||
| GSJ6700 | 670 | 698 | ||||
| GSJ6800 | 680 | 708 | ||||
| GSJ6900 | 690 | 718 | ||||
| GSJ7000 | 700 | 728 | ||||
| GSJ7100 | 710 | 738 | ||||
| GSJ7500 | 750 | 778 | ||||
| GSJ8000 | 800 | 828 | ||||
| GSJ8500 | 850 | 878 | ||||
| GSJ9000 | 900 | 928 | ||||
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