Double O-Ring Combination Dustproof Seal DPT2
DPT2
Quantity:
1. Application and properties
Suitable for agricultural machinery, injection molding machines, metallurgical equipment, etc. It consists of a sealing ring and 2 O-rings used as preloading elements, with good dust scraping effect, low friction, and no stick-slip phenomenon.
It has good adjustment and positioning ability, especially suitable for large diameter piston rods.
Operating temperature range from -30°C to +160°C.
Can be used for special working conditions such as high speed, extremely low speed, micro-stroke, etc.
Double-lip design can scrape off excess oil film carried by the piston rod, keeping the oil film thickness at a reasonable level.
2. Standard material
Sealing ring: filled PTFE
O-Ring: NBR / FKM
3. Working conditions
Working conditions | |||
Diameter Range | Temperature Range°C | Speed | Medium |
100～2000mm | -30～100(NBR) -20～160(FKM) | 5m/s | Hydraulic oil, flame retardant liquid, water, |
4. Related Dimensions:
R1=1～2; C=(0.7～1.0)L. The specific values are selected according to the section size of the seal. The remaining values are listed in the table below:
| Rod | Groove Diameter | Groove Width | Step 台径Diameter | Outer Groove Width | |
| Diameter d | |||||
| Standard Application | Suitable Applicaiton | D | L | D1 | L1 |
| 100－229.9 | 100～450.0 | d+22.2 | 6.3 | d+10.7 | 4.2 |
| 230～299.9 | 220～450.0 | d+24.2 | 6.3 | d+10.7 | 4.2 |
| 300～629.9 | 250～650.0 | d+33.0 | 8.1 | d+15.1 | 6.3 |
| 630～999.9 | 500.0～1000 | d+36.5 | 9.5 | d+15.1 | 6.3 |
5. Marking method:
Mark with the dimension of installation groove as below
For example: DPT2-l00×122.2×13.5
6. Installation Dimensions
| Rod Dia | Groove | Sealing Width | Groove Width | Outer Groove Width | Order No. | Rod Dia | Groove | Sealing Width | Groove Width | Outer Groove Width | Order No. | |
| Dia | Dia | |||||||||||
| d | D | H | L | L1 | d | D | H | L | L1 | |||
| 100 | 122.2 | 13.5 | 6.3 | 4.2 | DPT2-1000 | 410 | 443 | 18.4 | 8.1 | 6.3 | DPT2-4100 | |
| 110 | 132.2 | 13.5 | 6.3 | 4.2 | DPT2-1100 | 420 | 453 | 18.4 | 8.1 | 6.3 | DPT2-4200 | |
| 120 | 142.2 | 13.5 | 6.3 | 4.2 | DPT2-1200 | 430 | 463 | 18.4 | 8.1 | 6.3 | DPT2-4300 | |
| 130 | 152.2 | 13.5 | 6.3 | 4.2 | DPT2-1300 | 440 | 473 | 18.4 | 8.1 | 6.3 | DPT2-4400 | |
| 140 | 162.2 | 13.5 | 6.3 | 4.2 | DPT2-1400 | 450 | 483 | 18.4 | 8.1 | 6.3 | DPT2-4500 | |
| 150 | 172.2 | 13.5 | 6.3 | 4.2 | DPT2-1500 | 470 | 503 | 18.4 | 8.1 | 6.3 | DPT2-4700 | |
| 160 | 182.2 | 13.5 | 6.3 | 4.2 | DPT2-1600 | 480 | 513 | 18.4 | 8.1 | 6.3 | DPT2-4800 | |
| 170 | 192.2 | 13.5 | 6.3 | 4.2 | DPT2-1700 | 500 | 533 | 18.4 | 8.1 | 6.3 | DPT2-5000 | |
| 180 | 202.2 | 13.5 | 6.3 | 4.2 | DPT2-1700 | 510 | 543 | 18.4 | 8.1 | 6.3 | DPT2-5100 | |
| 190 | 212.2 | 13.5 | 6.3 | 4.2 | DPT2-1900 | 550 | 583 | 18.4 | 8.1 | 6.3 | DPT2-5500 | |
| 200 | 222.2 | 13.5 | 6.3 | 4.2 | DPT2-2000 | 560 | 593 | 18.4 | 8.1 | 6.3 | DPT2-5600 | |
| 210 | 232.2 | 13.5 | 6.3 | 4.2 | DPT2-2100 | 600 | 633 | 18.4 | 8.1 | 6.3 | DPT2-6000 | |
| 220 | 242.2 | 13.5 | 6.3 | 4.2 | DPT2-2200 | 630 | 666.5 | 19.8 | 9.5 | 6.3 | DPT2-6300 | |
| 230 | 252.2 | 13.5 | 6.3 | 4.2 | DPT2-2300 | 640 | 676.5 | 19.8 | 9.5 | 6.3 | DPT2-6400 | |
| 240 | 262.2 | 13.5 | 6.3 | 4.2 | DPT2-2400 | 660 | 696.5 | 19.8 | 9.5 | 6.3 | DPT2-6600 | |
| 250 | 272.2 | 13.5 | 6.3 | 4.2 | DPT2-2500 | 670 | 706.5 | 19.8 | 9.5 | 6.3 | DPT2-6700 | |
| 260 | 282.2 | 13.5 | 6.3 | 4.2 | DPT2-2600 | 700 | 736.5 | 19.8 | 9.5 | 6.3 | DPT2-7000 | |
| 270 | 292.2 | 13.5 | 6.3 | 4.2 | DPT2-2700 | 740 | 776.5 | 19.8 | 9.5 | 6.3 | DPT2-7400 | |
| 275 | 297.2 | 13.5 | 6.3 | 4.2 | DPT2-2750 | 750 | 786.5 | 19.8 | 9.5 | 6.3 | DPT2-7500 | |
| 280 | 302.2 | 13.5 | 6.3 | 4.2 | DPT2-2800 | 795 | 831.5 | 19.8 | 9.5 | 4.2 | DPT2-7950 | |
| 290 | 312.2 | 13.5 | 6.3 | 4.2 | DPT2-2900 | 800 | 836.5 | 19.8 | 9.5 | 4.2 | DPT2-8000 | |
| 295 | 317.2 | 13.5 | 6.3 | 4.2 | DPT2-2950 | 820 | 856.5 | 19.8 | 9.5 | 4.2 | DPT2-8200 | |
| 300 | 333 | 18.4 | 8.1 | 6.3 | DPT2-3000 | 830 | 866.5 | 19.8 | 9.5 | 4.2 | DPT2-8300 | |
| 320 | 353 | 18.4 | 8.1 | 6.3 | DPT2-3200 | 850 | 886.5 | 19.8 | 9.5 | 6.3 | DPT2-8500 | |
| 340 | 373 | 18.4 | 8.1 | 6.3 | DPT2-3400 | 890 | 926.5 | 19.8 | 9.5 | 6.3 | DPT2-8900 | |
| 350 | 383 | 18.4 | 8.1 | 6.3 | DPT2-3500 | 950 | 986.5 | 19.8 | 9.5 | 6.3 | DPT2-9500 | |
| 360 | 393 | 18.4 | 8.1 | 6.3 | DPT2-3600 | 970 | 1006.5 | 19.8 | 9.5 | 6.3 | DPT2-9700 | |
| 370 | 403 | 18.4 | 8.1 | 6.3 | DPT2-3700 | 1130 | 1166.5 | 19.8 | 9.5 | 6.3 | DPT2-11300 | |
| 380 | 413 | 18.4 | 8.1 | 6.3 | DPT2-3800 | 1150 | 1186.5 | 19.8 | 9.5 | 6.3 | DPT2-11500 | |
| 385 | 418 | 18.4 | 8.1 | 6.3 | DPT2-3850 | 1160 | 1196.5 | 19.8 | 9.5 | 6.3 | DPT2-11600 | |
| 390 | 423 | 18.4 | 8.1 | 6.3 | DPT2-3900 | 1320 | 1356.5 | 19.8 | 9.5 | 6.3 | DPT2-13200 | |
| 400 | 433 | 18.4 | 8.1 | 6.3 | DPT2-4000 |
