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Piston Seals
Sealing ring: F-PTFE
Elastic ring: NBR or FKM
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Application Range
It is a double combined ring composed of a PTFE rectangular section slip ring and a rectangular ring acting as loading elements. Apply to the hydraulic cylinder piston sealing systems of heavy duty machinery or metallurgical equipment, such as hydraulic machine and injection molding machine.
Please refer to standards of OMK-S products of Merkel Company when designing and selecting.
Features
High pressure resistance
Excellent anti-extrusion characteristics
Good thermal resistance
Possess high contact pressure owing to the rubber special shaped ring
Anti-twist structure
High corrosion resistance
Low friction with no "hydraulic crawling"
Working Conditions
| Speed | Pressure Range | Temperature Range | Media | Available Diameter Range |
| 5m/s | 0～60MPa | -30℃+200℃ | Hydraulic oil, fire-resistanthydraulic fluid, environmentally-safe hydraulic oil (biological oil), water and others, depending onthe materials of sealing rings | 55-2000mm |
Installation Dimension
| Cylinder Diameter | Bottom Diameter | Groove Width | Fillet | Radial Clearance S max | |||
| D H8 | d h8 | L+0.2 | r1 | 16MPa | 26MPa | 32MPa | 40MPa |
| 55.0-149.9 | D-10.0 | 10.0 | 0.4 | 0.60 | 0.50 | 0.40 | 0.40 |
| 150.0-244.9 | D-12.5 | 12.5 | 0.4 | 0.75 | 0.65 | 0.55 | 0.50 |
| 245.0-500.0 | D-15.0 | 15.0 | 0.8 | 0.75 | 0.65 | 0.55 | 0.50 |
| 500.1-760.0 | D-17.5 | 17.5 | 1.2 | 0.75 | 0.65 | 0.55 | 0.50 |
| 760.1-999.9 | D-20.0 | 20.0 | 1.2 | 0.80 | 0.70 | 0.60 | 0.55 |
| ≥1000 | D-20.0 | 20.5 | 1.2 | 0.80 | 0.70 | 0.60 | 0.55 |
Specification Table
| Order No. | Cylinder Diameter | Bottom Diameter | Width |
| DH8 | dh8 | L+0.2 | |
| MAIS-10-55 | 55 | 40 | 10 |
| MAIS-10-70 | 70 | 55 | 10 |
| MAIS-10-80 | 80 | 60 | 10 |
| MAIS-10-90 | 90 | 70 | 10 |
| MAIS-10-100 | 100 | 80 | 10 |
| MAIS-10-110 | 110 | 90 | 10 |
| MAIS-10-120 | 120 | 100 | 10 |
| MAIS-10-130 | 130 | 110 | 10 |
| MAIS-10-140 | 140 | 120 | 10 |
| MAIS-10-155 | 155 | 130 | 12.5 |
| MAIS-10-165 | 165 | 140 | 12.5 |
| MAIS-10-170 | 170 | 145 | 12.5 |
| MAIS-10-180 | 180 | 155 | 12.5 |
| MAIS-10-185 | 185 | 160 | 12.5 |
| MAIS-10-190 | 190 | 165 | 12.5 |
| MAIS-10-200 | 200 | 175 | 12.5 |
| MAIS-10-205 | 205 | 180 | 12.5 |
| MAIS-10-210 | 210 | 185 | 12.5 |
| MAIS-10-215 | 215 | 190 | 12.5 |
| MAIS-10-220 | 220 | 195 | 12.5 |
| MAIS-10-225 | 225 | 200 | 12.5 |
| MAIS-10-235 | 235 | 210 | 12.5 |
| MAIS-10-245 | 245 | 215 | 15 |
| MAIS-10-250 | 250 | 220 | 15 |
| MAIS-10-260 | 260 | 230 | 15 |
| MAIS-10-275 | 275 | 245 | 15 |
| MAIS-10-285 | 285 | 255 | 15 |
| MAIS-10-290 | 290 | 260 | 15 |
| MAIS-10-310 | 310 | 280 | 15 |
| MAIS-10-320 | 320 | 290 | 15 |
| MAIS-10-325 | 325 | 295 | 15 |
| MAIS-10-330 | 330 | 300 | 15 |
| MAIS-10-335 | 335 | 305 | 15 |
| MAIS-10-340 | 340 | 310 | 15 |
| MAIS-10-350 | 350 | 320 | 15 |
| MAIS-10-360 | 360 | 330 | 15 |
| MAIS-10-370 | 370 | 340 | 15 |
| MAIS-10-380 | 380 | 350 | 15 |
| MAIS-10-800 | 800 | 760 | 20 |
| MAIS-10-820 | 820 | 780 | 20 |
| MAIS-10-830 | 830 | 790 | 20 |
| MAIS-10-840 | 840 | 800 | 20 |
| MAIS-10-850 | 850 | 810 | 20 |
| MAIS-10-870 | 870 | 830 | 20 |
| MAIS-10-880 | 880 | 840 | 20 |
| MAIS-10-890 | 890 | 850 | 20 |
| MAIS-10-900 | 900 | 860 | 20 |
| Order No. | Cylinder Diameter | Bottom Diameter | Width |
| DH8 | dh8 | L+0.2 | |
| MAIS-10-390 | 390 | 360 | 15 |
| MAIS-10-400 | 400 | 370 | 15 |
| MAIS-10-455 | 455 | 420 | 17.5 |
| MAIS-10-460 | 460 | 425 | 17.5 |
| MAIS-10-460 | 460 | 430 | 15 |
| MAIS-10-480 | 480 | 450 | 15 |
| MAIS-10-490 | 490 | 460 | 15 |
| MAIS-10-500 | 500 | 470 | 15 |
| MAIS-10-510 | 510 | 475 | 17.5 |
| MAIS-10-520 | 520 | 485 | 17.5 |
| MAIS-10-530 | 530 | 495 | 17.5 |
| MAIS-10-540 | 540 | 505 | 17.5 |
| MAIS-10-550 | 550 | 515 | 17.5 |
| MAIS-10-560 | 560 | 525 | 17.5 |
| MAIS-10-565 | 565 | 530 | 17.5 |
| MAIS-10-570 | 570 | 535 | 17.5 |
| MAIS-10-580 | 580 | 545 | 17.5 |
| MAIS-10-590 | 590 | 555 | 17.5 |
| MAIS-10-600 | 600 | 565 | 17.5 |
| MAIS-10-610 | 610 | 575 | 17.5 |
| MAIS-10-620 | 620 | 585 | 17.5 |
| MAIS-10-630 | 630 | 595 | 17.5 |
| MAIS-10-640 | 640 | 605 | 17.5 |
| MAIS-10-650 | 650 | 615 | 17.5 |
| MAIS-10-655 | 655 | 620 | 17.5 |
| MAIS-10-660 | 660 | 625 | 17.5 |
| MAIS-10-670 | 670 | 635 | 17.5 |
| MAIS-10-680 | 680 | 645 | 17.5 |
| MAIS-10-690 | 690 | 655 | 17.5 |
| MAIS-10-700 | 700 | 665 | 17.5 |
| MAIS-10-710 | 710 | 675 | 17.5 |
| MAIS-10-720 | 720 | 685 | 17.5 |
| MAIS-10-730 | 730 | 695 | 17.5 |
| MAIS-10-740 | 740 | 705 | 17.5 |
| MAIS-10-750 | 750 | 715 | 17.5 |
| MAIS-10-765 | 760 | 725 | 17.5 |
| MAIS-10-770 | 770 | 730 | 20 |
| MAIS-10-780 | 780 | 740 | 20 |
| MAIS-10-940 | 940 | 900 | 20 |
| MAIS-10-980 | 980 | 940 | 20 |
| MAIS-10-1000 | 1000 | 960 | 20 |
| MAIS-10-1050 | 1050 | 1010 | 20 |
| MAIS-10-1090 | 1090 | 1050 | 20 |
| MAIS-10-1100 | 1100 | 1060 | 20 |
| MAIS-10-1120 | 1120 | 1080 | 20 |
| MAIS-10-1160 | 1160 | 1120 | 20 |
| MAIS-10-1400 | 1400 | 1360 | 20 |
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