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Piston Seals
Guide sleeve: PA or F-PTFE
Sealing ring: F-PTFE
Check ring: PA or F-PTFE
Elastic ring: NBR or FKM
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Application Range
JDKK combined sealing ring is consisted of sealing ring, elastic ring, two check rings and two guide sleeves. The guide sleeve plays the role of positioning and guiding; the elastic ring provides pre-tightening force and compensates the wear of the sealing ring; the sealing ring and the inner hole of the cylinder can form a copulate dual face to further create sealing effect. JDDK applies to the sealing of the cylinder piston and has bidirectional sealing effect.
Please refer to the standards of GD1000K series of Hunger Company when designing and selecting.
Working Conditions
| Speed | Pressure Range | Temperature Range | Media | AvailableDiameter Range |
| 1m/s | 0~45MPa | -30℃ +200℃ | Hydraulic oil, water and emulsion | 40-2000mm |
Specification Table
| Order No. | D | d | b | d2 | d3 | a | c | f | e |
| MAIS-23-40 | 40 | 26 | 32 | 32 | 36 | 3 | 15.5 | 8.25 | 7 |
| MAIS-23-45 | 45 | 31 | 32 | 37 | 41 | 3 | 15.5 | 8.25 | 7 |
| MAIS-23-50 | 50 | 34 | 39 | 42 | 46 | 3 | 20.5 | 9.25 | 7 |
| MAIS-23-56 | 56 | 40 | 39 | 48 | 52 | 3 | 20.5 | 9.25 | 7 |
| MAIS-23-63 | 63 | 47 | 39 | 55 | 59 | 3 | 20.5 | 9.25 | 7 |
| MAIS-23-65 | 65 | 49 | 39 | 57 | 61 | 3 | 20.5 | 9.25 | 7 |
| MAIS-23-70 | 70 | 54 | 39 | 62 | 66 | 3 | 20.5 | 9.25 | 7 |
| MAIS-23-75 | 75 | 59 | 39 | 67 | 71 | 3 | 20.5 | 9.25 | 7 |
| MAIS-23-80 | 80 | 62 | 43 | 72 | 76 | 3 | 22.5 | 10.25 | 7 |
| MAIS-23-85 | 85 | 67 | 43 | 77 | 81 | 3 | 22.5 | 10.25 | 7 |
| MAIS-23-90 | 90 | 72 | 43 | 82 | 86 | 3 | 22.5 | 10.25 | 7 |
| MAIS-23-95 | 95 | 77 | 43 | 87 | 91 | 3 | 22.5 | 10.25 | 7 |
| MAIS-23-100 | 100 | 82 | 43 | 92 | 96 | 3 | 22.5 | 10.25 | 10 |
| MAIS-23-110 | 110 | 92 | 43 | 102 | 106 | 3 | 22.5 | 10.25 | 10 |
| MAIS-23-115 | 115 | 97 | 43 | 107 | 111 | 3 | 22.5 | 10.25 | 10 |
| MAIS-23-120 | 120 | 102 | 43 | 112 | 116 | 3 | 22.5 | 10.25 | 10 |
| MAIS-23-125 | 125 | 103 | 53 | 115 | 121 | 4 | 26.5 | 13.25 | 10 |
| MAIS-23-130 | 130 | 108 | 53 | 120 | 126 | 4 | 26.5 | 13.25 | 10 |
| MAIS-23-140 | 140 | 118 | 53 | 130 | 136 | 4 | 26.5 | 13.25 | 10 |
| MAIS-23-150 | 150 | 128 | 53 | 140 | 146 | 4 | 26.5 | 13.25 | 10 |
| MAIS-23-160 | 160 | 138 | 53 | 150 | 156 | 4 | 26.5 | 13.25 | 10 |
| MAIS-23-170 | 170 | 148 | 57 | 160 | 166 | 6 | 26.5 | 15.25 | 10 |
| MAIS-23-180 | 180 | 158 | 57 | 170 | 176 | 6 | 26.5 | 15.25 | 10 |
| MAIS-23-190 | 190 | 165 | 64 | 180 | 186 | 4.5 | 31.5 | 16.25 | 10 |
| MAIS-23-200 | 200 | 175 | 64 | 190 | 196 | 4.5 | 31.5 | 16.25 | 10 |
| MAIS-23-210 | 210 | 185 | 71 | 200 | 206 | 8 | 31.5 | 19.75 | 12 |
| MAIS-23-220 | 220 | 195 | 71 | 210 | 216 | 8 | 31.5 | 19.75 | 12 |
| MAIS-23-225 | 225 | 200 | 71 | 215 | 221 | 8 | 31.5 | 19.75 | 12 |
| MAIS-23-230 | 230 | 205 | 85 | 220 | 226 | 15 | 31.5 | 26.75 | 12 |
| MAIS-23-240 | 240 | 205 | 85 | 230 | 236 | 15 | 31.5 | 26.75 | 12 |
| MAIS-23-250 | 250 | 225 | 85 | 240 | 246 | 15 | 31.5 | 26.75 | 12 |
| MAIS-23-275 | 275 | 250 | 85 | 265 | 271 | 15 | 31.5 | 26.75 | 12 |
| MAIS-23-280 | 280 | 255 | 85 | 270 | 276 | 15 | 31.5 | 26.75 | 12 |
| MAIS-23-290 | 290 | 265 | 85 | 280 | 286 | 15 | 31.5 | 26.75 | 12 |
| MAIS-23-300 | 300 | 275 | 85 | 290 | 296 | 15 | 31.5 | 26.75 | 12 |
| MAIS-23-310 | 310 | 280 | 80 | 298 | 304 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-320 | 320 | 290 | 80 | 308 | 314 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-350 | 350 | 320 | 80 | 338 | 344 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-360 | 360 | 330 | 80 | 348 | 354 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-380 | 380 | 350 | 80 | 368 | 374 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-400 | 400 | 370 | 80 | 388 | 394 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-420 | 420 | 390 | 80 | 408 | 414 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-450 | 450 | 420 | 80 | 438 | 444 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-480 | 480 | 450 | 80 | 468 | 474 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-500 | 500 | 470 | 80 | 488 | 494 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-540 | 540 | 510 | 80 | 528 | 534 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-560 | 560 | 530 | 80 | 548 | 554 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-580 | 580 | 550 | 80 | 568 | 574 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-600 | 600 | 570 | 80 | 588 | 594 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-630 | 630 | 600 | 80 | 618 | 624 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-640 | 640 | 610 | 80 | 628 | 634 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-650 | 650 | 620 | 80 | 638 | 644 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-680 | 680 | 650 | 80 | 668 | 674 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-700 | 700 | 670 | 80 | 688 | 694 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-750 | 750 | 720 | 80 | 738 | 744 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-800 | 800 | 770 | 80 | 788 | 794 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-1200 | 1200 | 1170 | 80 | 1188 | 1194 | 8.5 | 36.5 | 21.75 | 15 |
| MAIS-23-1400 | 1400 | 1370 | 80 | 1388 | 1394 | 8.5 | 36.5 | 21.75 | 15 |
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