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Piston Seals
Sealing ring: F-PTFE
Elastic ring: NBR
L ring: POM or PA
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Application Range
JGDA is a combined sealing ring which is consisted of one sealing ring, two L-type POM or PA support rings and one O-ring with force application. The support ring plays the role of supporting and guiding to ensure tight sealing environment. The sliding ring relies on the force application of the O-ring to squeeze the piston and offers sealing function. JGDA can be used in mineral oil, water-based lubricant, modified water-based lubricant and other liquids.
Please refer to the standards of GGDA series of Hunger Company when designing and selecting.
Working Conditions
| Speed | PressureRange | TemperatureRange | Media | AvailableDiameter Range |
| 1m/s | 0~45MPa | -30℃ +100℃ | Petroleum base hydraulic oil, fire-resistant hydraulic fluid, water and others | 40-1000mm |
Installation Dimension
| DH8 | dh9 | L+0.2 | H |
| <96 | D-16.8 | 8 | 7.5 |
| 96-190 | D-20 | 10 | 9.5 |
| 191-380 | D-28 | 13 | 12.5 |
| 381-1000 | D-36 | 20 | 19.5 |
Specification Table
| Order No. | DH8 | dh9 | H | L | e |
| MAIS-33-40 | 40 | 23.2 | 7.5 | 8 | 7 |
| MAIS-33-45 | 45 | 28.2 | 7.5 | 8 | 7 |
| MAIS-33-50 | 50 | 33.2 | 7.5 | 8 | 7 |
| MAIS-33-56 | 56 | 39.2 | 7.5 | 8 | 7 |
| MAIS-33-63 | 63 | 46.2 | 7.5 | 8 | 7 |
| MAIS-33-65 | 65 | 48.2 | 7.5 | 8 | 7 |
| MAIS-33-70 | 70 | 53.2 | 7.5 | 8 | 7 |
| MAIS-33-75 | 75 | 58.2 | 7.5 | 0 | 7 |
| MAIS-33-80 | 80 | 63.2 | 7.5 | 8 | 7 |
| MAIS-33-85 | 85 | 68.2 | 7.5 | 8 | 7 |
| MAIS-33-90 | 90 | 73.2 | 7.5 | 8 | 7 |
| MAIS-33-95 | 95 | 78.2 | 7.5 | 8 | 7 |
| MAIS-33-100 | 100 | 80 | 9.5 | 10 | 10 |
| MAIS-33-105 | 105 | 85 | 9.5 | 10 | 10 |
| MAIS-33-110 | 110 | 90 | 9.5 | 10 | 10 |
| MAIS-33-115 | 115 | 95 | 9.5 | 10 | 10 |
| MAIS-33-120 | 120 | 100 | 9.5 | 10 | 10 |
| MAIS-33-125 | 125 | 105 | 9.5 | 10 | 10 |
| MAIS-33-130 | 130 | 110 | 9.5 | 10 | 10 |
| MAIS-33-135 | 135 | 115 | 9.5 | 10 | 10 |
| MAIS-33-140 | 140 | 120 | 9.5 | 10 | 10 |
| MAIS-33-340 | 340 | 312 | 12.5 | 13 | 15 |
| MAIS-33-350 | 350 | 322 | 12.5 | 13 | 15 |
| MAIS-33-360 | 360 | 332 | 12.5 | 13 | 15 |
| MAIS-33-380 | 380 | 352 | 12.5 | 13 | 15 |
| MAIS-33-400 | 400 | 364 | 19.5 | 20 | 15 |
| MAIS-33-420 | 420 | 384 | 19.5 | 20 | 15 |
| MAIS-33-425 | 425 | 389 | 19.5 | 20 | 15 |
| MAIS-33-450 | 450 | 414 | 19.5 | 20 | 15 |
| MAIS-33-480 | 480 | 444 | 19.5 | 20 | 15 |
| MAIS-33-500 | 500 | 464 | 19.5 | 20 | 15 |
| MAIS-33-560 | 560 | 524 | 19.5 | 20 | 18 |
| MAIS-33-600 | 600 | 564 | 19.5 | 20 | 18 |
| Order No. | DH8 | dh9 | H | L | e |
| MAIS-33-145 | 145 | 125 | 9.5 | 10 | 10 |
| MAIS-33-150 | 150 | 130 | 9.5 | 10 | 10 |
| MAIS-33-150 | 155 | 135 | 9.5 | 10 | 10 |
| MAIS-33-160 | 160 | 140 | 9.5 | 10 | 10 |
| MAIS-33-170 | 170 | 150 | 9.5 | 10 | 10 |
| MAIS-33-180 | 180 | 160 | 9.5 | 10 | 10 |
| MAIS-33-190 | 190 | 170 | 9.5 | 10 | 10 |
| MAIS-33-200 | 200 | 172 | 12.5 | 13 | 12 |
| MAIS-33-210 | 210 | 182 | 12.5 | 13 | 12 |
| MAIS-33-220 | 220 | 192 | 12.5 | 13 | 12 |
| MAIS-33-225 | 225 | 197 | 12.5 | 13 | 12 |
| MAIS-33-235 | 235 | 207 | 12.5 | 13 | 12 |
| MAIS-33-240 | 240 | 212 | 12.5 | 13 | 12 |
| MAIS-33-250 | 250 | 222 | 12.5 | 13 | 12 |
| MAIS-33-265 | 265 | 237 | 12.5 | 13 | 12 |
| MAIS-33-275 | 275 | 247 | 12.5 | 13 | 12 |
| MAIS-33-280 | 280 | 252 | 12.5 | 13 | 12 |
| MAIS-33-290 | 290 | 262 | 12.5 | 13 | 12 |
| MAIS-33-300 | 300 | 272 | 12.5 | 13 | 12 |
| MAIS-33-310 | 310 | 282 | 12.5 | 13 | 15 |
| MAIS-33-320 | 320 | 292 | 12.5 | 13 | 15 |
| MAIS-33-630 | 630 | 594 | 19.5 | 20 | 18 |
| MAIS-33-650 | 650 | 614 | 19.5 | 20 | 18 |
| MAIS-33-700 | 700 | 664 | 19.5 | 20 | 18 |
| MAIS-33-720 | 720 | 684 | 19.5 | 20 | 18 |
| MAIS-33-750 | 750 | 714 | 19.5 | 20 | 18 |
| MAIS-33-780 | 780 | 744 | 19.5 | 20 | 18 |
| MAIS-33-800 | 800 | 764 | 19.5 | 20 | 18 |
| MAIS-33-850 | 850 | 814 | 19.5 | 20 | 18 |
| MAIS-33-900 | 900 | 864 | 19.5 | 20 | 18 |
| MAIS-33-950 | 950 | 914 | 19.5 | 20 | 18 |
| MAIS-33-980 | 980 | 944 | 19.5 | 20 | 18 |
| MAIS-33-1000 | 1000 | 964 | 19.5 | 20 | 18 |
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