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Rotary Seals
Sealing ring: F-PTFE
Check ring: POM or PA
O-ring: NBR
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Application Range
JRDA combined rotary sealing consists of one sealing ring, one O-ring of elastic force application and two check rings; the profile of sealing face is specially designed to adapt high pressure and low speed; the back of sealing ring is designed to be concave arc shape to increase the contact surface and avoid the sealing ring rotating along with rod or shaft; it can be applied for engineering machinery, construction machinery and automobile equipment.
Please refer to the standards of RDA series of Hunger Company when designing.
Features
No crawling while starting up and no stiction phenomenon
Small friction force
Simple groove with small dimension
Well abrasion resistance and dimension stability
Working Conditions
| Speed | Pressure Range | Temperature Range | Media | AvailableDiameter Range |
| 0.5m/s | 0~36MPa | -36℃ +100℃ | Petroleum base hydraulic oil, fire-resistant fluid, biological oil, water, gas, etc., depending onmaterials of O-ring | 50-1000mm |
Installation Dimension
| Cylinder Diameter | Bottom Diameter | Sealing Width | Groove Width | Guiding Clearance S | |
| D H8 | d h9 | H | L+0.2 | 0-10MPa | 15-36MPa |
| 50-124 | D-16 | 7.5 | 8 | 0.45-0.35 | 0.35-0.30 |
| 125-199 | D-20 | 9.5 | 10 | 0.55-.045 | 0.45-0.35 |
| 200-600 | D-26 | 12.5 | 13 | 0.60-0.55 | 0.55-0.45 |
Specification Table
| Order No. | DH8 | dh9 | H | L | e |
| MAIS-35-50 | 50 | 34 | 7.5 | 8 | 7 |
| MAIS-35-56 | 56 | 40 | 7.5 | 8 | 7 |
| MAIS-35-63 | 63 | 47 | 7.5 | 8 | 7 |
| MAIS-35-70 | 70 | 54 | 7.5 | 8 | 7 |
| MAIS-35-80 | 80 | 64 | 7.5 | 8 | 7 |
| MAIS-35-90 | 90 | 74 | 7.5 | 8 | 7 |
| MAIS-35-95 | 95 | 79 | 7.5 | 8 | 7 |
| MAIS-35-100 | 100 | 84 | 7.5 | 8 | 10 |
| MAIS-35-110 | 110 | 94 | 7.5 | 8 | 10 |
| MAIS-35-115 | 115 | 99 | 7.5 | 8 | 10 |
| MAIS-35-120 | 120 | 104 | 7.5 | 8 | 10 |
| MAIS-35-125 | 125 | 105 | 9.5 | 10 | 10 |
| MAIS-35-130 | 130 | 110 | 9.5 | 10 | 10 |
| MAIS-35-140 | 140 | 120 | 9.5 | 10 | 10 |
| MAIS-35-150 | 150 | 130 | 9.5 | 10 | 10 |
| MAIS-35-160 | 160 | 140 | 9.5 | 10 | 10 |
| MAIS-35-180 | 180 | 160 | 9.5 | 10 | 10 |
| MAIS-35-190 | 190 | 170 | 9.5 | 10 | 10 |
| Order No. | DH8 | dh9 | H | L | e |
| MAIS-35-200 | 200 | 174 | 12.5 | 10 | 12 |
| MAIS-35-220 | 220 | 194 | 12.5 | 10 | 12 |
| MAIS-35-225 | 225 | 199 | 12.5 | 10 | 12 |
| MAIS-35-250 | 250 | 224 | 12.5 | 10 | 12 |
| MAIS-35-280 | 280 | 254 | 12.5 | 10 | 12 |
| MAIS-35-290 | 290 | 264 | 12.5 | 10 | 12 |
| MAIS-35-300 | 300 | 274 | 12.5 | 10 | 12 |
| MAIS-35-320 | 320 | 294 | 12.5 | 10 | 15 |
| MAIS-35-350 | 350 | 324 | 12.5 | 13 | 15 |
| MAIS-35-380 | 380 | 354 | 12.5 | 13 | 15 |
| MAIS-35-400 | 400 | 374 | 12.5 | 13 | 15 |
| MAIS-35-420 | 420 | 394 | 12.5 | 13 | 15 |
| MAIS-35-450 | 450 | 424 | 12.5 | 13 | 15 |
| MAIS-35-480 | 480 | 454 | 12.5 | 13 | 15 |
| MAIS-35-500 | 500 | 474 | 12.5 | 13 | 15 |
| MAIS-35-560 | 560 | 534 | 12.5 | 13 | 15 |
| MAIS-35-580 | 580 | 554 | 12.5 | 13 | 15 |
| MAIS-35-600 | 600 | 574 | 12.5 | 13 | 15 |