IUH type Special Packing for Rod Seals
Brand :
NOK
Caution
Product Description
Main applicable fluid
● Nitrile rubber (A305), (G928)
- General petroleum hydraulic fluid oil.
- Water-glycol type hydraulic fluid oil.
- Oil-water emulsion type hydraulic fluid oil.
● Nitrile rubber (A567)
- Low temperature petroleum hydraulic fluid oil (General petroleum hydraulic fluid oil) Note: When using general petroleum-derived operating oil, we recommend A527.
Feature
- Packing with small section can be fitted in integrated groove.
- Improvement is made to prevent the damage caused by back pressure.
- Material with excellent cold resistance, nitrile rubber A567 is also available. This can be used for special low temperature oil (MIL H 5606E).
Dimension
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Special Packing for Rod Seals
R = 0.3 or below
R1 = 0.5 or below
The surface of the rod should be finished by buffing (SPBF) to 0.8 to 1.6 μmRz (0.2 to 0.4 μmRz).
•The roughness is JIS B 2601 : 2001. When regulation length cannot be kept, apply Pt.
How to Determine B dimension
■ When using backup ring. Please determine B dimension according to the table below.
■ When not using backup ring.
To determine B dimension, please refer to the graph in the right for the maximum extrusion gap (one side)
considering the eccentricity of operating condition of the rod.
.jpg)
Specification Table
IUH type Nitrile rubber (NBR)+ Hydrogenated nitrile rubber (HNBR)
Material : Standard : NOK A505 / Cold Resistant type : NOK A567 / Heat Resistant type : NOK G928
.jpg)
Special Packing for Rod Seals
R = 0.3 or below
R1 = 0.5 or below
The surface of the rod should be finished by buffing (SPBF) to 0.8 to 1.6 μmRz (0.2 to 0.4 μmRz).
•The roughness is JIS B 2601 : 2001. When regulation length cannot be kept, apply Pt.
How to Determine B dimension
■ When using backup ring. Please determine B dimension according to the table below.
| Maximum Service Pressure | 14MPa | 21MPa |
| Material of Backup ring | 19YF | |
| B dimension | B ≦ ø D + 1.0 | B ≦ ø D + 0.5 |
■ When not using backup ring.
To determine B dimension, please refer to the graph in the right for the maximum extrusion gap (one side)
considering the eccentricity of operating condition of the rod.
.jpg)
Specification Table
IUH type Nitrile rubber (NBR)+ Hydrogenated nitrile rubber (HNBR)
Material : Standard : NOK A505 / Cold Resistant type : NOK A567 / Heat Resistant type : NOK G928
| Nominal size of Packing, and Housing dimensions | Packing Part Number | Combination Backup Ring Part Number | |||||||
| d | D | h | HA | HB | C | Standard （A505） | Cold Resistant （A567） | Heat Resistant (G928) | BRT2 (Bias-cut) 19YF |
| 14 | 22 | 5 | 5.7 | 7.7 | 2.5 | ● CU2692N1 | GN5719V0 | ||
| 16 | 24 | 5 | 5.7 | 7.7 | 2.5 | ● CU2548N0 | GN5720V0 | ||
| 18 | 26 | 5 | 5.7 | 7.7 | 2.5 | CU0180N2 | GN4778V0 | ||
| 20 | 28 | 5 | 5.7 | 7.7 | 2.5 | CU0212N3 | CU0212N5 | GN4780V0 | |
| 22.4 | 30 | 5 | 5.7 | 7.7 | 2.5 | CU3488N0 | GN4784V0 | ||
| 25 | 33 | 5 | 5.7 | 7.7 | 2.5 | CU0276N3 | CU0276N5 | GN5019V1 | |
| 28 | 35.5 | 5 | 5.7 | 8.7 | 2.5 | CU0320N0 | GN4791V0 | ||
| 30 | 40 | 6 | 7 | 10 | 3 | CU0357N3 | CU0357N5 | GN4794V0 | |
| 35 | 45 | 6 | 7 | 10 | 3 | CU0424N3 | CU0424N5 | GN4799V0 | |
| 35.5 | 45 | 6 | 7 | 10 | 3 | CU0451N2 | GN4801V0 | ||
| 36 | 46 | 6 | 7 | 10 | 3 | CU3040N0 | GN5733V0 | ||
| 40 | 50 | 6 | 7 | 10 | 3 | CU0497N4 | CU0497N6 | GN4050V0 | |
| 45 | 55 | 6 | 7 | 10 | 3 | CU0567N4 | CU0567N6 | GN4804V0 | |
| 45 | 56 | 7 | 8 | 11 | 3 | CU0572N1 | GN4805V0 | ||
| 50 | 60 | 6 | 7 | 10 | 3 | CU0619N3 | CU0619N5 | CU0619N6 | GN4335V0 |
| 53 | 63 | 6 | 7 | 10 | 3 | CU0679N0 | GN4693V0 | ||
| 55 | 65 | 6 | 7 | 10 | 3 | CU0694N3 | CU0694N5 | CU0694N6 | GN4810V0 |
| 56 | 66 | 6 | 7 | 10 | 3 | CU0722N2 | GN4766V0 | ||
| 60 | 70 | 6 | 7 | 10 | 3 | CU0746N3 | CU0746N6 | CU0746N8 | GN4676V0 |
| 63 | 73 | 6 | 7 | 10 | 3 | CU0786N2 | GN4814V0 | ||
| 65 | 75 | 6 | 7 | 10 | 3 | CU0809N2 | CU0809N4 | CU0809N6 | GN4816V0 |
| 65 | 80 | 9 | 10 | 13 | 4 | CU3615N0 | GN4549V0 | ||
| 67 | 77 | 6 | 7 | 10 | 3 | CU0828N0 | GN4697V0 | ||
| 70 | 80 | 6 | 7 | 10 | 4 | CU0849N0 | CU0849N2 | GN4651V0 | |
| 70 | 85 | 9 | 10 | 13 | 4 | CU0857N2 | CU0857N3 | CU0857N4 | GN4876V0 |
| 71 | 80 | 6 | 7 | 10 | 4 | CU0879N0 | GN4818V0 | ||
| 75 | 85 | 6 | 7 | 10 | 4 | CU0901N4 | CU0901N6 | CU0901N8 | GN4692V0 |
| 75 | 90 | 9 | 10 | 13 | 4 | CU3090N2 | CU3090N4 | GN4971V0 | |
| 80 | 90 | 6 | 7 | 10 | 4 | CU0939N3 | CU0939N4 | CU0939N6 | GN4820V0 |
| 80 | 95 | 9 | 10 | 13 | 4 | CU3091N2 | CU3091N4 | GN5023V0 | |
| 85 | 100 | 9 | 10 | 13 | 4 | CU0984N1 | CU0984N3 | GN4687V0 | |
| 85 | 105 | 12 | 13 | 16 | 5.5 | CU0989N0 | GN4821V0 | ||
| 90 | 105 | 9 | 10 | 13 | 4 | CU1024N3 | CU1024N5 | CU1024N6 | GN4698V0 |
| 90 | 110 | 12 | 13 | 16 | 5.5 | CU1030N0 | GN4109V0 | ||
| 95 | 110 | 9 | 10 | 13 | 4 | CU1051N2 | CU1051N5 | CU1051N7 | GN4822V0 |
| 95 | 115 | 12 | 13 | 16 | 5.5 | CU1056N0 | GN4823V0 | ||
| 100 | 115 | 9 | 10 | 13 | 4 | CU1082N3 | CU1082N5 | CU1082N7 | GN4512V0 |
| 100 | 120 | 12 | 13 | 16 | 5.5 | CU1089N1 | CU1089N2 | GN4119V0 | |
| 105 | 120 | 9 | 10 | 13 | 4 | CU1125N1 | CU1125N2 | CU1125N4 | GN5198V0 |
| 105 | 125 | 12 | 13 | 16 | 5.5 | CU1128N0 | GN4825V0 | ||
| 105 | 125 | 15 | 16 | 19 | 5.5 | CU1129N0 | GN4825V0 | ||
| 110 | 125 | 9 | 10 | 13 | 4 | CU1157N3 | CU1157N5 | CU1157N6 | GN4480V0 |
| 110 | 130 | 15 | 16 | 19 | 5.5 | CU1165N0 | GN4280V1 | ||
| 112 | 125 | 8.5 | 9.5 | 12.5 | 4 | CU1178N0 | GN4827V0 | ||
| 115 | 130 | 9 | 10 | 13 | 4 | CU1195N0 | CU1195N1 | CU1195N2 | GN4593V0 |
| 115 | 135 | 16 | 17 | 20 | 5.5 | CU1184N0 | GN4574V0 | ||
| 120 | 135 | 9 | 10 | 13 | 4 | CU1220N3 | CU1220N2 | CU1220N4 | GN5036V0 |
| 120 | 140 | 15 | 16 | 19 | 5.5 | CU1224N0 | GN4132V0 | ||
| 125 | 140 | 9 | 10 | 13 | 4 | CU1252N3 | CU1252N5 | CU01252-N7A | GN4481V0 |
| 130 | 145 | 9 | 10 | 13 | 4 | CU1280N0 | CU1280N1 | CU1280N2 | GN4628V1 |
| 130 | 150 | 16 | 17 | 20 | 5.5 | CU2771N0 | GN4142V0 | ||
| 135 | 150 | 9 | 10 | 13 | 4 | CU2264N2 | CU2264N0 | GN5025V0 | |
| 140 | 155 | 9 | 10 | 13 | 4 | CU1323N2 | CU1323N3 | CU01323-N5A | GN4526V0 |
| 145 | 160 | 9 | 10 | 13 | 4 | CU1343N0 | GN4551V0 | ||
| 150 | 165 | 9 | 10 | 13 | 4 | CU1359N2 | CU1359N4 | CU01359-N5A | GN4833V0 |
| 160 | 175 | 9 | 10 | 14 | 4 | CU1406N1 | GN4835V0 | ||
| 170 | 190 | 12 | 13 | 17 | 5.5 | CU3494N1 | CU3494N0 | CU3494N2 | GN4529V0 |
| 180 | 200 | 12 | 13 | 17 | 5.5 | CU1483N2 | CU1483N3 | GN4470V0 | |
| 190 | 215 | 16 | 17 | 21 | 7 | CU3523N0 | CU3523N2 | GN4577V0 | |
| 200 | 225 | 16 | 17 | 21 | 7 | CU1548N1 | GN4560V0 | ||
| 210 | 235 | 16 | 17 | 21 | 7 | CU3640N0 | GN5758V0 | ||
| 220 | 245 | 16 | 17 | 21 | 7 | CU3630N0 | CU3630N1 | GN5754V0 | |
| 240 | 265 | 19 | 20 | 24 | 7 | CU3335N1 | GN4428V1 | ||