OUIS Special Packing for Piston Seal (Installed with Internal Groove)
Brand :
NOK
Caution
Product Description
Main application fluid
- General petroleum hydraulic fluid.
Feature
- Designed for smaller section, and able to be fitted into integrated groove.
- Heat resistant material is employed, also has a good water resistance and durability.
- Improvement has been made to prevent damages caused by back pressure.
Dimension
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Special Packing for Piston seals
R = 0.3 or below, R1 = 0.5 or below, R2 = 1
The inner surface of the cylinder tube should be finished by bernishing (RLB) or honing (GH) to 0.4 to 3.2 μmRz (0.1 to 0.8 μmRa).
Expecially under serve lubricating condition, burnishing is required. ● The roughness is JIS B 0601:2001. 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 detemine 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 piston.
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Specification Table
ODI type Iron rubber (PUR)
Material : Standard NOK U801 / Heat resistant type NOK U641
.jpg)
Special Packing for Piston seals
R = 0.3 or below, R1 = 0.5 or below, R2 = 1
The inner surface of the cylinder tube should be finished by bernishing (RLB) or honing (GH) to 0.4 to 3.2 μmRz (0.1 to 0.8 μmRa).
Expecially under serve lubricating condition, burnishing is required. ● The roughness is JIS B 0601:2001. 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 | 35MPa |
| Material of Backup ring | 19YF | ||
| B dimension | B≧φD-1.0 | B≧φD-0.5 | B≧φD-0.2 |
| Maximum Service Pressure | 35MPa | 42MPa |
| Material of Backup ring | 80NP | |
| B dimension | B≧φD-0.8 | B≧φD-0.4 |
■ When not using backup ring.
To detemine 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 piston.
.jpg)
Specification Table
ODI type Iron rubber (PUR)
Material : Standard NOK U801 / Heat resistant type NOK U641
| Nominal size of Packing, and housing dimensions | Packing Part Number | Combination Backup Ring Part Number | ||||||||
| D | d | h | HA | HB | φD1 | C | Standard （U801） | Heat Resistant （U641） | BRT2 (Biascut) 19YF | BRN2 (Biascut) 80NP |
| 40 | 30 | 6 | 7 | 10 | 39 | 2.5 | FU0490P1 | FU0490P0 | GN4794V0 | GN9122O0 |
| 45 | 35 | 6 | 7 | 10 | 44 | 2.5 | FU0563P1 | FU0563P0 | GN4799V0 | GN9127O0 |
| 50 | 40 | 6 | 7 | 10 | 49 | 2.5 | FU0613P1 | FU0613P0 | GN4050V0 | GN9131O0 |
| 60 | 50 | 6 | 7 | 10 | 59 | 2.5 | FU0742P1 | FU0742P0 | GN4335V0 | GN9138O0 |
| 63 | 53 | 6 | 7 | 10 | 62 | 2.5 | FU0784P1 | FU0784P0 | GN4693V0 | GN9140O0 |
| 65 | 55 | 6 | 7 | 10 | 64 | 2.5 | FU0807P1 | FU0807P0 | GN4810V0 | GN9141O0 |
| 70 | 60 | 6 | 7 | 10 | 69 | 2.5 | FU0846P1 | FU0846P0 | GN4676V0 | GN9144O0 |
| 75 | 65 | 6 | 7 | 10 | 74 | 2.5 | FU0897P1 | FU0897P0 | GN4816V0 | GN9149O0 |
| 80 | 70 | 6 | 7 | 10 | 79 | 2.5 | FU0936P1 | FU0936P0 | GN4651V0 | GN9092O0 |
| 80 | 71 | 6 | 7 | 10 | 79 | 2.5 | FU2146P1 | FU2146P0 | GN4818V0 | GN9152O0 |
| 85 | 75 | 6 | 7 | 10 | 84 | 2.5 | FU0979P1 | FU0979P0 | GN4692V0 | GN9241O0 |
| 90 | 80 | 6 | 7 | 10 | 89 | 2.5 | FU1019P1 | FU1019P0 | GN4820V0 | GN9155O0 |
| 100 | 85 | 9 | 10 | 13 | 98 | 4 | FU1078P1 | FU1078P0 | GN4687V0 | GN9091O0 |
| 105 | 90 | 9 | 10 | 13 | 103 | 4 | FU1120P1 | FU1120P0 | GN4698V0 | GN9158O0 |
| 110 | 95 | 9 | 10 | 13 | 108 | 4 | FU1152P1 | FU1152P0 | GN4822V0 | GN9160O0 |
| 115 | 100 | 9 | 10 | 13 | 113 | 4 | FU1193P0 | FU1193P1 | GN4512V0 | GN9163O0 |
| 120 | 105 | 9 | 10 | 13 | 118 | 4 | FU1212P1 | FU1212P0 | GN5198V0 | GN9589O0 |
| 125 | 112 | 8.5 | 9.5 | 12.5 | 123 | 4 | FU2903P0 | FU2903P1 | GN4827V0 | GN9167O0 |
| 125 | 112 | 9 | 10 | 13 | 123 | 4 | FU1926P1 | FU1926P0 | GN4827V0 | GN9167O0 |
| 130 | 115 | 9 | 10 | 13 | 128 | 4 | FU1278P1 | FU1278P0 | GN4593V0 | GN9274O0 |
| 140 | 125 | 9 | 10 | 13 | 138 | 4 | FU1320P1 | FU1320P0 | GN4481V0 | GN9170O0 |
| 150 | 135 | 9 | 10 | 13 | 148 | 4 | FU1356P1 | FU1356P0 | GN5025V0 | GN9539O0 |
| 150 | 136 | 8.5 | 9.5 | 12.5 | 148 | 4 | FU2149P0 | FU2149P1 | GN4830V0 | GN9173O0 |
| 160 | 145 | 9 | 10 | 13 | 158 | 4 | FU1404P1 | FU1404P0 | GN4551V0 | GN9175O0 |
| 170 | 155 | 9 | 10 | 14 | 168 | 4 | FU1441P1 | FU1441P0 | GN4834V0 | GN9178O0 |
| 175 | 160 | 9 | 10 | 14 | 173 | 4 | FU1458P0 | FU1458P1 | GN4835V0 | GN9180O0 |
| 180 | 165 | 9 | 10 | 14 | 178 | 4 | FU1481P1 | FU1481P0 | GN4836V0 | GN9182O0 |
| 190 | 175 | 9 | 10 | 14 | 188 | 4 | FU1511P1 | FU1511P0 | GN4839V0 | GN9185O0 |
| 200 | 180 | 12 | 13 | 17 | 198 | 5 | FU1539P1 | FU1539P0 | GN4470V0 | GN9187O0 |
| 224 | 204 | 12 | 13 | 17 | 222 | 5 | FU1606P1 | FU1606P0 | GN4842V0 | GN9193O0 |
| 250 | 230 | 12 | 13 | 17 | 248 | 5 | FU1675P1 | FU1675P0 | GN4635V0 | GN9047O0 |