USI type Packing for Both Piston and Rod Seals (Installed with Internal Groove)
Brand :
NOK
Caution
Product Description
Main applicable fluid
- General petroleum hydraulic fluid oil.
Feature
- This can be used both for piston and rod seals.
- This packing has small section and can be fitted in integrated groove.
- This is a type with smaller section of UPI.
- Improvement has been made to prevent damages caused by back pressure.
Note: When ordering a combined backup ring, please specify the NOK part number and model size.
Dimension
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R = 0.3 or below, R1 = 0.5 or below, R2 = 1 The inner surface of the cylinder tube should be finished by
The surface of the rod should be finished by buffing (SPBF) burnishing (RLB)or honing (GH) to 0.4 to 3.2 μmRz (0.1 to 0.8 μmRa).
to 0.8 to 1.6 μmRz (0.2 to 0.4 μmRz). Especially under severe lubricating condition, burnishing is required.
● 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 piston or rod.
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Specification Table
UPI type Iron rubber (PUR)
Material : NOK U593
Note: For ● marked product, Please use split groove, When using as the rod packing.
For ●○ Marked product. Please use split When using as the piston packing.
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R = 0.3 or below, R1 = 0.5 or below, R2 = 1 The inner surface of the cylinder tube should be finished by
The surface of the rod should be finished by buffing (SPBF) burnishing (RLB)or honing (GH) to 0.4 to 3.2 μmRz (0.1 to 0.8 μmRa).
to 0.8 to 1.6 μmRz (0.2 to 0.4 μmRz). Especially under severe lubricating condition, burnishing is required.
● 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 | For Rod seals | B ≦ ø D + 1.0 | B ≦ ø D + 0.5 |
| For Piston seals | 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 piston or rod.
.jpg)
Specification Table
UPI type Iron rubber (PUR)
Material : NOK U593
Note: For ● marked product, Please use split groove, When using as the rod packing.
For ●○ Marked product. Please use split When using as the piston packing.
| Nominal size of Packing, and Housing dimensions | Packing Part Number | Combination Backup Ring Part Number | ||||||
| d | D | h | HA | HB | φ D1 | C | BRT2 (Bias-cut) 19YF | |
| 10 | 18 | 5 | 5.7 | 7.7 | 17 | 2 | ● FU0064S0 | GN5132-V0 |
| 12 | 20 | 5 | 5.7 | 7.7 | 19 | 2 | ● FU2464S0 | GN5132-V0 |
| 12.5 | 20 | 5 | 5.7 | 7.7 | 19 | 2 | ● FU2465S0 | GN5132-V0 |
| 14 | 22 | 5 | 5.7 | 7.7 | 21 | 2 | ○ FU0116S0 | GN5132-V0 |
| 16 | 24 | 5 | 5.7 | 7.7 | 23 | 2 | ○ FU0150S0 | GN5132-V0 |
| 17 | 25 | 5 | 5.7 | 7.7 | 24 | 2 | ○ FU2466S0 | GN5132-V0 |
| 18 | 26 | 5 | 5.7 | 7.7 | 25 | 2 | ○ FU0180S0 | GN5132-V0 |
| 20 | 28 | 5 | 5.7 | 7.7 | 27 | 2 | ○ FU0212S0 | GN5132-V0 |
| 20 | 30 | 6 | 7 | 9 | 29 | 2 | ○ FU0214S0 | GN5132-V0 |
| 22 | 30 | 5 | 5.7 | 7.7 | 29 | 2 | ○ FU2467S0 | GN5132-V0 |
| 22.4 | 30 | 5 | 5.7 | 7.7 | 29 | 2 | ○ FU0260S0 | GN5132-V0 |
| 23.5 | 31.5 | 5 | 5.7 | 7.7 | 30.5 | 2 | ○ FU0267S0 | GN5132-V0 |
| 24 | 32 | 5 | 5.7 | 7.7 | 31 | 2 | ○ FU2468S0 | GN5132-V0 |
| 25 | 33 | 5 | 5.7 | 7.7 | 32 | 2.5 | ○ FU0276S0 | GN5132-V0 |
| 25 | 35 | 6 | 7 | 9 | 34 | 2.5 | ○ FU0279S0 | GN5132-V0 |
| 26 | 34 | 5 | 5.7 | 8.7 | 33 | 2.5 | ○ FU2469S0 | GN5132-V0 |
| 27 | 35 | 5 | 5.7 | 8.7 | 34 | 2.5 | FU2470S0 | GN5132-V0 |
| 28 | 35.5 | 5 | 5.7 | 8.7 | 34.5 | 2.5 | FU0320S0 | GN5132-V0 |
| 28 | 36 | 5 | 5.7 | 8.7 | 35 | 2.5 | FU0321S0 | GN5132-V0 |
| 30 | 38 | 5 | 5.7 | 8.7 | 37 | 2.5 | FU0355S0 | GN5132-V0 |
| 30 | 40 | 6 | 7 | 10 | 39 | 2.5 | FU0357S0 | GN5132-V0 |
| 31.5 | 41.5 | 6 | 7 | 10 | 40.5 | 2.5 | FU0382S0 | GN5132-V0 |
| 32 | 42 | 6 | 7 | 10 | 41 | 2.5 | FU2055S0 | GN5132-V0 |
| 33 | 43 | 6 | 7 | 10 | 42 | 2.5 | FU2471S0 | GN5132-V0 |
| 34 | 44 | 6 | 7 | 10 | 43 | 2.5 | FU2263S0 | GN5132-V0 |
| 35 | 45 | 6 | 7 | 10 | 44 | 2.5 | FU0424S0 | GN5132-V0 |
| 35.5 | 45 | 6 | 7 | 10 | 44 | 2.5 | FU0451S0 | GN5132-V0 |
| 35.5 | 45.5 | 6 | 7 | 10 | 44.5 | 2.5 | FU0452S0 | GN5132-V0 |
| 36 | 46 | 6 | 7 | 10 | 45 | 2.5 | FU2472S0 | GN5132-V0 |
| 38 | 48 | 6 | 7 | 10 | 47 | 2.5 | FU2240S0 | GN5132-V0 |
| 40 | 50 | 6 | 7 | 10 | 49 | 2.5 | FU0497S0 | GN5132-V0 |
| 45 | 55 | 6 | 7 | 10 | 54 | 2.5 | FU0567S0 | GN5132-V0 |
| 45 | 56 | 7 | 8 | 11 | 55 | 2.5 | FU0572S0 | GN5132-V0 |
| 46 | 56 | 6 | 7 | 10 | 55 | 2.5 | FU2662S0 | GN5132-V0 |
| 50 | 60 | 6 | 7 | 10 | 59 | 2.5 | FU0619S0 | GN5132-V0 |
| 53 | 63 | 6 | 7 | 10 | 62 | 2.5 | FU0679S0 | GN5132-V0 |
| 55 | 65 | 6 | 7 | 10 | 64 | 2.5 | FU0694S0 | GN5132-V0 |
| 56 | 66 | 6 | 7 | 10 | 65 | 2.5 | FU0722S0 | GN5132-V0 |
| 58 | 68 | 6 | 7 | 10 | 67 | 2.5 | FU2473S0 | GN5132-V0 |
| 60 | 70 | 6 | 7 | 10 | 69 | 2.5 | FU0746S0 | GN5132-V0 |
| 60 | 71 | 7 | 8 | 11 | 70 | 2.5 | FU0750S0 | GN5132-V0 |
| 61 | 71 | 6 | 7 | 10 | 70 | 2.5 | FU2474S0 | GN4629V0 |
| 63 | 73 | 6 | 7 | 10 | 72 | 2.5 | FU0786S0 | GN4814V0 |
| 65 | 75 | 6 | 7 | 10 | 74 | 2.5 | FU0809S0 | GN4816V0 |
| 67 | 77 | 6 | 7 | 10 | 76 | 2.5 | FU0828S0 | GN4697V0 |
| 70 | 80 | 6 | 7 | 10 | 79 | 2.5 | FU0849S0 | GN4651V0 |
| 71 | 80 | 6 | 7 | 10 | 79 | 2.5 | FU0879S0 | GN4818V0 |
| 75 | 85 | 6 | 7 | 10 | 84 | 2.5 | FU0901S0 | GN4692V0 |
| 80 | 90 | 6 | 7 | 10 | 89 | 2.5 | FU0939S0 | GN4820V0 |
| 80 | 95 | 9 | 10 | 13 | 94 | 4 | FU0942S0 | GN5023V0 |
| 85 | 95 | 6 | 7 | 10 | 94 | 4 | FU2475S0 | GN4757V0 |
| 85 | 100 | 9 | 10 | 13 | 99 | 4 | FU0984S0 | GN4687V0 |
| 86 | 100 | 8.5 | 9.5 | 12.5 | 99 | 4 | FU2476S0 | GN4982V1 |
| 89 | 104 | 9 | 10 | 13 | 103 | 4 | FU2372S0 | GN5734V0 |
| 90 | 100 | 6 | 7 | 10 | 99 | 4 | FU1021S0 | GN5735V0 |
| 90 | 105 | 9 | 10 | 13 | 104 | 4 | FU1024S0 | GN4698V0 |
| 95 | 110 | 9 | 10 | 13 | 109 | 4 | FU1051S0 | GN4822V0 |
| 96 | 111 | 9 | 10 | 13 | 110 | 4 | FU2477S0 | GN5736V0 |
| 98 | 112 | 8.5 | 9.5 | 12.5 | 111 | 4 | FU1067S0 | GN4824V0 |
| 100 | 115 | 9 | 10 | 13 | 113 | 4 | FU1082S0 | GN4512V0 |
| 105 | 120 | 9 | 10 | 13 | 118 | 4 | FU1125S0 | GN5198V0 |
| 106 | 120 | 8.5 | 9.5 | 12.5 | 118 | 4 | FU1135S0 | GN4826V0 |
| 110 | 125 | 9 | 10 | 13 | 123 | 4 | FU1157S0 | GN4480V0 |
| 112 | 125 | 9 | 10 | 13 | 123 | 4 | FU1179S0 | GN4827V0 |
| 115 | 130 | 9 | 10 | 13 | 128 | 4 | FU1195S0 | GN4593V0 |
| 118 | 132 | 8.5 | 9.5 | 12.5 | 130 | 4 | FU1204S0 | GN5414V0 |
| 125 | 140 | 9 | 10 | 13 | 138 | 4 | FU1252S0 | GN4481V0 |
| 132 | 145 | 8.5 | 9.5 | 12.5 | 143 | 4 | FU1291S0 | GN5737V0 |
| 136 | 150 | 8.5 | 9.5 | 12.5 | 148 | 4 | FU1306S0 | GN4830V0 |
| 145 | 160 | 9 | 10 | 13 | 158 | 4 | FU1343S0 | GN4551V0 |