Hydraulic Ok Piston Seals Compact NBR Hpt/Ok Seals
HPT
Quantity:
1. Application and properties
It consists of a sliding ring with an open Z-shaped mouth and a square rubber elastomer.
Suitable for double-acting hydraulic sealing of reciprocating motion piston, has a wide range of adaptability to working pressure, and has good sealing performance at high, medium and low pressures. It is particularly suitable for heavy-duty hydraulic cylinders and can be used for high-pressure and ultra-high-pressure cylinders.
The cross-section is small, and the groove size for installation is small.
The friction coefficients during startup and operation are small, and the hydraulic cylinder runs smoothly.
The sliding ring has an opening, which is easy to install and does not require special installation tools.
Good wear resistance, high pressure resistance, strong anti-extrusion ability and good impact resistance.
2. Standard material
Slip ring：HPT
Elastomer：NBR
3. Working conditions
Working Conditions | ||||
Diameter Range | Pressure Range | Temperature Range°C | Speed | Medium |
40-500mm | 0～80MPa | -30～110 | 1.0m/s | hydraulic oil |
4. Related Dimensions
R1=0.2-0.5; R2=0.3～0.5; C=(0.5～1.0)L；The specific value is selected according to the size of the section of the seal, and the remaining values are listed in the Installation Dimensions table.
5.Marking method
Mark it with the dimension of installation groove as below：
HPT “Bore Diameter D” × “Groove Diameter d” × “Groove Width L”
For example: HPT100×79×8 means , Groove Dimension: Bore Dia. 100, Groove Dia.79, Groove width 8
6.Installation Dimensions
| Bore | Groove | Groove | Radial | Bore | Groove | Groove | Radial | |
| Dia. | Dia. | Width | Clearance e | Dia. | Dia. | Width | Clearance e | |
| D | d | L | e | D | d | L | e | |
| 40 | 29 | 4.2 | 0.35 | 115 | 94 | 8 | 0.6 | |
| 45 | 34 | 4.2 | 0.35 | 120 | 99 | 8 | 0.6 | |
| 50 | 39 | 4.2 | 0.35 | 125 | 104 | 8 | 0.6 | |
| 60 | 49 | 4.2 | 0.35 | 130 | 109 | 8 | 0.6 | |
| 55 | 39.5 | 6.3 | 0.5 | 135 | 114 | 8 | 0.6 | |
| 63 | 47.5 | 6.3 | 0.5 | 140 | 119 | 8 | 0.6 | |
| 70 | 54.5 | 6.3 | 0.5 | 145 | 124 | 8 | 0.6 | |
| 75 | 59.5 | 6.3 | 0.5 | 150 | 129 | 8 | 0.6 | |
| 80 | 64.5 | 6.3 | 0.5 | 160 | 139 | 8 | 0.6 | |
| 90 | 74.5 | 6.3 | 0.5 | 165 | 144 | 8 | 0.6 | |
| 100 | 84.5 | 6.3 | 0.5 | 170 | 149 | 8 | 0.6 | |
| 63 | 44.7 | 7 | 0.4 | 175 | 154 | 8 | 0.6 | |
| 75 | 54 | 8 | 0.4 | 180 | 159 | 8 | 0.6 | |
| 80 | 59 | 8 | 0.5 | 185 | 164 | 8 | 0.6 | |
| 85 | 64 | 8 | 0.5 | 190 | 169 | 8 | 0.6 | |
| 90 | 69 | 8 | 0.5 | 195 | 174 | 8 | 0.6 | |
| 95 | 74 | 8 | 0.5 | 220 | 199 | 8 | 0.8 | |
| 100 | 89 | 4.2 | 0.35 | 230 | 209 | 8 | 0.8 | |
| 100 | 79 | 8 | 0.6 | 250 | 229 | 8 | 0.8 | |
| 105 | 84 | 8 | 0.6 | 260 | 239 | 8 | 0.8 | |
| 110 | 89 | 8 | 0.6 | |||||
