Product Summary
Hydro-Static Seal is a hydro-static non-contact type mechanical seal that uses our porous carbon with uniform pores. It exhibits excellent sealing performance even under harsh conditions such as high peripheral speed, high pressure, and high temperature that could not be achieved with conventional dry seals.
Hydro-Static Non-Contact type Mechanical seal "Hydro-Static Seal" Product Overview (2:43)
Product features
Non-Contamination
1. Improved product purity
Non-contact, so no contamination
Improved purity and quality, reduced management items
Improved purity and quality, reduced management items
Longer life
2.Reduced replacement costs
Non-contact for longer life
Reduce replacement costs and improve equipment operating rates
Reduce replacement costs and improve equipment operating rates
Energy saving
3. Energy saving
No friction, no contact, so no power consumption
Contributing to energy conservation in factories
Contributing to energy conservation in factories
Trouble prevention
4. Ensuring safety
Preventing trouble with pressure management and flow rate monitoring
Do you have any problems?
For demanding applications
The HS seal has a single structure and can seal liquids and powders. It contributes to safety and security.
How the product works
1) | Seal gas is supplied to the porous carbon sliding part to generate a pushing force. |
2) | The fluid load generated by the spring and internal pressure presses the sliding surfaces, and a gap of several μm is maintained between the sliding surfaces due to the balance of force with the seal gas. |
3) | A pressure in the gap higher than the pressure inside the machine is ensured. |
4) | The contents inside the aircraft (gases, liquids, powders) are completely sealed. |
Product Specifications
Line Up
Model | HS- |
Series | Shaft diameter φ30～φ200mm |
variation | Basic type, cartridge type, seal unit type |
*HS: Hydro Static
basic
cartridge
Seal Unit
Spec.
Material Combination | Porous Carbon×Silicon Carbide, Tungsten Carbide, etc. |
Nominal diameter (shaft diameter) | φ30 to φ200 mm |
Seal Gas Pressure | 0.3 to 1.2MPa (design pressure 1.2MPa) |
Cabin pressure | FV～1.0MPa (design pressure 1.0MPa) |
Required differential pressure | 0.2MPa～ |
Permitted Rotational Speed | 0 to 20 m/s (rotary structure) |
Permitted temperature | 200 ℃ |
Seal Gas Fluid■ | Gas (air, nitrogen, etc.) |
Seal target | Gas, liquid, powder |
Direction of rotation | No question |
Mounting Direction | Any (side, top, bottom) |
Tolerance | Same as the tolerance of a typical mechanical seal |
Set jig | Step bolts are standard equipment |
*JIS B 8392-1 quality grade 1.2.2 recommended
Seal gas consumption
| Shaft diameter | φ80mm |
| Seal Gas Pressure | 0.4MPa |
| Cabin pressure | 0.2MPa |
| Seal gas consumption | 1.1NL/min |
| Atmospheric flow rate | 0.7NL/min |
| Inside flow rate | 0.4NL/min |
| Sliding surface clearance | 3μm |
Introduction example
No. | machine Name | Contents | Seal Gas | Temperature ℃ | Box pressure MPaG | Shaft diameter mm | Number of rotations min-1 | Peripheral speed m / s |
1 | Agitator | Unknown | N2 | 25 to 140 | The author ～10kPa | 80 | 211 | 0.88 |
2 | Agitator | Organic Liquid | N2or Dry Air | Max.100 | FV ～3kPaG | 120 | 50 | 0.31 |
3 | Pumps | Organic acid aqueous solution | Dry Air | 0 to 30 | 0.02 | 75 | 1190 | 4.67 |
4 | Pumps | Organic acid aqueous solution | Dry Air | -5 ~ 40 | 0.02 | 80 | 1190 | 4.98 |
5 | Agitator | Polymer Toluene | N2or Clean Air | Des.60 Open at room temperature | Des.0.19 Ope.0.02 | 45 | 88 | 0.21 |
6 | Pumps | AA | Dry Air | 88 | 0.127 | 38 | 1760 | 3.50 |
7 | Agitator | Silica/Methanol 29% ammonia water Ultrapure water | N2 | Des.200 | Des.0.3 | 101.6 | 120 | 0.64 |
8 | Agitator | AHF/organic solvent (Acetone/EMC) | N2or Clean Air | Des.160 | Des.FV ~0.19 | 45 | 80 | 0.19 |
9 | Pumps | Organic Liquid (C-HX) | N2 | 25 to 65 | 0.125 | 35 | 3540 | 6.49 |
10 | Agitator | Organic Solvent Gas (Xylene Dichlorobenzene) | N2 | Des.230 Ope.210 | Des.FV Ope.0.4kPa | 40 | 60 | 0.13 |
