Structure Features :
Double end face, arbitrary rotation direction; cartridge seal.
HQHS-D series is a kettle seal designed for medium and high-pressure vessel applications.
HQHS(L)-D is a non-balanced design, with a nominal pressure of PN25, and the isolation fluid must be pressurized.
HQHS-D double seal, unbalanced type.
HQHSL-D double seal, unbalanced type, with bearing.
Operating Range:
Shaft diameter: =20~500mm
Pressure: = vacuum ~ 25 (40) bar
Temperature: =-20℃~+200(350)℃
Linear speed: =5m/s
| dw | d1 | nxd2 | d3 | AK | L1 | L2 | l3 | l4 |
| 40 | 200 | 6*18 | 80 | 170 | 115 | 170 | 35 | 45 |
| 50 | 230 | 8*18 | 100 | 200 | 120 | 180 | 35 | 55 |
| 60 | 255 | 8*18 | 120 | 225 | 140 | 210 | 35 | 60 |
| 80 | 295 | 8*23 | 145 | 260 | 145 | 230 | 44 | 60 |
| 100 | 315 | 8*23 | 170 | 280 | 160 | 245 | 44 | 65 |
| 120 | 345 | 8*23 | 190 | 310 | 160 | 250 | 50 | 65 |
| 140 | 380 | 12*23 | 215 | 345 | 165 | 265 | 50 | 65 |
| 160 | 440 | 12*27 | 240 | 395 | 185 | 300 | 50 | 75 |
| 180 | 475 | 12*27 | 260 | 430 | 185 | 310 | 55 | 75 |
| 200 | 465 | 12*27 | 290 | 420 | 190 | 290 | 55 | 75 |
A: We deliver customized sealing solutions to diverse industrial sectors,including:
·Oil and Gas
·Refining
·Chemical and Petrochemical
·Water and Wastewater Treatment
·Pharmaceutical
·Power Generation
·Marine
Our products are designed to perform reliably in demanding environments across multiple industries.
A: HQ Seals provides custom sealing solutions customized for your working conditions. We manufacture seals according to:
· Technical drawings
· Physical samples
· Special material & performance specifications
· Non-standard sizes
We maintain close communication with clients to guarantee all finished products satisfy operational and environmental requirements.
A: First, identify the optimal configuration (single or double seal) according to the process fluid. Then verify operating parameters — pressure, temperature and shaft speed — to select the appropriate seal type and materials. Lastly, confirm available installation dimensions, and opt for either a component or cartridge seal subject to customer requirements and relevant standards. Seal selection is normally carried out by qualified technicians.
A: For mechanical seals that have been stored for a long period: we can grind the rotating and stationary rings, replace secondary sealing O-rings, conduct air tightness testing and issue the pressure test report.
We can provide on-site installation guidance service. For failed mechanical seals, we are able to deliver failure analysis reports.
A: Yes, repairs are available. Depending on the damage condition of the mechanical seal, we classify the overhaul into Level 1, Level 2 and Level 3 repair.
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