Structure Features :
Double-end face, unbalanced type, multi springs, O-ring seal, cartridge mechanical seal, easy and reliable installation.
HQM451K-D double-end seal
HQM451KL-D double-end face with bearing and skeleton oil seal
Operating Range:
Mediums:Oil, water, weak acid, weak alkali and flammable, explosive, toxic gas, etc.
Pressure: -0.1-1.6Mpa
Temperature: ≤-10-200 (350) ℃
Linear speed: ≤2m/s
| Shaft Dia. | d0 | d1 | d2 | d3 | d4 | n | d4 | L1 | L2 | L3 | L4 | A/B |
| 40 | 90 | 175 | 145 | 40 | 110 | 4 | 18 | 110.5 | 159.5 | 15 | 28 | G3/8 |
| 50 | 135 | 240 | 210 | 50 | 176 | 8 | 18 | 114.5 | 174.5 | 17 | 28 | G3/8 |
| 60 | 135 | 240 | 210 | 60 | 176 | 8 | 18 | 119 | 181.5 | 17 | 28 | G3/8 |
| 80 | 155 | 275 | 240 | 80 | 204 | 8 | 22 | 133 | 217.5 | 20 | 34 | G1/2 |
| 100 | 190 | 305 | 270 | 100 | 234 | 8 | 22 | 137.5 | 218.5 | 20 | 34 | G1/2 |
| 125 | 215 | 330 | 295 | 125 | 260 | 12 | 22 | 138.5 | 233.5 | 20 | 40 | G1/2 |
| 140 | 250 | 395 | 350 | 140 | 313 | 12 | 22 | 152.5 | 250.5 | 20 | 40 | G1/2 |
| 160 | 265 | 395 | 350 | 160 | 313 | 12 | 22 | 141 | 253 | 25 | 40 | G1/2 |
| 180 | 310 | 445 | 400 | 180 | 364 | 12 | 22 | 166 | 263.5 | 25 | 45 | G1/2 |
| 200 | 310 | 445 | 400 | 200 | 364 | 12 | 22 | 171 | 271 | 25 | 45 | G1/2 |
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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