Press release
Dry Gas Seals Gain Global Attention as Industries Seek Reliable Mechanical Seal Manufacturers
Image: https://www.abnewswire.com/upload/2025/09/90caf99867cc17750c4f21cf1f0cb13d.jpg
Dry Gas Seal - Working Principles
A dry gas seal is a non-contacting, gas-lubricated mechanical seal in which a rotating mating ring with spiral-groove geometry creates a hydrodynamic pressure film between the seal faces. At only 3-5 m film thickness, the process gas (nitrogen, CO or clean air) forms a barrier that prevents product leakage to atmosphere without the need for liquid buffer fluids. The result is zero emissions, near-zero friction and maintenance-free operation for compressors, pumps, expanders and blowers.
Structure & Key Components
- Rotating Mating Ring - laser-machined spiral grooves on a tungsten-carbide or silicon-carbide substrate.
- Stationary Seal Ring - lapped to optical flatness ( less than or equal to 0.6 helium light band).
- Secondary Seals - O-rings or metal bellows isolate the process side from the atmosphere.
- Springs/Biasing System - maintains face contact during start-up and shut-down.
- Barrier Gas Ports - introduce filtered, dry gas at 2-5 bar above process pressure.
- Monitoring Ports - pressure and temperature taps for remote condition monitoring.
Core Applications
- Centrifugal & screw compressors in LNG, petrochemical and refinery units.
- High-speed turbo-expanders for hydrogen and CO capture plants.
- API-compliant pumps handling supercritical fluids.
- Cryogenic and high-pressure (> 300 bar) pipelines.
- Renewable-energy hydrogen compressors and CO refrigeration systems.
How to Choose a Reliable Dry Gas Mechanical Seals Manufacturer - Lepu Seal's Advantages
Manufacturing Capacity & Scale
- 40,000 m state-of-the-art plant with Class 10,000 clean rooms for lapping and assembly.
- 300+ CNC grinders, plasma-spray coating lines and laser-groove machines deliver 5,000+ sets per month.
- In-house foundry for tungsten-carbide, silicon-carbide and carbon-graphite faces ensures material traceability and 30-day lead times.
Industry Experience
- 23 years focused exclusively on mechanical seals; first Chinese company to achieve API 682 Category 3 certification for dry gas seals.
- Reference installations in 68 countries, including ExxonMobil, Sinopec, ADNOC and Linde.
- Library of 1,800 proven groove patterns and 3-D CFD simulation models.
Customization Service
- Rapid prototyping - first article in 72 hours using additive-manufactured test rings.
- Tailored groove geometry, face material pairing and bellows design optimized for any gas, pressure, temperature (-196 degrees C to 450 degrees C).
- Full API 617 & API 682 validation test rigs; dynamic balancing to ISO 1940 G2.5.
- Remote monitoring kits (IoT pressure/temperature sensors) available as retrofit packages.
Quality & Certification
Lepu Seal's dry gas seals are manufactured under ISO 9001, ISO 14001 and ATEX 2014/34/EU standards. Every seal undergoes 100 % helium leak testing (< 1 times 10 Pam/s), hydrostatic pressure proof, and 48-hour dynamic spin test before shipment.
Image: https://www.abnewswire.com/upload/2025/09/e46503f037938980706df4eb05db8be8.jpg
For detailed specifications, CAD files or a free application review, contact:
Phone: +86-020-36158139
Email: mark@lepuseal.com
Media Contact
Company Name: Guangzhou Lepu Machinery Co., Ltd.
Contact Person: Mr. Mark Ao
Email:Send Email [https://www.abnewswire.com/email_contact_us.php?pr=dry-gas-seals-gain-global-attention-as-industries-seek-reliable-mechanical-seal-manufacturers]
Address:No. 5, Yunkai Road, Huangpu District
City: Guangzhou
Country: China
Website: https://www.lepuseal.com/
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