DGS (Dry Gas Seals) are the perks of the mechanical seal industry. Dry gas seals are non-contacting, dry-running mechanical face seals that consist of a mating (rotating) ring and a primary (stationary) ring. When operating, lifting geometry in the rotating ring generates a fluid-dynamic lifting force causing the stationary ring to separate and create a gap between the two rings. YALAN Seals Team has been spending great resources in developing and producing DGS (dry gas seals) in the last 3 years, and sccessfully developed and delivered full series of dry gas seals for compressors, pumps and mixers to our overseas clients. YALAN Seals now has a full sets of equipment for producing DGS, from face rings with dynamic pressure grooves to all metal parts and secondary barrier seals, and also built up a testing lab that could handle static and dynamic tests of 6 sets of DGS simultaneously.
DGS for Compressors
![Slideshow](/images/products/DGS/28AT-T93FR.jpg)
Type 28AT Dry Gas Seal with T93FR Barrier Seal (equivalent to John Crane Type 28AT DGS)
![Slideshow Panel](/images/products/DGS/28XP.jpg)
Type 28XP Dry Gas Seal (equivalent to John Crane Type 28XP DGS)
![Slideset](/images/products/DGS/Gaspac-L-21.jpg)
GasPac Dry Gas Seal (equivalent to Flowserve GasPac Series DGS)
![Slideset](/images/products/DGS/carbon-ring-seal.jpg)
Split Carbon Ring Barrier Seal for Compressors
![Slideset](/images/products/DGS/compressor-dgs-1.jpg)
Customized DGS for Compressors of Shengu Group (Shenyang Blowers)
![Slideset](/images/products/DGS/compressor-dgs-2.jpg)
Customized DGS for Compressors of Shengu Group (Shenyang Blowers)
![Slideset](/images/products/DGS/WKA1200-1.jpg)
WKA1200 Carbon Ring Barrier Seals for Replacing EagleBurgmann WKA1200 Series
![Slideset](/images/products/DGS/WKA1200-2.jpg)
WKA1200 Carbon Ring Barrier Seals for Replacing EagleBurgmann WKA1200 Series
DGS for Pumps
![Slideset](/images/products/DGS/GF200.jpg)
GF200 Dry Gas Seal (equivalent to Flowserve GF200 Series DGS)
![Slideshow Panel](/images/products/DGS/dgs-for-pumps.jpg)
Customized Dry Gas Seal for Pumps
![Slideset](/images/products/DGS/dgs-for-pumps-2.jpg)
Customized Dry Gas Seal for Pumps
![Slideset](/images/products/DGS/cryogenic.jpg)
HSPBGS1 Drg Gas Seal for Cryogenic Pumps
![Slideset](/images/products/DGS/cryogenic-2.jpg)
MFLC Drg Gas Seal for Cryogenic Pumps
DGS for Mixers
![Slideset](/images/products/DGS/dgs-for-mixers.jpg)
Dry Gas Seal for Mixers
![Slideshow Panel](/images/products/DGS/dgs-for-mixers-2.jpg)
Dry Gas Seal for Mixers
DGS Face Rings
![Slideset](/images/products/DGS/face-ring-1.jpg)
Dry Gas Seal Face Ring (bi-direction)
![Slideshow Panel](/images/products/DGS/face-ring-2.jpg)
Dry Gas Seal Face Ring (counter-clockwise)
![Slideset](/images/products/DGS/face-ring-3.jpg)
Dry Gas Seal Face Ring (counter-clockwise)
![Slideshow Panel](/images/products/DGS/face-ring-4.jpg)
Dry Gas Seal Face Ring (clockwise)
Production, Inspection, Testing and Packing
CNC Production of Metal Parts
Running Test of DGS
Dynamic Balancing of YALAN DGS (Dry Gas Seal) on SCHENCK Dynamic Balancer
DGS Face Ring Dimension Inspection by Zeiss CMM
![Slideshow Panel](/images/products/DGS/1.jpg)
DGS Rotary Face Ring Production (laser grooving)
![Slideshow Panel](/images/products/DGS/2.jpg)
Dry Gas Seal Assembly
![Slideshow Panel](/images/products/DGS/3.jpg)
Dry Gas Seal Assembly
![Slideshow Panel](/images/products/DGS/4.jpg)
Dry Gas Seal Running Test
![Slideshow Panel](/images/products/DGS/7.jpg)
Zeiss CMM Inspection
![Slideshow Panel](/images/products/DGS/8.jpg)
DGS Dynamic Balancing
![Slideshow Panel](/images/products/DGS/5.jpg)
Dry Gas Seals Before Packing
![Slideshow Panel](/images/products/DGS/6.jpg)