Features mechanical seal type 28exp
- California Residents: PROPOSITION 65 WARNING
- Cartridge design
- Unidirectional or bidirectional capability
- Single, double-opposed or tandem configuration
- Robust design with unparalleled field-proven pedigree
Recommended Applications type 28exp
- Centrifugal compressors
About Mechanical seal type 28exp
Type 28EXP: The product for the most challenging and hostile environments with proven and independently audited performance to 425 bar(g). Type 28 compressor dry-running gas seals have been the industry standard since early 1970 for gas-handling turbomachinery. Utilizing John Crane’s patented spiral groove pattern, these seals are non-contacting in operation. During dynamic operation, the mating ring/seat and primary ring/face maintain a sealing gap of approximately 0.0002″/5 microns, thereby eliminating wear. These seals eliminate seal oil contamination and reduce maintenance costs and downtime. Single, tandem and double seal arrangements are available.
Design Features mechanical seal type 28exp
- Shrouded mating ring prevents secondary damage in the event of a mating ring fracture
- Low-level leakage can be vented to a safe area, used as fuel to drive equipment, or returned to process via a low-pressure ejector
Operating range mechanical seal type 28exp
- Temperature Limits
-220°F to 600°F/-140°C to 315°C, dependent on overall duty conditions - Pressure Limits
6,500 psi(g)/450 bar(g) across single stage - Speed Limits
660fps/200m/s - Size Limits
13.75″/350mm
Product Description type 28exp
Type 28exp compressor dry-running gas seals have been the industry standard since the 1970s for gas-handling turbomachinery.
Utilizing John Crane’s patented spiral groove pattern, these seals are non-contacting in operation.
- During dynamic operation, the mating ring/seat and primary ring/face maintain a sealing gap of approximately 0.0002 in./5 microns, thereby eliminating wear
- These seals eliminate seal oil contamination and reduce maintenance costs and downtime
- Single, double opposed, and tandem cartridge seals are capable of handling a wide variety of gas sealing applications in the gas collection/transmission, refining, chemical and petrochemical processing industries
