Type 28EXP

Non-contacting Gas Seal for Turbo Compressors

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.

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Features
Parameters
Recommended Applications
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Works With

Features

California Residents: PROPOSITION 65 WARNING
Cartridge design
Unidirectional or bidirectional capability
Single, double-opposed or tandem configuration
Robust design with unparalleled field-proven pedigree

Parameters

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

*If parameters fall outside of these ranges, contact us to speak to the engineering department.