Type 28XP Dry Gas Seals | John Crane Mechanical Seals
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Type 28XP

ターボコンプレッサー用 非接触ガスシール

Type 28XP: Possibly the most popular seal in the range today, the Type 28XP builds on the 28AT design and seals medium to high pressures with improved chemical resistance. It can also operate over a wider temperature range and is increasingly the preferred product for large sizes, and for applications requiring slow roll and coast-down conditions. 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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Recherche de documents


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


Limites de température

-220 °f à 600 °f/-140 °c à 315 °c, en fonction des conditions d’utilisation générales

Limites de pression

6 500 psi(g)/450 bar(g) sur un seul étage

Limites de vitesse

660 pi/s/200 m/s

Limites de taille

13,75 po/350 mm

Applications recommandées

  • Compresseurs centrifuges
  • Autres compresseurs
Fonctionne avec
Filtre gaz FCF
Filtre gaz FCF
PD 76 PD 76
Produits similaires
Type 28AT Type 28AT
Type 28EXP Type 28EXP
Type 28VL Type 28VL

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