Features and Benefits
- Extended service life in heavy-duty services assured by rugged single pusher seal with thick cross section components
- Increased reliability via large, low spring rate single coil spring that tolerates axial setting dimensions while reducing opportunity for clogging and hang-up from solids
- Consistent seal face contact provided by robust U-cup seal and spring holder
- Low-emissions performance enabled by silicon carbide rotating face mounted on graphite ring in UC and UCQ seals, preventing shrink fit distortions and sustaining a flat seal face
- High pressure performance in UO, UOP, D, and DP seals enabled by silicon carbide rotating face mounted on O-ring, preventing shrink fit distortions and sustaining a flat seal face
- Cost-effective operation ensured by integrated pumping ring in D and DP seals that establishes an exclusive Plan 23 cooling chamber around the seal faces and eliminates the expense of cool injection systems
Specifications
API 682
Pressure:
- UC: up to 27.6 bar (400 psi)
- UO and D: up to 68.9 bar (1000 psi)
- UOP and DP: up to 103.4 bar (1500 psi)
Temperature:
- U Series: -40 to 204°C (-40 to 400°F)
- D Series: -73 to 343°C (-100 to 650°F)
Speed: up to: 23 m/s (75 fps)
Sizes: 14.1 to 148 mm (0.566 to 5.838 inch)
Industries
• Power
• Nuclear
• Conventional Steam
• Biomass & MSW
• Oil & Gas
• Midstream Transportation
• Downstream Processing
Configurations
Arrangement 1 single seal (Common Piping Plans 11, 13, 32, 62)
UC
UCQ
UO
UOP
Arrangement 1 single seal (Common Piping Plan 23)
D
DP
Arrangement 2 unpressurized dual seal with dry running backup (Common Piping Plans 72, 75, 76)
UCQ/GSL
UOP/GSL
