Flowserve U/D Seal

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Balanced pusher seals with a substantial single coil spring that provides exceptional performance in refineries, pipelines, and petrochemical services. Fully compliant with API 682 Type A requirements.

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)