Project Description

DUY SINGLE SEALS

  • DUY SINGLE SEALS
  • DUY SINGLE SEALS
  • DUY SINGLE SEALS
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Item No. Description
1 Seal face
2, 5, 7 O-Ring
3 Spring
4 Seat
6 Shaft sleeve
8 Drive collar
9 Set screw
10 Snap ring
11 Cover
12 Assembly fixture
13 HSH Cap Screw
14 Gasket
15 Lip seal (-QN), throttle ring (-TN)
  • Ideal for use in process pump standardization
  • O-ring is dynamically loaded to prevent shaft damage
  • Dimensional modification of the stuffing chamber is not required due to short radial installation height
  • Ideal to convert and retrofit pumps with packings and large volume OEM production
  • Cartridge unit factory assembled for easy installation, which reduces downtime
  • Rugged design for long operating life
  • Chemical industry
  • Food and beverage industry
  • Petrochemical industry
  • Pharmaceutical industry
  • Universally applicable
  • Water and waste water technology
  • Centrifugal pumps
  • Eccentric screw pumps
  • Process pumps
  • Seal face: Silicon carbide (Q1), Carbon graphite resin impregnated (B), Tungsten carbide (U2)
  • Seat: Silicon carbide (Q1)
  • Secondary seals: FKM (V), EPDM (E), FFKM (K), Perflourocarbon rubber/PTFE (U1)
  • Springs: Hastelloy® C-4 (M)
  • Metal parts: CrNiMo steel (G), CrNiMo cast steel (G)
  • DUY-SN, -SNO, -QN, -TN
    Sizes: d1 = Upto 100 mm (Upto 4.000″)
    Other sizes on request
    Temperature: t= – 40°C …+220°C
    (-40°F …+428°F)
    (Check O-ring resistance)
  • Sliding face material combination BQ1
    Pressure: p1 = 25 bar (363 PSI)
    Speed = 16 m/s (52 ft/s)
  • Sliding face material combination Q1Q1 or U2Q1
    Pressure: p1 = 12 bar (175 PSI)
    Speed = 10 m/s (33 ft/s)
    Permissible axial movement: ± 1.0 mm, d1 ≥ 75 mm ± 1.5 mm
  • Single seal configuration
  • Balanced design
  • Independent of direction of rotation
  • Cartridge construction