Standard Mechanical Seals For Pumps & Compressors

B740-D

Reach
RoHS

B740-D

Product Description

  • Dual seal configuration
  • Balanced design
  • Independent of direction of rotation
  • For stepped shafts
  • Rotary unit with multiple springs
  • Pumping device available for increased efficiency in circulation (B740F-D)
Details
Item No. Description
1.1 Seal face
1.2 Seal face
1.3 Thrust ring
1.4 Drive collar
1.5 Spring
1.6 Set screw
1.7 O-Ring
1.8 O-Ring
2 Seat (G9)
3 O-Ring
4 Seat (G9)
5 O-Ring

Download PDF
Technical Features
  • Versatile torque transmission available
  • Capable of self cleaning
  • Multifaceted application usage
  • Pumping device to increase efficiency in circulation for media with higher viscosity available
  • Short installation length available on request
  • Suitable for media with low solids content
  • EN 12756 (For connection dimensions d1 up to 100 mm)
  • Adhesives
  • Chemical industry
  • Media with poor lubrication properties
  • Medias with low solids content and abrasive particles
  • Process industry
  • Toxic and hazardous media
  • Chemical standard pumps
  • EN 12756
  • Seal face: Silicon carbide (Q1, Q2), Carbon graphite antimony impregnated (A), Aluminium oxide (V), Special cast CrMo steel (S)
  • Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*)
  • Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
  • Springs: CrNiMo steel (G)
  • Metal parts: CrNiMo steel (G), Duplex (G1)
    * Cannot be combined with seal face made of S
  • Sizes: d1 = Upto 200 mm (Upto 7.875’’)
  • Pressure:
    p1 = 80 bar (1160 PSI) for d1 = 14 ... 100 mm,
    p1 = 25 bar (363 PSI) for d1 = 100 ... 200 mm,
    p1 = 16 bar (232 PSI) for d1 > 200 mm
  • Temperature: t = -50 °C...+220 °C
    (- 58 °F...+428 °F)
  • Speed = 20 m/s (66 ft /s)
  • Permissible axial movement:
    d1 up to 100 mm: ± 0.5 mm
    d1 from 100 mm: ± 2.0 mm

Other Products