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Standard Mechanical Seals

Product Description

  • Crest to Crest Wave spring or multiple
    springs rotating
  • For plain shafts
  • Independent of direction of rotation
  • Single seal
  • Unbalanced
  • Variant with FEP &Spring energised PTFE


Item Description 
1.1 Seal face
1.2 Drive collar
1.3 Thrust ring
1.4 O-Ring
1.5 Spring
1.6 Set screw
2 Seat (G9)
3 O-Ring

Technical Features

  • Flexibility in torque transmissions
  • Pumping screw for media with higher
    viscosity also possible
  • Self cleaning effect
  • Short installation length also possible
  • Suitable for media with low solids contents
  • Versatile application possibilities

Typical Industrial Applications

  • Chemical industry
  • Food and beverage industry
  • Medias with low solid contents
  • Marine applications
  • Process industry
  • Water and waste water technology
  • Chemical standard pumps
  • Gear wheel feed pumps
  • Multistage pumps
  • Vertical screw pumps


EN 12756


Seal face: Special cast CrMo steel (S),
Silicon carbide (Q1, Q2), Aluminium oxide (V)
Seat G9: Carbon graphite antimony
impregnated (A), Carbon graphite resin
impregnated (B), Silicon carbide (Q1*, Q2*)
Seat G6: Silicon carbide (Q1*, Q2*)
Seat G13: Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B)
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

Performance Capabilities

Sizes: d1 =Upto 100 mm (Upto 4.000’’)
Pressure: p1 = 25 bar (363 PSI)
Temperature: t = -50 °C ... +220 °C (-58 °F ... +428 °F)
Speed = 20 m/s (66 ft/s)
Permissible axial movement:
d1 = up to 25 mm: ± 1.0 mm
d1 = 28 up to 63 mm: ± 1.5 mm
d1 = from 65 mm: ± 2.0 mm


Standard Cartridge Seals

Mechanical Seals As Per API 682

Split Seals

Engineered Seals For Demanding Applications

Standard Mechanical Seals For Pumps & Compressors

Mechanical Seals For Agitators, Mixers, Kneaders & Reactors

Supply Systems & Components

API 682 / ISO 21049

Technical Information