Engineered seals

HR HR
  • Single seal
  • Balanced
  • Independent of direction of rotation
  • Multiple springs stationary
  • Seat rotating
  • Seat arranged directly behind the impeller
  • Spring protection sleeve
  • Variant with cylindrical spring and acc. EN 12756 (HRZ1) available
  • Variant as cartridge with/without guide sleeve for application with/without quench (HR2, HR3)
  • Dual seal as cartridge unit (HRKS-D) available
HRC...N HRC...N
  • Cartridge
  • Balanced
  • Independent of direction of rotation
  • Stationary multiple springs
  • Spring protection sleeve
  • Variant for operation with pressureless quench available (HRC2000N)
  • Dual seal with and without pumping screw (HRC3300NF, HRC3300N) available
LP-D LP-D
  • Integrated seal for Sulzer A pumps
  • Dual seal, balanced
  • Semi cartridge unit
  • Independent of direction of rotation
  • Double pressure balanced
  • Internal barrier fluid circulation
  • Static springs on both sides
  • No dynamic O-Ring on shaft
  • Rugged design
  • Shrink-fitted seal faces
  • Seal faces have a large clearance to the shaft
  • Wear part cost minimized
  • Optimized design for Non-Flow use
LP-S LP-S
  • Integrated seal for Sulzer A pumps
  • Single + Plan 11 flush
  • Semi cartridge unit
  • Balanced
  • Independent of direction of rotation
  • Static springs
  • No dynamic O-Ring on shaft
  • Rugged design
  • Shrink-fitted seal faces
  • Seal faces have a large clearance to the shaft
  • Wear part cost minimized
SH(V) SH(V)
  • Cartridge design
  • Single seal
  • Balanced
  • Multiple springs
  • Stationary spring loaded unit
  • Shrink-fitted seal face
SHF / SHP SHF / SHP
  • Cartridge design
  • Single seal
  • Balanced
  • Multiple springs
  • Dependent of direction of rotation
  • Integrated pumping device
  • Stationary spring loaded unit
  • Shrink-fitted seal face
SHPV / SHFV SHPV / SHFV
  • Cartridge design
  • Single seal
  • Balanced
  • Dependent of direction of rotation
  • Integrated pumping device
  • Stationary spring loaded unit
  • Multiple springs
  • Shrink-fitted seal face
SAF(V) / SAP(V) SAF(V) / SAP(V)
  • Cartridge design
  • Single seal
  • Balanced
  • Dependent on direction of rotation
  • Integrated pumping device
  • Stationary spring loaded unit
  • Inserted seal face
  • Rotating carbon seat
SHF(V)-D / SHP(V)-D SHF(V)-D / SHP(V)-D
  • Cartridge design
  • Dual seal
  • Balanced
  • Integrated pumping device
  • Stationary spring loaded unit
  • Multiple springs arrangement
  • Shrink-fitted seal face
  • One rugged seat
DF-SA DiamondFace DF-SA DiamondFace
  • Cartridge design
  • Single seal
  • Balanced
  • Integrated pumping device
  • Stationary spring loaded unit
  • Inserted seal ring
  • Rotating mating ring
    (DiamondFace coated)
DF-(P)DGS6 
DiamondFace DF-(P)DGS6
DiamondFace
  • DiamondFace bonded primary seal faces
  • Safe cupped retainer for rotating ring
  • Fully operational in both liquid and gas phases
  • Bi-directional
  • Ready-to-fit cartridge unit
  • Single, double, tandem and tandem seal with intermediate labyrinth arrangement available
SHI300 SHI300
  • Robust seal design - suitable for demanding light hydrocarbon applications
  • Compact cartridge seal for small seal chambers
  • Single unpressurized seal with a high pressure-non contacting containment seal
  • Stationary spring loaded unit
  • Balanced primary seal faces in materials with high thermal conductivity and strength
  • Multi-point injection of the flush fluid optional
  • Seal faces can be equipped with lubrication enhancing grooves and/or DiamondFace technology
SHI366 SHI366
  • Robust seal design – especially for demanding crude oil applications
  • Compact cartridge seal for small seal chambers
  • Single unpressurized seal with containment high-pressure throttle design
  • Stationary spring loaded unit
  • Balanced seal faces in materials with high thermal conductivity and strength
  • Inserted seal face
  • Multi-point injection of the flush fluid optional
  • Seal faces can be equipped with lubrication enhancing hydropads and/or DiamondFace technology
Solutions for dredger pumps
Solutions for dredger pumps

Our HR mechanical seals are the innovative and economic solution for media containing solids. Find out more!

DiamondFace
DiamondFace

Our innovative DiamondFace technology is applicable in numerous industries. Find out more...

Mechanical seals underwater
Mechanical seals underwater

Submerged! The new & innovative energy production technology of marine current power stations relies on our robust & reliable sealing technology. Find out more...

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