Component Seals

Pusher Seals

Pusher Seals is an industry accepted term for mechanical seals which use a sliding secondary dynamic seal for its primary seal ring. These are the most traditional mechanical seals and indeed, their continued successful use is the ultimate measure for their value.

Pusher Seals

Type 100 Pusher Seals

  • Internal unbalanced seal
  • Multi-coil spring design for even load distribution
  • High torque capability for a rugged and yet compact seal ring
  • Field-Interchangeable secondary seals
  • Compact profile in a unitized seal in Imperial or Metric sizes
  • Large tolerance to axial and angular motions

Technical summery table*

Temperature Range
-40°C to 300°C
Pressure Range
Vacuum to 20 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

Type 100B – Imperial sizes Balanced Pusher Seals

  • Internal balanced seal
  • Multi-coil spring design for even load distribution
  • High torque capability for a rugged and yet compact seal ring
  • Interchangeable secondary seals
  • Compact profile in a unitized seal in Metric sizes to 4”
  • Large tolerance to axial and angular motions
  • Type 100B is often furnished in a cartridge form

Temperature Range
-40°C to 300°C
Pressure Range
Vacuum to 40 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

Type 100B – Metric sizes Balanced Pusher Seals

  • Internal balanced seal
  • Multi-coil spring design for even load distribution
  • High torque capability for a rugged and yet compact seal ring
  • Interchangeable secondary seals
  • Compact profile in a unitized seal in Metric sizes to DIN 24960
  • Large tolerance to axial and angular motions
  • Type 100B is often furnished in a cartridge form

Temperature Range
-40°C to 300°C
Pressure Range
Vacuum to 40 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

Type 100D – Dual Pusher Seals

  • Internal unbalanced Dual (“Double”) seal
  • Multi-coil spring design for even load distribution
  • High torque capability for a rugged and yet compact seal ring
  • Interchangeable secondary seals
  • Compact profile in a unitized seal
  • Designed for specific geometric envelopes in Imperial and Metric sizes
  • Large tolerance to axial and angular motions

Temperature Range
-40°C to 300°C
Pressure Range
Vacuum to 10 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

Type 100DB – Dual Balanced Pusher Seals

  • Internal balanced Dual (“Double”) seal
  • Multi-coil spring design for even load distribution
  • High torque capability for a rugged and yet compact seal ring
  • Interchangeable secondary seals
  • Compact profile in a unitized seal
  • Designed for specific geometric envelopes in Imperial and Metric sizes
  • Large tolerance to axial and angular motions

Temperature Range
-40°C to 300°C
Pressure Range
Vacuum to 20 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

Type 110B – Imperial Sizes Balanced Pusher Seals

  • Internal balanced seal
  • Wave spring design for clogging resistance
  • High torque capability for a rugged and yet compact seal ring
  • Interchangeable secondary seals
  • Compact profile in a unitized seal in Imperial sizes to 4”
  • Large tolerance to axial and angular motions
  • Type 110B is often furnished in a cartridge form

Temperature Range
-40°C to 300°C
Pressure Range Vacuum
to 40 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

Type 110B – Metric sizes Balanced Pusher Seals

  • Internal balanced seal
  • Wave spring design for clogging resistance
  • High torque capability for a rugged and yet compact seal ring
  • Interchangeable secondary seals
  • Compact profile in a unitized seal in Metric sizes to 100mm
  • Large tolerance to axial and angular motions
  • Type 110B is often furnished in a cartridge form

Temperature Range
-40°C to 300°C
Pressure Range Vacuum
to 40 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

Type 150 – External Pusher Seals

  • Externally balanced seal
  • Shielded metal parts
  • Preset operating length with setting tabs in Imperial and Metric sizes
  • Effective taper lock design eliminates shaft damage
  • Multi-coil spring design for even load distribution
  • Interchangeable secondary seals
  • Large tolerance to axial and angular motions

Temperature Range
-40°C to 300°C
Pressure Range
Vacuum to 10 bar
Speed Range
0 to 10 m/sec

* Depending on Materials, Size and Operating Conditions

Type 160 Pusher Seals

  • Internal balanced seal
  • Double balanced – will allow light duty reverse pressure
  • Dynamic secondary seal will not fret or erode shaft
  • Springs are not exposed to sealed media – will not clog up
  • Multi-coil spring design for even load distribution
  • May be used as an external seal for light duty.

Temperature Range
-50°C to 300°C
Pressure Range
Vacuum to 40 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

Type 180 – FDA Pusher Seals

  • The ultimate FDA seal – no springs or screws on process side
  • Internal balanced seal
  • Double balanced – will allow light duty reverse pressure
  • Dynamic secondary seal will not fret or erode shaft
  • Springs are not exposed to sealed media – will not clog up
  • Multi-coil spring design for even load distribution.

Temperature Range
-50°C to 300°C
Pressure Range Vacuum
to 40 bar
Speed Range
0 to 20 m/sec

* Depending on Materials, Size and Operating Conditions

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