Pusher Mechanical Seal

Pusher Mechanical Seal

A pusher-type seal consists of a primary sealing ring assembled with an ‘O’ ring and springs (can be one or multiple). The purpose of this is to force the sealing liquid across the face and keep it from leaking to the atmospheric side of the seal.

The dynamic ‘O’ ring is designed to move axially (be pushed) along the shaft or sleeve. The surface underneath the dynamic ‘O’ ring must therefore be very smooth to allow for axial movement. If solids are abundant in the sealing fluid, they can build up on the ‘O’ ring and prevent this axial movement (hang up).

Conical Coil Spring

Conical Coil Spring Mechanical Seal looking from Sliding Face of the Rotating Seal Ring is designed as Right Hand Shaft Rotation which needs Right Hand Spring and Vice Versa. These Seals are Cost Effective Seals for Basic Application Equipment such as Centrifugal Pump and other Equipment with Rotating Shaft, Handling Water, Oils, Fuels, Mild Chemicals and Liquids Containing of Low Quantity of Abrasive. We are the manufacturer of Conical Coil Spring Mechanical Seal, Pusher Mechanical Seals in Mumbai INDIA.

conical coil pusher seal

Conical Mechanical Seals
(RT-42U)

  • Conical Single Coil Spring Mechanical Seal.
  • Inside mounted.
  • Unbalanced Pusher Mechanical Seals.
  • Spring design depended on Shaft Rotation with Central Tapered Spring.

Single Spring Balance Mechanical Seals

The Seal with Single Spring design and is depended on the Shaft Rotation. Looking from Sliding Face of the Rotating Seal Ring is designed as right hand Spring for Shaft Rotation and vice-versa. Seal is designed as Torque Transmission from Drive Collar to Spring and Seal Ring. These Seals is cost effective for Basic Application Equipment such as Centrifugal Pump and other Equipment with Rotating Shaft, Handling Crystallizing Slurry, Suspended Solid Slurry, Saturated Chemical Slurry and General Chemical Slurry.

Single Spring Mechanical Seals
(RT-O21/W21)

  • Single Acting Balance Pusher type Mechanical Seal.
  • Inside Mounted Mechanical Seal.
  • Spring Design depended on shaft rotation.
  • Type RT-W21 seal having Universal Chemical Compatibility due to design of PTFE Elastomer

Single Spring Unbalance Mechanical Seals

This Seal Single Spring Mechanical Seal are designed and manufactured to meet all the requirements and most suitable for this applications. These seal are Internally Mounted Unbalanced design which Seal having 'O' Ring as a Secondary Sealing member and other Seal having PTFE Wedge as a Secondary Sealing member. Secondary Sealing member can be changed as per Chemical Compatibility. The Helical Coil Spring designed Seal help to Seal the Dirty and Clogging type of application. Construction of these Seals designs hold whole Rotary Parts together with the help of Snap Rings which is make easiest for Installation and Removal.

single spring unbalance pusher seal

Single Spring Mechanical Seals
(RT-O31/V31)

  • Single Acting Unbalance Pusher type Mechanical Seal.
  • Dual Directional Mechanical Seal.
  • Inside Mounted Mechanical Seal.
  • Independent Direction of Rotation.

Multiple Spring Balance Pusher Seals

This Seal is recommended for clean media application. We are among top manufactures of Multi Spring Mechanical Seal. PTFE Wedge Construction of the Secondary Sealing Member provides Universal Service application. Construction of these Seal designs hold whole Rotary Parts together with the help of Snap Ring which is installation and removal is make easiest. These Type of Seal designed and used for Petroleum Products, Low Aggressive Chemicals and Refrigerants in Centrifugal Pumps and other Equipment with Rotating Shafts.

multiple spring balance pusher seal

Multi Spring Balance Mechanical Seals
(RT-O48/W48)

  • Balance Pusher Seals.
  • Single and Dual Configuration.
  • Hydraulically Balanced Seal.
  • 'O' Ring Seal design helps to eliminate scoring on Shaft and Sleeve.
  • Wedge design use in Extreme Temperature, Chemical application.
  • Independent on direction of rotation.

Multiple Spring Unbalance Mechanical Seals

Seal is recommended for clean media application. PTFE Wedge Construction of the Secondary Sealing Member provides Universal service application. Construction of these Seal designs holds whole Rotary Parts together with the help of Snap Rings which is make easiest of Installation and Removal. These Type of Seal designed and used for Petroleum Products, Low Aggressive Chemicals and Refrigerants in Centrifugal pumps and other Equipment with Rotating Shafts. Multi Spring Unbalanced Mechanical Seal are carefully designed

multiple spring unbalance pusher seal

Multiple Spring Mechanical Seals
(RT-O47/W47)

  • Unbalance Pusher Seals.
  • Single and Dual Configuration.
  • Closed Type Seal
  • 'O' Ring Seal design helps to eliminate scoring on Shaft and Sleeve.
  • Wedge design use in Extreme Temperature, Chemical application.
  • Independent on direction of rotation.
Parameter :
Shaft Dia   : 10mm to 100mm
Pressure   : Up to 25 bar
Temperature   : -20°C to 200°C
Speed   : 3000 RPM

Seal Ring Faces : Carbon, GFT, SiC & TC

Seat Faces : Carbon, Ceramic, SiC & TC

Elastomer : Viton, PTFE, GFT, EPDM, NBR and FFKM

MOC : SS 316, Hast-C and Alloy - 20

Reverse Balance Multiple Springs

It is Externally Mounted Reverse Balance design Seal which having 'O' Ring as a Secondary Sealing member. Secondary Sealing member can be changed as per Chemical Compatibility. All Metal Components including spring are Isolated from Aggressive media Sealing. Simplicity in Checkout Function and Cleaning Possibility as this Mechanical Seal located easily access outside the pump. The Single Design Seal can be installing as Dual Back to Back Arrangement and can operate on Low Barrier Fluid Pressure due to its Reverse Balance Design feature. We are the top manufacturer of Reverse Balance Multi Spring Seal.

reverse balance multiple spring seals

Reverse Balance Mechanical Seals
(RT-50B)

  • Single Acting Mechanical Seal.
  • Dual Directional Mechanical Seal.
  • Outside Mounted Mechanical Seal.
  • Reverse Balanced Design.
  • Multi Spring design Mechanical Seal.

Wave Spring Pusher Seals

This is single wave spring seals for most general application, being used in industries like Paper and Pulp, Sugars, Sewage, Polymer, Rubber etc. Its compact design with reduced axial length is the major advantage of using single wave spring seals. These seal are designed to handle dirty and slurry application as spring clogging does not occur.

wave spring pusher seal

Wave Spring Mechanical Seals
(RT-44U)

  • Single seal
  • Independent on direction of rotation
  • Unbalanced
  • Wave spring loaded seal
Parameter :
Seal size   : 10 mm to 100mm
Pressure   : up to 10 Bar
Temperature   : -20°C…. to 200°C
Speed   : 3000 RPM

Seal Ring Faces : Carbon, GFT, SiC & TC

Seat Faces : Carbon, Ceramic, SiC & TC

Elastomer : Viton, PTFE, GFT, EPDM, NBR and FFKM

MOC : SS 316, Hast-C and Alloy-20

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