ISO 9001 : 2015 Certified Company

Product Code : PS35 Category

Multi Spring Unbalanced Seal

Characteristics :

Standard design, Single seal, Unbalanced, Inside mounted, Independent of direction of rotation.

Operating :

Shaft Diameter 25mm to 100mm
Pressure 10 bar (max.)
Temperature -60°C to 200°C
Speed 2900 rpm (max.)


Ashish Seals is a highly esteemed manufacturer, exporters, and suppliers of Multi Spring Unbalanced Seal. Based in Mumbai India, and an ISO 9001-2015 Certified Company, this seal has a compact design that allows its usages in all kinds of Centrifugal pumps. The Mechanical seals are widely used to handle high temperature applications, highly corrosive chemicals, petroleum refinery, and Hydrocarbons in Petrochemical industry, Pulp & Paper industry for rotating equipment, agitators, mixers, pumps, compressors, and agitators. Besides, it is used preferred in various industries such as oil solvents, general chemicals, refrigerants, general chemicals, etc.

Working Principle

Multi Spring Unbalanced Seal is pusher type and is used to avoid distortion at a very high speed. This ensures uniform pressure on the sea face under all possible operating situations. This prevents all types of leakage. The unbalanced sea is easy to dismantle and assemble through circlip that is provided. It can be changed to balance version simply by changing the secondary seal and seal ring. The compact design allows its usage in different types of Centrifugal Pumps. Here, all components are held together by a Snap Ring. This makes is easy to install and remove.

Data Flow Chart

PS35E – Seal designed with elastomer
PS35W – Seal designed with wedge
# Description
1 Mating Ring
2,4 O-ring
3 Seal Ring
5 Packing
6 Wedge
7 Drive Collar
8 Grub screw
9 Spring
10 Thrust ring
11 Snap ring
12 Pin

Material of Construction

  • Faces : Carbon, Silicon carbide, Tungsten carbide, Lecrolloy, Ceramic
  • Elastomers : PS35E – FKM, FFKM, EPDM, NBR, Aflas PS35W – PTFE, GFT
  • Metallurgy : SS316, SS316L, SS304, Hastelloy-C, Monel, Alloy-20


Petrochemical, Refinery, Chemical.