ISO 9001 : 2015 Certified Company

Product Code : PS33 Category

Helical Spring Balanced Seal

Characteristics :

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

Operating :

Shaft Diameter 25mm to 100mm
Pressure 35 bar (max.)
Temperature -60°C to 200°C


Ashish Seals is a well known as a reliable Helical Spring Balanced Seal Manufacturers, Exporters, and Suppliers in India and overseas. Our Mechanical seals are manufactured with the help of superior crude material that assures fantastic toughness. Being an ISO 9001-2015 certified manufacturer in India for the seals, we provide superior quality Helical Spring Balanced Seal that is obtained by changing the carbon face assembled via circle provided. It finds wide application in nuclear plants, High pressure pumps, fertilizers, nuclear plants, high pressure pumps, etc.

Working Principle

Helical Spring Balanced Seal is a ‘O’ Ring & PTFE wedge type Secondary Seals. It is widely in demand for its best quality, durability, and high efficiency. These are designed to meet the slurry media sealing, dirty media, light contamination, clogging type application. Such seals get fitted to the normal shaft without any balancing step. At this point, the mechanical drive of these seal is realised by grub screw that is locked on the shaft. Helical Spring Balanced Seal manufactured and supplied by us has the compact shape, limited axial length that allows easy mounting process.


– The high to moderate spring load offers positive sealing over a wide pressure & temperature range.
– The tight spacing and high unit load makes it suitable for cryogenic & vacuum applications.

Data Flow Chart

PS33E – Seal designed with elastomer
PS33W – 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, Ceramic, Silicon carbide, Tungsten carbide, Lecrolloy
  • Elastomers : PS33E – FKM, FFKM, EPDM, Silicon, NBR, TTV PS33W – PTFE, GFT
  • Metallurgy : SS316, SS316L, SS304


Chemical, Petroleum, Petrochemical.