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Single Spring Unbalanced Mechanical Seal
Single Spring Unbalanced Mechanical Seal – Arohan Seals Mumbai

Single Spring Unbalanced Mechanical Seal Manufacturer in Mumbai

As a leading Single Spring Unbalanced Mechanical Seal Manufacturers in Mumbai, Arohan Seals provides high performance, reliable and economical sealing solutions for industries with low to medium pressure applications. Reliable leakage control and long duration of operation are achieved by the use of advanced manufacturing technology, precision engineered components and high quality raw materials in the design of our premium quality Single Spring Unbalanced Mechanical Seals. The seals are constructed from a robust single coil spring mechanism and offer outstanding sealing performance, lubrication and resistance to slurry particles, fibres and contaminated fluids clogging the seals.

Our sealing solutions are tough, simple to install and require little maintenance, and are used in industries like water treatment plants, sewage systems, agricultural irrigation, HVAC circulation systems, light chemical processing, food industries, and utility pumps. Our Single Spring Unbalanced Mechanical Seals are designed specifically for centrifugal pumps, utility pumps, compressors, mixers and other rotating equipment in low pressure applications.

Our selection of O-Ring Pusher Type, Elastomer Bellows Type, PTFE V-Wedge Type, Directional Conical Spring Type and Lug Driven Single Spring Unbalanced Mechanical Seal models can be used in a variety of industrial operating environments. Our sealing systems come in various shaft diameters, face materials and elastomer types, ensuring long-term durability and reliable operation in industrial applications. Arohan Seals is one of the trusted manufacturers, suppliers, and exporters of industrial mechanical seals in India and abroad with the strict quality control measures, competitive pricing and customer-centric service.

Single Spring Unbalanced Mechanical Seal Suppliers in India

Arohan Seals is one of the trusted Single Spring Unbalanced Mechanical Seal Suppliers in India that provides precision-engineered sealing solutions for pumps, rotating machinery and utility machines with low to medium pressure. Our sealing systems are specifically engineered to offer effective leakages, best-in-class clog resistance and reliable operation in industrial applications where slurry, muddy water, fibers and polluted liquids are present.

We provide Single Spring Unbalanced Mechanical Seals in Mumbai, Delhi, Chennai, Pune, Hyderabad, Ahmedabad, Gujarat and prominent industrial centers all over India. Produce engineering grade seals to international engineering standards, which are well sought after for their durability, smooth running and cost effectiveness.

Unbalanced seals with only one spring have a relatively simple inner design in which the total hydraulic pressure is directly applied to the sealing faces. The design enables a very high face closing force at low pressures and is therefore extremely useful for utility operations and for general industrial applications. Manufactured with high-grade materials like Carbon Graphite, Silicon Carbide, Tungsten Carbide, Ceramic, SS316, SS304, Viton, NBR, EPDM and HNBR to provide excellent wear resistance and corrosion protection. Our seals are chosen for dirty fluid applications for their reliability, simple design and ease of maintenance.


 

What is Single Spring Unbalanced Mechanical Seal

Single Spring Unbalanced Mechanical Seal is a type of rotary shaft sealing equipment that is used to seal the free flow of the fluid in the low or medium pressure industrial pumps and rotating machinery. In this type of seal, the rotating and stationary seal faces are constantly covered by a single heavy-duty coil spring, and the sealing surfaces are subjected to the entire hydraulic pressure of the process fluid.

An unbalanced seal has no stepped shaft geometry or pressure balancing system. This allows the hydraulic pressure to help keep the faces in close contact with the spring. That is because the seal is very effective when it comes to low pressure, but it isn't the best choice when it comes to extremely high pressure use, as it can be overheated and create friction.

Single-spring design has very good resistance to the slurry particles, fibers, sticky fluids to clog, because the open-coil spring structure does not allow the accumulation of debris. The seal also makes up for shaft movement, shaft thermal expansion and slight misalignment during operation.

Rugged, inexpensive, easy to maintain construction makes Single Spring Unbalanced Mechanical Seals popular in water pumps, sewage systems, agricultural irrigation equipment, HVAC circulation pumps, drainage systems and light chemical transfer.

Single Spring Unbalanced Mechanical Seal Price in India

Single Spring Unbalanced Mechanical Seal Price in India is determined by several factors including the size of the shaft, material of the face, pressure rating, seal arrangement, elastomer type and the requirements of the industry in which it is being used. We at Arohan Seals offer the highest quality sealing systems with good industrial performance and long operational reliability at competitive prices.

In general, unbalanced seals are less costly than balanced mechanical seals due to their simpler design structure and less manufacturing complexity. Use of top quality materials like Silicon Carbide, Tungsten Carbide, Hastelloy, PTFE, and Viton may affect the cost of the seal.

Best Spring Unbalanced Mechanical Seal Exporters in Mumbai

Arohan Seals is an established name as Single Spring Unbalanced Mechanical Seal Exporters in Mumbai and is providing the industries with reliable sealing solutions both nationally and internationally. We are using the latest production technology and precision engineering to produce export quality mechanical seals, which are designed to provide reliable sealing performance in challenging operating conditions.

Single Spring Unbalanced Mechanical Seals are exported in water treatment systems, sewage pumps, irrigation systems, HVAC systems, light chemical processing industries and other applications. The dimensional accuracy, corrosion resistance, ruggedness and long life of our products are highly appreciated.

Arohan Seals are known for their timely international delivery thanks to their strict quality inspection system, responsive technical support and reliable logistics.

Single Spring Unbalanced Mechanical Seal Applications

Single Spring Unbalanced Mechanical Seals are widely employed in low pressure industrial applications where clog resistant sealing performance and low cost of operation is required.

Common Applications

  • Water treatment and sewage transfer pumps
  • Water used for irrigation in farming and farm pumps.
  • Rubbish and wastewater disposal equipment.
  • Water pumps and water transfer systems that are used for utilities.
  • Light Chemical Processing Plants are located throughout the city.
  • Washdown systems for food and beverages.
  • Industrial cooling water circulation pumps
  • Transfer systems that use slurry and muddy water.
  • Low-pressure centrifugal pumps

Functions of Single Spring Unbalanced Mechanical Seal

Single Spring Unbalanced Mechanical Seals are used to carry out a number of critical sealing and equipment protection tasks in industrial applications.

Main Functions

  • Ensures that fluid doesn't leak out from rotating shafts
  • Operates without losing seal face contact during operation
  • Manages dirty and contaminated fluids competently
  • Compensates for shaft vibration and movement
  • Minimizes leak in low pressure applications
  • Does not cause a blockage from slurry and fibres.
  • Provides efficiency and reliability in the use of equipment
  • Reduces the cost of replacement for industrial pumps and machinery

Advantages of Single Spring Unbalanced Mechanical Seal

Major Advantages

  • It is a low cost sealing solution that is highly effective.
  • Simple construction, easily maintainable.
  • Suitable anti-clogging.
  • Best suited for slurry and dirty fluid applications.
  • Easy Install and Troubleshooting
  • For use in typical straight pump shafts
  • Heavy duty durable spring design
  • Assured low pressure sealing capability.
  • Reduce maintenance & replacement expenses

Disadvantages of Single Spring Unbalanced Mechanical Seal

Common Limitations

  • Not recommended for high pressure use.
  • Too much pressure can cause friction and heat.
  • Not very fast in extreme operating environments.
  • Film lubrication can not work under high pressure.
  • A shorter lifespan when running at high speeds
  • For advanced chemical applications, balanced seals might be necessary.

Types of Single Spring Unbalanced Mechanical Seal

Single Spring Unbalanced Mechanical Seals are available in different configurations designed for specific industrial applications and chemical compatibility requirements.

Common Types

Seal Type

Description

O-Ring Pusher Type

Uses dynamic elastomer O-ring for shaft sealing

Elastomer Bellows Type

Flexible rubber bellows for shaft misalignment

PTFE V-Wedge Type

Suitable for corrosive chemicals and acids

Directional Conical Spring Type

Rotation-dependent spring-driven design

Lug Driven Type

Bi-directional drive independent of shaft rotation

Cartridge Type

Pre-assembled design for simplified installation

Single Spring Unbalanced Mechanical Seal Price Table

Seal Type

Seal Size

Material Combination

Pressure Rating

Approx Price

Single Spring Unbalanced Mechanical Seal

25 mm

Carbon / Ceramic

0–10 bar

Below ₹1,000

O-Ring Pusher Type

35 mm

Carbon / Silicon Carbide

0–10 bar

₹1,001 – ₹2,000

Elastomer Bellows Type

40 mm

Carbon / TC

0–16 bar

₹2,001 – ₹4,000

PTFE V-Wedge Type

45 mm

SiC / SiC

0–16 bar

₹2,500 – ₹4,500

Directional Conical Spring Type

50 mm

TC / TC

0–25 bar

Above ₹4,001

Lug Driven Unbalanced Seal

65 mm

SiC / Carbon

0–25 bar

Above ₹5,000

Heavy Duty Utility Seal

75 mm

SiC / TC

Custom

Custom Pricing

Factors Affecting Seal Pricing

Parameter

Available Options

Seal Size

25 mm, 35 mm, 40 mm, 45 mm, 50 mm, 65 mm, 75 mm

Arrangement

Single Seal, Cartridge Seal, Replaceable Insert

Pressure Rating

0–10 bar, 0–16 bar, 0–25 bar

Face Material

Carbon, Silicon Carbide, Tungsten Carbide, Ceramic

Metal Components

SS304, SS316, SS316L, Hastelloy

Elastomer Material

NBR, FKM (Viton), EPDM, PTFE, HNBR

Business Type

Manufacturer, Exporter, Wholesaler, Retailer

Arohan Seals offers durable and affordable industrial sealing solutions with complete technical guidance, fast delivery, and customized engineering support for industrial applications across India.

Single Spring Unbalanced Mechanical Seal Technical Table

Technical Parameter

Specification

Seal Type

Single Spring Unbalanced Mechanical Seal

Shaft Size Range

25 mm – 75 mm

Pressure Capacity

Up to 25 bar

Operating Temperature

-20°C to +180°C

Maximum Speed

Up to 3000 RPM

Seal Face Materials

Carbon, SiC, TC, Ceramic

Metal Components

SS304, SS316, SS316L, Hastelloy

Elastomer Options

NBR, Viton, EPDM, PTFE, HNBR

Spring Design

Single Heavy-Duty Coil Spring

Mounting Type

Component / Cartridge

Application Media

Water, Slurry, Oils, Mild Chemicals

Single Spring Unbalanced Mechanical Seal Quality Inspections

All Single Spring Unbalanced Mechanical Seals at Arohan Seals are subjected to a rigorous quality testing and inspection regime, providing assurance for industrial reliability and exceptional durability.

Quality Inspection Procedures

  • The dimensional accuracy tests are carried out with precision.
  • Use seal face flatness tool to inspect flatness of faces.
  • Compression and load testing of springs during the spring season.
  • Leakage and pressure testing
  • A verifier is required to check the hardness and composition of the materials.
  • Corrosion resistance inspection
  • Shaft alignment and rotational testing.
  • Testing elastomers for their flexibility and compatibility.
  • Final visual check of defect free assembly

Seal quality and control is at a high level with advanced quality control processes to guarantee reliable sealing function, excellent wear characteristics, and industry reliability.

Why Choose Arohan Seals

Arohan Seals will provide high quality, long life and reliable performance mechanical single spring unbalanced seals to the customer.

What makes us the preferred choice for industries?

  • High quality industrial sealing solutions.
  • A variety of utility and heavy-duty seal designs are available.
  • Sewing together custom-made sealing products for industrial use
  • The process of precision manufacturing with a high degree of quality control
  • Competitive prices, with reliable durability.
  • Quick and reliable technical support.
  • High wear and corrosion resistance properties of the superior materials.
  • Sealing under severe conditions of contamination in dirty fluid systems.
  • A trusted manufacturer, supplier & exporter in India.
  • Sealing reliability for extended service life.Industrial sealing reliability that lasts a long time.

Upgrade Your Industrial Equipment with Reliable Sealing Solutions

For reliable leakage protection, easy operation and a cost-effective approach to industrial performance, Choose Arohan Seals for reliable Single Spring Unbalanced Mechanical Seals.


 


Premium Quality

Rigorously tested, precision-manufactured seals

Fast Delivery

Pan-India dispatch network

Factory Price

Direct manufacturer — no middlemen

Expert Support

Technical guidance before & after purchase

Material Options

Materials Used in Single Spring Unbalanced Mechanical Seal

The right material pairing directly determines how long a seal lasts and whether it handles your process fluid without failure. Below are the materials available for this seal type — we select or recommend based on your application.

Carbon / Graphite
Resin Impregnated Seal Face

Self-lubricating with good chemical resistance. The standard rotating face material for general-duty and water pump applications.

Ceramic
Alumina — 99.5% Al₂O₃ Seal Face

Good hardness and corrosion resistance at a competitive cost. Widely used as the stationary face in standard pump seals.

Stainless Steel
SS 304 / SS 316 / SS 316L Hardware

Springs, glands, sleeves, and retainer components. Corrosion-resistant structural integrity across all seal types.

NBR
Nitrile Rubber Secondary Seal

Standard O-ring material for oils, fuels, and general water service. Temperature range: -40°C to +120°C.

EPDM
Ethylene Propylene Diene Secondary Seal

Excellent resistance to hot water, steam, and dilute acids. Used where NBR would swell or degrade.

Material selection depends on your process fluid, temperature, pressure, and shaft speed. Contact our team for a recommendation specific to your application.

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Our Edge

Why Businesses Choose Arohan Seals

Proven Manufacturing Expertise

Decades of precision engineering behind every seal we produce in Mumbai.

Custom Engineering Solutions

Every order can be tailored to your exact dimensional and material specifications — no catalogue lock-in.

India-wide & Export Ready

We supply across India and export globally with reliable documentation and logistics.

Looking for Single Spring Unbalanced Mechanical Seal in Mumbai?

Talk to our team — get the right product, right price, and fastest delivery from our Mumbai facility.

+91-89768-12665
FAQs

Frequently Asked Questions – Single Spring Unbalanced Mechanical Seal

The biggest advantage is its simple, rugged, and cost-effective sealing design ideal for low-to-medium pressure industrial applications.

Yes, these seals are specially designed to handle slurry, muddy water, sewage media, fibers, and contaminated industrial fluids efficiently.

The open single coil spring prevents clogging caused by debris, sticky fluids, and slurry particles while maintaining stable sealing pressure.

These seals are widely used in water pumps, sewage systems, HVAC circulation units, irrigation equipment, drainage systems, and utility applications.

Unbalanced seals are mainly designed for low and moderate pressure applications. Extremely high-pressure operations generally require balanced mechanical seals.

Common materials include Carbon, Silicon Carbide, Tungsten Carbide, Ceramic, SS304, SS316, Viton, PTFE, EPDM, and NBR depending on application requirements.

Need a Reliable Mechanical Seal Partner? Let's Talk.

At Arohan Seals, we don't just sell mechanical seals — we solve sealing problems. Whether you need a standard replacement seal or a fully customised solution for a demanding application, our team is ready to help. We manufacture across a complete range — single spring, multi spring, bellow, cartridge, and agitator seals — and export to clients worldwide. Quality you can trust, delivery you can count on, and technical support whenever you need it.