Mechanical Shaft Seals

Get a Price/Quote

MOQ : 1 Piece

Mechanical Shaft Seals Specification

Theory
Mechanical Contact Seal

Application
Pumps, Compressors, Agitators, Mixers, Blowers

Hardness
70-85 Shore A (elastomer parts)

Usage
Industrial

Style
Mechanical Seal

Material
PTFE

Temperature
-20C to 180C

Pressure
Up to 25 bar

Product Type
Mechanical Shaft Seals

Speed
Up to 20 m/s

Color
Sliver

Function
Sealing rotating shafts against leakage of fluids

Size
12 mm to 100 mm shaft diameter

Structure
Single Spring, Multi-spring, Conical Spring, Metal Bellows

Face Combination
Carbon vs Ceramic, SiC vs SiC

Seal Type
Single, Double, Tandem

Shaft Tolerance
h6 or as specified

Leakage Rate
0.5 ml/h (API 682)

Rotational Direction
Bi-directional and Uni-directional

Spring Material
Stainless Steel (SS304/SS316)

Surface Finish
0.2-0.8 m Ra (Sliding Face)

O-Ring Material
NBR, Viton, EPDM

Mounting
Cartridge and Component Type

About Mechanical Shaft Seals

Mechanical Shaft Seals

Keeping in mind the precise demands of our clients, we offer a wide range of Mechanical Shaft Seals. These are available with us in various sizes, thickness and dimensions as per the precise demands of our clients. Further, in order to ensure quality and avoid any kind of flaw, these seals are tested against various quality parameters. Our products are acclaimed for their anti corrosive nature and high functional efficiency.

Features:

Made of international standard
Replacement against any make of shaft seals
Longer life & minimum maintenance
Perfect sealing
Precision lapped surface
Seal face carbon, tungsten carbides, silicon carbides, high alumina ceramic, S.S 316L, 304 and PTFE field

Mechanical seals are used in:

Water pump seals
Chemical pump seals
Seals for agitator
Centrifugal pump seals
Compressors seals
Rotary pump seals
Textile dyeing seals
Textile machinery's seals
Fuel oil pumps seals for boiler
Solvent pumps seals
Automobiles pumps seals
Milk pumps seals
Oil processing & refining plant seals
Reaction vessels seals

Product details

Rotary Ring	Ceramic, Silicon Carbide
Pressure	1.0-2.0 MPa
Shape	Round
Stationary Ring	Carbon, Silicon Carbide
Spring and Metal Parts	Stainless Steel
Speed	10-15 m/s
Secondary Seal	NBR, EPDM, Viton

Reliable Sealing Solutions for Industrial Applications

Engineered for reliability, our mechanical shaft seals serve a wide range of industries and equipment, including pumps, compressors, mixers, and agitators. With configurations suitable for both single and double seals, and adaptable structures ranging from single spring to metal bellows, you gain robust protection against fluid leakage even under demanding operating conditions.

Material Options Match Performance Needs

Choose from a variety of face combinations, including durable SiC vs SiC and carbon vs ceramic, with O-rings in NBR, Viton, or EPDM to suit various chemical and temperature demands. The use of high-grade stainless steel for springs and PTFE components ensures both mechanical strength and chemical compatibility, while a precise surface finish enhances long-term performance.

Designed for User Convenience and Versatility

Offered in both cartridge and component types, these seals streamline installation and maintenance. With standardized shaft tolerance and hardness levels in elastomer parts, you can easily integrate them into existing equipment or specify for new projects. A comprehensive size range covers shaft diameters from 12 mm to 100 mm, ensuring coverage for diverse application requirements.

FAQ's of Mechanical Shaft Seals:

Q: How do mechanical shaft seals prevent fluid leakage in rotating equipment?

A: Mechanical shaft seals work by maintaining a tight seal between a stationary and a rotating surface, typically using precisely matched face materials like carbon vs ceramic or SiC vs SiC. The spring mechanism and elastomeric O-rings ensure continuous contact and adaptability to shaft movement, effectively sealing fluids under varying pressures and speeds.

Q: What is the difference between cartridge and component type mechanical seals?

A: Cartridge seals come pre-assembled in a housing for straightforward installation and alignment, minimizing installation errors and downtime. Component seals consist of separate elements that need to be assembled directly on the equipment shaft, offering flexibility for customized applications and replacement parts.

Q: When should I choose a single, double, or tandem seal configuration?

A: Single seals are ideal for applications involving non-hazardous liquids and lower pressures. Double seals provide extra protection in handling toxic or abrasive fluids, while tandem seals are designed for high-reliability scenarios where leakage must be strictly controlled, such as in chemical processing or hazardous environments.

Q: Where are these shaft seals commonly used in industry?

A: These mechanical shaft seals are widely utilized in pumps, compressors, agitators, mixers, and blowers across industries such as water treatment, chemical processing, petrochemicals, and general manufacturing, wherever rotating shafts require effective containment of process fluids.

Q: What is the typical leakage rate for these mechanical seals, and why is it important?

A: According to API 682 standards, the typical leakage rate is up to 0.5 ml/h. Maintaining this low leakage rate is crucial for environmental compliance, fluid containment, and reliable operation of process equipment, minimizing both product loss and potential risks to personnel or equipment.

Q: How do I select the appropriate O-ring and face material for my application?

A: Selection depends on the fluid being handled, operating temperature, and chemical compatibility. NBR is suitable for oils and water at moderate temperatures, Viton for higher temperatures and aggressive chemicals, and EPDM for polar solvents. For face combinations, carbon vs ceramic is suited for general-purpose use, while SiC vs SiC provides abrasion resistance for harsher environments.

Q: What are the benefits of the 0.2-0.8 m Ra sliding face finish in these seals?

A: A finely polished surface finish ensures minimal friction and optimal sealing capability between the rotating and stationary faces. This reduces wear, prolongs seal life, and consistently maintains the low leakage rates required for high-performance industrial operations.

Tell us about your requirement