Double Seal (ANFD)

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Double Seal (ANFD) Specification

Application
Agitated Nutsche Filter Dryer (ANFD), Pharmaceutical and Chemical Industries

Theory
Balanced Mechanical Seal Design

Hardness
60-70 HRC

Style
Double Seal, Back-to-Back Arrangement

Material
SS304, SS316, Carbon Steel

Temperature
-20C to 180C

Pressure
Up to 10 bar

Speed
Up to 3000 rpm

Function
Dynamic Mechanical Seal

Size
25 mm to 150 mm shaft size

Structure
Compact Cartridge Construction

About Double Seal (ANFD)

Material

Seal Ring Faces : Carbon and SiC
Seat Faces : SiC and TC
Elastomer : Viton, PTFE, EPDM, NBR, FFKM
MOC : SS 316, Duplex, Super Duplex, Hastelloy C, Monal

Operating Capabilities

Shaft Dia. : 20mm to 200mm
Pressure : Up to to 5 bar
Temperature : -30 degree C to 260 degreeC AC (Depending upon Elastomer)
Speed: 900 r.p.m.

Technical Details

Advanced Zero Leakage Technology

Our Double Seal (ANFD) is designed with a balanced mechanical seal and mirror-polished wet end to ensure zero leakage. This is essential for handling hazardous, corrosive, or toxic media, making it highly reliable for sensitive processes in pharmaceutical and chemical applications.

Versatile Material Compatibility

The seal incorporates a wide range of premium materials-carbon, silicon carbide, tungsten carbide seal faces; Viton, EPDM, PTFE elastomers; and stainless steel/carbon rotary parts. This exceptional compatibility allows the seal to withstand aggressive chemicals and extreme temperatures, supporting durability and long service life.

Easy Cartridge Installation

Featuring a compact cartridge mounting style, the Double Seal (ANFD) simplifies installation and maintenance. Its modular construction enables quick replacement and minimizes downtime, which is particularly advantageous in high-throughput industrial environments.

FAQ's of Double Seal (ANFD):

Q: How does the Double Seal (ANFD) prevent leakage in corrosive and toxic media applications?

A: The Double Seal (ANFD) uses a back-to-back balanced seal arrangement with premium seal face and elastomer materials. Its mirror-polished wet end and compact cartridge design work together to prevent process fluid leakage, ensuring utmost safety in corrosive and toxic environments.

Q: What is the process for installing the Double Seal (ANFD) on ANFD equipment?

A: Installation is straightforward due to its cartridge mounting style. The seal is delivered as a pre-assembled unit ready to be fitted onto the shaft, making installation quick and minimizing the need for intensive alignment or assembly procedures.

Q: When should external flush lubrication be employed with this seal?

A: External flush lubrication is recommended when handling media prone to crystallization, high viscosity, or sticky residues. It helps cool and clean the seal faces, optimizing seal life and maintaining zero leakage, especially in demanding pharmaceutical or chemical processing environments.

Q: Where is this mechanical seal most effectively used?

A: The Double Seal (ANFD) is especially suitable for Agitated Nutsche Filter Dryers used in pharmaceutical and chemical industries. Its robust construction and resistance to aggressive media make it ideal for processing corrosive or toxic fluids where absolute containment is essential.

Q: What are the benefits of choosing a double balanced mechanical seal design?

A: A double balanced seal design accommodates both axial and radial shaft movements, reduces seal face wear, and promotes zero leakage. This translates into longer service intervals, enhanced safety, and reliable performance under varying process conditions.

Q: Can this seal handle high-pressure and high-speed operations?

A: Yes, the Double Seal (ANFD) is engineered to operate at pressures up to 10 bar and shaft speeds up to 3000 rpm. Its robust materials and design ensure consistent, safe function even during intensive operation.

Q: What is the temperature range and supported shaft sizes for the Double Seal (ANFD)?

A: This seal functions reliably within a temperature range of -20C to 180C and supports shafts from 25 mm to 150 mm in diameter, covering the requirements of most pharmaceutical and chemical ANFD setups.

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