John crane Type 21 mechanical seals for marine pump

Short Description:

The Type W21 is made of stainless steel, it provides a service range well beyond that which is possible with comparably priced seals of other metallurgical construction. The positive static seal between the bellows and the shaft, along with the free movement of the bellows, means that there is no sliding action could lead to shaft damage by fretting. This ensures that the seal will automatically compensate for normal shaft run-out and axial movements.

Analogue for: AESSEL P04, AESSEL P04T, Burgmann MG921 / D1-G55, Flowserve 110, Hermetica M112K.5SP, John Crane 21, LIDERING LRB01, Roten 21A, Sealol 43CU short, US Seal C, Vulcan 11


Product Detail

Product Tags

Our purpose would be to give good quality items at competitive rates, and top-notch service to consumers around the world. We are ISO9001, CE, and GS certified and strictly adhere to their quality specifications for John crane Type 21 mechanical seals for marine pump, Remember to deliver us your specifications and specifications, or truly feel cost-free to contact us with any questions or inquiries that you may have.
Our purpose would be to give good quality items at competitive rates, and top-notch service to consumers around the world. We are ISO9001, CE, and GS certified and strictly adhere to their quality specifications for Pump Mechanical Seal, Standard Mechanical Seals, Type 21 Mechanical Seal, Water Pump Shaft Seal, They are sturdy modeling and promoting effectively all over the world. Never ever disappearing major functions within a quick time, it’s a have to to suit your needs of fantastic good quality. Guided by the principle of Prudence, Efficiency, Union and Innovation. the corporation. ake an excellent efforts to expand its international trade, raise its organization. rofit and raise its export scale. We’re confident that we’re going to have a bright prospect and to be distributed all over the world in the years to come.

Features

• The drive band’s “dent and groove” design eliminates overstressing of the elastomer bellows to prevent bellows slip and protect the shaft and sleeve from wear
• Non-clogging, single-coil spring provides greater dependability than multiple spring designs and will not foul due to fluid contact
• Flexible elastomer bellows automatically compensates for abnormal shaft-end play, run-out, primary ring wear and equipment tolerances
• Self-aligning unit automatically adjusts for shaft end play and run-out
• Eliminates potential shaft fretting damage between the seal and shaft
• Positive mechanical drive protects the elastomer bellows from overstressing
• Single coil spring improves tolerance to clogging
• Simple to fit and field repairable
• Can be used with practically any type of mating ring

Operation Ranges

• Temperature: -40˚F to 400°F/-40˚C to 205°C (depending on materials used)
• Pressure: up to 150 psi(g)/11 bar(g)
• Speed: up to 2500 fpm/13 m/ s (depending on configuration and shaft size)
• This versatile seal can be used on a wide range of equipment including centrifugal, rotary and turbine pumps, compressors, mixers, blenders, chillers, agitators, and other rotary shaft equipment
• Ideal for pulp and paper, pool and spa, water, food processing, wastewater treatment, and other general applications

Recommended Application

  • Centrifugal Pumps
  • Slurry Pumps
  • Submersible Pumps
  • Mixers & Agitators
  • Compressors
  • Autoclaves
  • Pulpers

Combination Material

Rotary Face 
Carbon graphite resin impregnated
Silicon carbide (RBSIC)
Hot-Pressing Carbon C
Stationary Seat 
Aluminium oxide (Ceramic)
Silicon carbide (RBSIC)
Tungsten carbide

Auxiliary Seal
Nitrile-Butadiene-Rubber (NBR)
Fluorocarbon-Rubber (Viton)
Ethylene-Propylene-Diene (EPDM)
Spring
Stainless Steel (SUS304, SUS316)
Metal Parts
Stainless Steel (SUS304, SUS316)

product-description1

Type W21 DIMENSION DATA SHEET (INCHES)

product-description2Type 21 pump mechanical seal, water pump mechanical seal, pump mechanical seals,


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