TB1, TB1F and TB2 ready-fitted mechanical seals are designed for the seal chamber of the standard gland packing casing cover and for the standard shaft without extra shaft sleeve, for different pump types like AHLSTAR process pump range types A, APP, NPP, WPP.
The ready-fitted seals are designed as an organic part of certain centrifugal pump types without any extra components to get as much space between the seal and casing cover as possible for maximizing reliable operation.
The ready-fitted seals are fixed to the casing cover with a standard flange of the pump or with the flange of the seal.
The seal is fixed on the shaft without extra components such as shaft sleeve to get optimal material wall thickness for highly reliable operation.
The ready-fitted seals are simple and robust for fast and easy installation and maintenance. They do not need any complicated setting clips like cartridge seals do.
The single seal has been designed so that any pressure variations or dropouts of the pumped liquid do not open the seal faces.
The double seal has been designed so that any pressure variations or dropouts either on the side of the pumped liquid or sealing liquid do not open the seal faces. The seal faces do not open in the case of vacuum pressure, either.
The double seal is intended for use especially in closed circulation sealing liquid systems. The seal has a structure that pumps sealing liquid, so a separate circulation pump for sealing liquid is not needed.
The seal faces lie on the flexible O-rings so that they do not stand at an angle but are aligned accurately according to the shaft, giving a long and reliable operation time.
Due to the simple design of the ready-fitted seal, the cost of the seal is much lower than the cost of cartridge mechanical seals.
About FBU • FBU was established in 2007, is specialized in designing, developing, and manufacturing mechanical seals and sealing support system. Testing Capability • Secondary dimension image measuring instrument, digital display altimeter, spring power tester, shore hardness tester, plane flat crystal, outer diameter micrometer, inner diameter dial gauge, caliper with table, etc advanced first-class testing equipment is guarantee of product quality and reliability! Certificate of Approval • FBU has been audited by LRQA ISO 9001: 2015 certification and all products are manufactured in accordance with international standards ISO, ANSl, DIN, and APl. FAQ: • Are you a factory or a trade company? → We are a factory with more than 13 years industrial experience.
• Where is your company located? → We are located in Suzhou, China.
• Do you have a quality management system? → We have been audited by LRQA ISO9001:2015 certification and all products are manufactured
in accordance with international standards ISO, ANSI, DIN and API.
• Which payment terms can you accept? → T/T, L/C, D/P, Western Union, PayPal.
• How long is the normal delivery time? →Within 7-20days. If have stock, it about 2-3days.
• What 's your shipping ways? → By sea, by air and by express (DHL, Fedex, UPS, TNT, EMS etc.)
Audited Supplier 
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