Product
Flygt FS-35 35 mm Cartridge Mechanical Seal for 2670, 3153 & 5100
| Place of Origin | China |
| Brand | Hong Teng |
| Seal Reference | FS-35 |
| Nominal Size | 35 mm |
| Seal Configuration | Cartridge / Plug-In Style Mechanical Seal Assembly |
| Compatible Equipment | Selected Flygt 2670, 3153 and 5100 pump variants |
| Product Type | Aftermarket replacement mechanical seal |
| Ordering Check | Confirm complete Flygt model, numerical suffix, old seal, dimensions and material requirements before ordering. |
Product Details
The FS-35 is a 35 mm cartridge / plug-in style mechanical seal assembly supplied as an aftermarket replacement for selected Flygt pump applications. It is intended for maintenance, overhaul and seal replacement where the pump configuration and existing seal match the FS-35 reference.
Product Specifications
- Product Name: Flygt FS-35 35 mm Cartridge Mechanical Seal
- Seal Code / Reference: FS-35
- Nominal Size: 35 mm
- Seal Configuration: Cartridge / Plug-In Style Mechanical Seal Assembly
- Brand: Hong Teng
- Place of Origin: China
- Product Type: Aftermarket replacement mechanical seal
- Application: Repair and maintenance of selected compatible Flygt pumps
Compatible Flygt References
- Flygt 2670 — confirm the complete model and configuration before ordering
- Flygt 3153.090 / 3153.180
- Flygt 3153.091 / 3153.095 / 3153.181 / 3153.185
- Flygt 5100.210
- Flygt 5100.211
- Flygt 5100.220
- Flygt 5100.221
The pump family number alone is not sufficient for final seal selection. Please confirm the complete Flygt model designation, numerical suffix, existing seal assembly, critical dimensions and required materials. Compatibility should be confirmed before shipment.
Product Description
The Flygt FS-35 mechanical seal is a 35 mm cartridge / plug-in style replacement seal assembly for selected Flygt 2670, 3153 and 5100 pump variants. It is supplied for pump repair, scheduled maintenance and overhaul applications where the existing sealing arrangement matches the FS-35 reference.
Flygt pump family numbers should not be used as the only basis for seal selection. For example, a pump identified simply as “3153” may exist in different versions. The numerical suffix is therefore important when checking a replacement. References associated with this FS-35 application include 3153.090, 3153.180, 3153.091, 3153.095, 3153.181 and 3153.185.
If you are servicing a 3153.181 pump, see our Flygt 3153.181 mechanical seal replacement guide for additional inspection, removal and installation considerations.
Seal identification should also include dimensional verification. Even when two assemblies have a similar appearance, differences in shaft diameter, sleeve dimensions, working length, sealing faces or mounting details can affect compatibility. Our mechanical seal measurement guide explains which dimensions to record when checking an existing seal.
For other pump models and Flygt seal references, browse our Flygt replacement mechanical seals and search by the complete pump model whenever possible.
Flygt names, trademarks and model numbers are referenced only for identification of compatible applications. This FS-35 product is an independently manufactured aftermarket replacement mechanical seal supplied by Hong Teng and is not represented as an original Flygt product.
Application
Applications
The FS-35 35 mm mechanical seal is intended for replacement and maintenance work on selected Flygt pump variants using a compatible cartridge / plug-in style sealing arrangement.
- Selected Flygt 2670 pump applications
- Flygt 3153.090 and 3153.180
- Flygt 3153.091, 3153.095, 3153.181 and 3153.185
- Flygt 5100.210 and 5100.211
- Flygt 5100.220 and 5100.221
- Wastewater and sewage pump maintenance
- Pump overhaul and mechanical seal replacement
- Repair projects based on pump model, old seal sample or dimensional confirmation
Important Notice
A base pump number such as 3153 or 5100 does not by itself confirm the correct mechanical seal. Different pump variants, production versions, motor configurations or shaft arrangements may use different sealing components. Always confirm the complete model designation and existing seal before ordering.
How to Confirm an FS-35 35 mm Replacement Seal
Use the following information together when identifying an FS-35 replacement. Do not select the seal only from the pump family number or the 35 mm size.
Record the Full Flygt Model
Photograph the pump nameplate and record the complete model designation. For a 3153 pump, for example, confirm whether the unit is 3153.090, 3153.181 or another variant rather than providing only “3153.”
Confirm the FS-35 Reference
Compare the old mechanical seal with the FS-35 replacement reference. Keep the removed seal intact whenever possible and photograph the complete assembly, sealing faces and any markings.
Measure the Seal Assembly
Confirm the nominal 35 mm size together with other critical dimensions such as shaft or sleeve diameter, overall assembly dimensions and relevant installation dimensions. Similar-looking seals are not necessarily interchangeable.
Check Materials & Service
Confirm the existing sealing-face and elastomer materials where known, and provide information about the pumped medium and service conditions. Material suitability should be checked separately from dimensional compatibility.
Original Flygt Sealing-System Reference
Xylem describes the Flygt Plug-in Seal concept as an integrated unit containing inner and outer mechanical seals. The two seals operate independently while being supplied in one ready-to-install assembly. This original technical information is useful for understanding the Flygt sealing-system concept; it should not be interpreted as a guaranteed performance rating for the Hong Teng replacement product.
Frequently Asked Questions
Common questions about identifying and ordering the Flygt FS-35 mechanical seal replacement.
What is the Flygt FS-35 mechanical seal?
The FS-35 is a 35 mm cartridge / plug-in style mechanical seal assembly supplied by Hong Teng as an aftermarket replacement for selected Flygt pump applications. Final compatibility should be confirmed from the complete pump model, old seal and dimensions.
Which Flygt pumps use the FS-35 35 mm mechanical seal?
Reference applications include selected Flygt 2670 pumps, 3153.090, 3153.180, 3153.091, 3153.095, 3153.181, 3153.185, and selected 5100.210, 5100.211, 5100.220 and 5100.221 variants. The complete pump configuration should still be confirmed before ordering.
Does every Flygt 3153 pump use the FS-35 mechanical seal?
No. The 3153 number identifies a pump family and different numerical suffixes may correspond to different configurations. Always provide the complete designation, such as 3153.181, together with the existing mechanical seal and available dimensions.
Is the Flygt FS-35 a single mechanical seal?
It is better described as a cartridge / plug-in style mechanical seal assembly rather than a conventional single component seal. Flygt’s original Plug-in Seal concept integrates independent inner and outer mechanical seals into one ready-to-install unit. Replacement compatibility should be verified against the actual seal fitted to the pump.
What information should I send before ordering an FS-35 replacement seal?
Please send the complete Flygt pump model and numerical suffix, a clear pump nameplate photo, photos of the removed mechanical seal, available dimensions and required material information. These details help confirm compatibility before shipment.
Is this an original Flygt mechanical seal?
No. This product is an independently manufactured aftermarket replacement mechanical seal supplied by Hong Teng. Flygt trademarks and pump model numbers are used only to identify compatible applications.
Company Profile
Dongguan Hongteng Seals Co., Ltd. Company was established in 1996. The company has passed the GB/T19001-2016 idt ISO9001:2015 quality management system certification. The company has world-renowned pump mechanical seals, axe mechanical seals, fluid mechanical seals, metal bellows mechanical seals, container mechanical seals, rubber bellows mechanical seals, O-ring seals, PTFE mechanical seals, stainless steel oil seals, skeleton oil seals, hydraulic oil seals, automotive water seals and various mechanical seal materials, hard alloys, silicon carbide, carbon graphite, alumina, etc. There are Guangzhou Port, Shenzhen Port, and Foshan Port in the surrounding area, with developed and efficient logistics. The company has a stock warehouse of over 2000 square meters, which can efficiently and quickly deliver goods.
Production of Workshop
Exhibiton
Packing And Shipping
Customer Reviews
frequently asked questions
01. Q: Are you a factory or a trader?
A: We are a production factory and also sell on our own
02. Q: Where is your factory located?
A: Our factory is located in Dongguan City, and the nearest ports are Guangzhou Port and Shenzhen Port. Other ports can also be selected according to customer needs
03. Q: What is your delivery time in days?
A: For products in stock, we can ship immediately when receive the payment; For other projects, we need 10-25 days for mass production
04. Q: Do you provide free samples?
A: We usually do not provide free samples, and the sample fee can be deducted after the second order
05. Question: What is the most commonly used mode of transportation
A: The weight and size of mechanical seals are relatively small, and air freight, sea freight, and express delivery are usually the preferred transportation methods for customers.
06. Q:What payment methods do you accept?
A: For products in stock, 100% advance payment is required and immediate shipment will be made upon receipt of payment. For customized products, a 30% advance payment and a 70% payment must be made before the order is shipped. We accept T/T, Western Union, and also welcome customers to make payments through Alibaba
07. Q: Can you provide me with customized production
A: Yes, we can customize products and welcome OEM
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