Product
FBD Replacement Mechanical Seal for John Crane
| Seal Model | FBD |
|---|---|
| Seal Construction | Rubber bellows mechanical seal |
| Spring Arrangement | Single coil spring, as illustrated |
| Supplier | Hong Teng |
| Replacement Matching | Compare the spring assembly and separate stationary seat |
| Size and Materials | Confirm shaft size, working length and material configuration |
Product Details
| Product Name | FBD Replacement Mechanical Seal for John Crane |
|---|---|
| Supplier | Hong Teng |
| Model / Reference | FBD |
| Construction | Rubber bellows with a single coil spring and separate stationary seat |
| Reference Basis | Confirm the complete installed seal reference rather than pump brand alone |
| Shaft Fit | Measure the shaft or sleeve at the seal mounting position |
| Stationary Seat Fit | Compare seat outside diameter, thickness and mounting profile |
| Installed Length | Confirm the specified working length for the spring assembly |
| Seal Faces | Confirm the required face-material pairing; appearance does not establish grade |
| Bellows / Elastomer | Select the elastomer for the liquid, cleaning exposure and temperature |
| Installation Orientation | Check the drive and spring arrangement against the existing seal or drawing |
| Supply Scope | Confirm whether the quoted set includes the rotating assembly and stationary seat |
Product Description
The FBD replacement mechanical seal shown here uses a rubber bellows and single coil spring, with the stationary seat supplied as a separate illustrated component. This component arrangement should be checked against the removed seal before a replacement set is specified.
A useful comparison includes the spring assembly from the side, the inner shaft-contact area and both sides of the stationary seat. Record the shaft diameter, seat fit and required installed working length. Free spring length alone does not define the installed setting.
Specify the liquid, operating temperature, pressure and speed when selecting the face pairing and elastomer. A white or dark ring in a photograph does not confirm its material grade. The supplied FBD configuration and included components should be agreed with the quotation.
Explore our pump mechanical seals, compare the construction choices in Rubber vs Metal Bellows Mechanical Seals: How to Choose, or follow the mechanical seal identification guide when the old reference is uncertain.
John Crane is a reference brand for replacement identification. This product is independently supplied by Hong Teng and is not represented as an original John Crane product. Final compatibility depends on the confirmed dimensions, materials and installation.
Application
Applications
- Pump maintenance using a verified FBD-type rubber bellows seal arrangement.
- Replacement of a matched spring assembly and stationary seat during pump overhaul.
- Repair and sample-matching projects with confirmed mounting dimensions and fluid compatibility.
How to Confirm the Correct Replacement
- Record the old seal reference and the full pump model.
- Provide separate photographs of the spring assembly, rubber bellows and stationary seat.
- Check shaft diameter, seat dimensions and the required installed length with units.
- State fluid conditions and confirm the face pairing, elastomer and complete set contents.
Selection Questions
Can I replace only the spring assembly and reuse the old seat?
Do not assume the old seat is suitable. Its condition, face dimensions, materials and fit must be evaluated before agreeing the replacement scope.
Can the ring material be identified from its colour?
No. Specify the required material grade or provide the original specification; colour alone is not a reliable material identifier.
Send your seal reference, photos and dimensions for a quotation.
Product Reference Images
Reference photographs assist identification. Confirm the exact supplied parts and specification with the quotation; photographs do not establish material grades or dimensional tolerances.
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
