Automotive Water Pump Mechanical Seals: F-12, F-16, F-18, F-20
F-12, F-16, F-18 and F-20 replacement mechanical seals for automotive water pumps, with standard sizes of 12, 16, 18 and 20 mm. Compare the original seal dimensions, coolant and operating conditions before selecting a BT-A2 replacement.
Automotive Water Pump Seal Overview
The F-12, F-16, F-18 and F-20 mechanical seals are replacement options for automotive water pumps. The listed standard sizes are 12, 16, 18 and 20 mm. Select the seal using the original pump drawing or a measured sample, together with the coolant and operating conditions.
The EagleBurgmann BT-A2 reference is a starting point for replacement selection. It does not establish compatibility with every BT-A2 installation or vehicle. Confirm the complete dimensions and material specification before ordering.
Sizes and Operating Limits
| Model references | F-12, F-16, F-18, F-20 |
|---|---|
| Standard sizes | 12 mm, 16 mm, 18 mm, 20 mm |
| Temperature range | -20 to +140 °C |
| Maximum sliding speed | 10 m/s |
| Maximum pressure | 5 bar |
These are range limits, not a guarantee that all maximum values apply simultaneously. The suitable operating range depends on the selected materials, coolant and installation. Confirm the specification for the required size before purchase.
Material Options
- Seal ring: carbon (Car) or silicon carbide (SiC).
- Secondary seal: NBR, EPDM or Viton options.
- Spring and metal parts: 304 or 316 stainless steel.
Provide the coolant type, mixture and temperature when requesting a quotation so that the elastomer and face material can be checked for the application. The listed options are not interchangeable in every fluid.
Check Fit Before Ordering
- Confirm the water pump manufacturer, pump part number and existing seal marking.
- Measure the shaft or sleeve diameter, installed working length and seal housing dimensions.
- Check the stationary seat dimensions and the available space around the seal.
- Compare the installation arrangement with the original drawing; a matching nominal size alone is insufficient.
The photos below show the product from different angles. Use a dimensioned drawing or sample measurements to verify fit, rather than estimating dimensions from the photos.
Request a Seal Quotation
Send the required quantity, seal marking, pump part number, photos or drawing, measured dimensions, coolant details, temperature and pressure. If available, include the vehicle and engine information to help identify the original pump.
Send your water pump seal details for a quotation. You can also browse our pump mechanical seals and Burgmann replacement seal selection guide.
Automotive Water Pump Seal FAQ
Which sizes are available?
The listed standard sizes are 12, 16, 18 and 20 mm. Provide the original seal dimensions to confirm which version fits your pump.
Can I order by the BT-A2 reference alone?
No. Check the shaft diameter, installed working length, stationary seat and housing dimensions, as well as the materials and coolant. The reference alone does not confirm vehicle or pump compatibility.
What if the old seal has no readable marking?
Send clear photos from several angles, the water pump part number and a dimensioned drawing or measurements of the old seal. Include the required quantity and operating conditions with your enquiry.
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Selection and Ordering
Four Standard Sizes
This range lists 12, 16, 18 and 20 mm sizes. Confirm the complete installation dimensions when selecting an F-12, F-16, F-18 or F-20 seal.
Material Selection
Choose from the listed face, elastomer and stainless steel options after checking the coolant and operating conditions.
Replacement Fit Check
Use the BT-A2 reference together with the original seal drawing, installed length and seat dimensions to confirm the replacement.
Quotation Preparation
Send photos or a drawing, the pump part number, required quantity and coolant details so the requested seal can be identified.
Production Process
Production Line
Equipment
