Aftermarket replacement seals for selected Grundfos CR applications | 12 mm | 16 mm | 22 mm
Luwint GFC is a cartridge-style mechanical seal range for selected Grundfos CR series pumps. The cartridge assembly brings the sealing components together in a compact unit for replacement during pump servicing.
The GFC range includes 12 mm, 16 mm and 22 mm shaft sizes. Selecting the correct replacement requires the pump identification, original seal specification and cartridge dimensions. Shaft diameter alone does not establish compatibility with every CR pump version.
Why Choose the GFC
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Cartridge-style construction: keeps the sealing components together as an assembly for handling and installation.
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Three catalogue shaft sizes: 12 mm, 16 mm and 22 mm options provide a starting point for matching selected CR applications.
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Pump-specific identification: selection considers the existing cartridge, mounting arrangement and pump version.
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Material matching: the proposed face pairing and elastomer can be checked against the liquid and operating conditions.
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Sydney selection support: assistance with identifying the replacement from nameplate details, photos and measurements.
Choosing the Correct GFC
Start with a clear photo of the pump nameplate and the original seal or service-kit reference.
| Detail to confirm | What to provide |
|---|---|
| Pump identification | Full model designation and product number |
| Original seal | Seal code or service-kit number, where available |
| Shaft diameter | 12 mm, 16 mm or 22 mm |
| Cartridge configuration | Photos of the mounting arrangement and removed seal |
| Installation dimensions | Cartridge length, diameters and locating features |
| Operating duty | Liquid, temperature, pressure and shaft speed |
Different CR pump configurations can use different seal specifications. Match the complete assembly and materials before ordering.
Catalogue Sizes
| Parameter | Catalogue information |
|---|---|
| Product range | GFC |
| Construction | Cartridge-style mechanical seal |
| Shaft sizes listed | 12 mm, 16 mm and 22 mm |
| Application reference | Selected Grundfos CR series pumps |
Pressure, temperature and speed limits must be confirmed for the supplied seal configuration. The pump’s maximum rating should not be used as the replacement seal’s rating without checking its materials and duty.
Application Cross-Reference
| Luwint | Corresponding application |
|---|---|
| GFC | Selected Grundfos CR cartridge-seal installations |
This is an application-family reference. Confirm the OEM seal or service-kit number, mounting dimensions and material combination to establish suitability for the specific pump.
Where It Is Used in Australia
With a verified pump and seal match, GFC can be selected for CR pump duties such as:
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Water boosting and pressure systems
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Water treatment and filtration
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Building-services circulation
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Industrial water transfer and utility systems
Selection should account for fluid chemistry, temperature, pressure and any solids in the liquid.
Materials and Configuration
Contact Luwint to confirm the face pairing, elastomer and metal specification available for the required GFC size.
Provide the original seal code where possible, together with the liquid and operating conditions. Confirm any associated O-rings, gaskets or installation components required with the quotation.
Sydney Supply. Help with Selection.
Ask Luwint to confirm current availability, pricing and dispatch timing.
Send the pump nameplate, original seal reference, shaft diameter and clear photos of the removed cartridge. Include key dimensions, liquid, operating temperature and pressure.
Ask us for the GFC catalogue page and relevant dimensional information.
Contact: Wayne Liao
Email: wayne@luwintonline.com
Mobile: 0433 986 633
LUWINT supplies aftermarket replacement products for original equipment applications. We are an independent supplier and are not affiliated with or endorsed by Grundfos. Brand names and model references are used solely for identification and cross-reference.