Grundfos Pump Mechanical Seals
Hong Teng supplies aftermarket Grundfos pump mechanical seals for selected vertical multistage, compact horizontal multistage, wastewater, sewage and industrial pump applications.
Our current Grundfos mechanical seal range includes products for selected CR, CRI, CRN, CM, CH, CHI, CRK, SE and related pump configurations, including component and cartridge seal designs with different shaft sizes and material options.
Browse the available Grundfos pump seals below, or send us the complete pump model, product number, shaft-seal code, nameplate, old seal photos and dimensions for compatibility checking before ordering.
Find a Grundfos Mechanical Seal by Pump Series / Reference
Use the table below as a quick reference for Grundfos replacement mechanical seals currently available from Hong Teng. Grundfos pumps within the same family can use different shaft-seal codes, sizes, face materials and elastomers, so the complete pump model, product number and existing seal should always be confirmed before ordering.
| Pump Series / Application | Seal Reference | Size / Variant | Seal Type | Action |
|---|---|---|---|---|
| CR / CRI / CRN Multistage Pumps | GLF-CR | 12 / 16 / 22 mm | CR-Family Multistage Seal | View Seal |
| CR / CRI / CRN Multistage Pumps | GLF-ARCB | 12 / 16 / 22 mm | CR-Family Multistage Seal | View Seal |
| Selected CR / CRN Pumps | GLF-G04 / 985204 | 16 mm | Multistage Pump Seal | View Seal |
| CRK2-4 Pump Applications | GLF-G04 / 415080 | 12 mm | Multistage Pump Seal | View Seal |
| CM Multistage Pumps | GLF-CM / BQQV / BQQE | 12 / 16 mm | Compact Multistage Pump Seal | View Seal |
| CHI Multistage Pumps | GLF-G3 / BQQV / BQQE | 12 / 16 mm | Horizontal Multistage Seal | View Seal |
| CH 2 / CH 4 Pump Applications | GLF-CH | 12 mm | Compact Pump Seal | View Seal |
| SE Wastewater Pump Applications | GLF-SE / 96102361 / 96102360 | 22 / 32 mm | Wastewater Pump Seal |
View Seal With Pin
View Seal Without Pin Confirm the pin design, dimensions and original reference for the selected variant. The references and sizes in this row are not assigned to either variant. |
| Selected Sewage Pump Applications | SARLIN / 98119099 | 43 mm | Cartridge Mechanical Seal | View Seal |
| Selected Sewage / Wastewater Pumps | GLF-SRL-SA | 32L / 38L / 50L / 65L Variants | Cartridge Mechanical Seal | View Seal |
Cannot find your Grundfos seal? Send us the pump nameplate, product number, shaft-seal code, old seal photos and dimensions for identification →
All Grundfos Replacement Mechanical Seals
Browse our currently available replacement mechanical seals for selected Grundfos CR, CRN, CRI, CM, CH, CHI, CRK, SE, sewage and wastewater pump applications.
If the exact Grundfos seal you need is not listed, send us the complete pump model, product number, shaft-seal code, pump nameplate, old seal photos and dimensions for identification.
Compatibility varies by pump version and seal arrangement. Please confirm the pump model and existing seal before ordering.
Grundfos Pump Families & Seal Configurations
Grundfos uses different mechanical shaft-seal designs across vertical multistage, compact horizontal multistage and wastewater pump families. The correct replacement depends on the complete pump version, shaft-seal code, dimensions, materials and operating conditions.
Grundfos CR / CRI / CRN Pumps
CR-family pumps are vertical multistage centrifugal pumps used for water supply, pressure boosting, water treatment and industrial applications. Grundfos CR, CRI and CRN pumps use cartridge-type mechanical shaft seals, but the exact seal configuration and material code can vary by pump size and duty.
Grundfos CM / CME Pumps
CM and CME are compact horizontal multistage pump families used in water treatment, washing, temperature control, building services and industrial systems. Shaft-seal dimensions and material variants should be checked from the exact pump product information.
Grundfos CH / CHI / CRK Pumps
Selected CH, CHI and CRK pumps use compact mechanical shaft seals that may look similar to seals used in other Grundfos multistage families. Shaft diameter alone is not enough to establish interchangeability because seat geometry and installed length can differ.
Grundfos SE & Sewage Pump Applications
Grundfos wastewater and sewage pumps can use cartridge or double mechanical shaft-seal arrangements designed for solids-handling applications. Replacement identification should include the pump model, seal position, complete cartridge geometry and existing material combination.
Why the Full Grundfos Product Information Matters
Two pumps carrying the same family name may have different product numbers, production versions, shaft-seal codes or material configurations. For Grundfos replacement work, the complete product number and shaft-seal code are usually more useful than the general pump family alone.
How to Identify the Correct Grundfos Mechanical Seal
A Grundfos pump family name alone is not enough to identify every replacement shaft seal. Use the complete pump identity, original shaft-seal information, physical seal dimensions and operating conditions together before confirming a replacement.
Record the Complete Pump Identity
Photograph the full Grundfos nameplate and record the complete pump model, product number, serial or production information and motor details. Do not rely only on a general series name such as CR, CM or SE.
Find the Shaft-Seal or Service-Kit Code
Record the complete shaft-seal code and any available spare-part or service-kit number exactly as shown. Small differences in the code can indicate different seal constructions or material combinations.
Inspect and Measure the Removed Seal
Measure the shaft or sleeve diameter, rotating assembly, stationary seat, free length and working length. Cartridge seals also require gland, sleeve, bolt-pattern and overall assembly measurements.
Confirm Materials & Pump Service
Record the pumped liquid, temperature, pressure, solids and existing face and elastomer materials. The replacement must satisfy both dimensional compatibility and actual operating conditions.
Information to Send Us
- Complete Grundfos pump model
- Pump nameplate photo
- Grundfos product number
- Production / serial information
- Existing shaft-seal code
- Service-kit or spare-part number
- Photos of the complete old seal
- Shaft or sleeve diameter
- Stationary-seat dimensions
- Seal free / working length
- Pumped medium and temperature
- Required quantity
Mechanical Seal Materials for Grundfos Pumps
Grundfos mechanical shaft-seal materials vary according to the pump family, operating liquid, temperature, pressure and required durability. Match the replacement material configuration to the original shaft-seal code and the actual pump service.
Carbon / Silicon Carbide
Carbon and silicon-carbide face combinations can be considered for selected clean-water, pressure-boosting, circulation and industrial water applications when they match the original seal specification and operating conditions.
SiC / SiC & Tungsten Carbide Options
Hard face combinations such as silicon carbide and tungsten carbide are available in selected Hong Teng Grundfos replacement configurations for more demanding, abrasive or wastewater applications where higher wear resistance is required.
EPDM, FKM & AFLAS Options
Elastomer selection depends on the pumped liquid and temperature. Selected Grundfos replacement seals in our range are available with EPDM, FKM and AFLAS-type secondary sealing options according to the required configuration.
Keep the Complete Grundfos Shaft-Seal Code
Grundfos shaft-seal coding can contain information relating to the seal design, rotating face, stationary face and secondary-seal material. A one-letter change can therefore represent an important material difference. Record the complete code instead of shortening it when requesting a replacement.
- Shaft-seal type
- Rotating face material
- Stationary face material
- Secondary-seal material
- Pumped liquid compatibility
- Temperature and pressure
Related Grundfos & Mechanical Seal Guides
Use these guides to identify Grundfos replacement seals, compare pump information, measure an unknown seal and correctly handle cartridge-seal installation.
How to Select a Replacement Mechanical Seal for Grundfos Pumps
Learn how to combine the Grundfos pump model, product number, shaft-seal code, dimensions, materials and operating conditions.
Read Guide → IdentificationHow to Identify the Correct Mechanical Seal for Your Pump
Review the equipment data, seal construction, dimensions and photographs required when the original replacement reference is unclear.
Read Guide → MeasurementHow to Measure a Mechanical Seal
Measure the shaft, rotating component, stationary seat, free length and installed working length before ordering an unknown replacement.
Read Guide → Cartridge InstallationCartridge Mechanical Seal Installation Guide
Review gland installation, drive-collar setting, setting clips, shaft inspection, venting and startup checks for cartridge seals.
Read Guide →Frequently Asked Questions About Grundfos Mechanical Seals
Find answers to common questions about identifying and replacing mechanical seals for Grundfos pumps.
How do I identify the correct mechanical seal for a Grundfos pump?
Start with the complete pump model, Grundfos product number and pump nameplate. Then record the existing shaft-seal code or service-kit number and compare the old seal dimensions, construction and materials. Do not select a replacement only from the series name.
Do all Grundfos CR, CRI and CRN pumps use the same mechanical seal?
No. CR-family pumps are available in many sizes, material versions and operating configurations. The shaft-seal type, size, face materials and elastomer can vary, so the complete pump and shaft-seal information should be checked before ordering.
What does the Grundfos shaft-seal code tell me?
A Grundfos shaft-seal code can contain information relating to the shaft-seal design, rotating seal face, stationary seal face and secondary sealing material. Record the complete code exactly because a one-letter difference can indicate a different configuration.
Which replacement seals are available for Grundfos CM and CHI pumps?
Our current range includes selected GLF-CM replacement seals in 12 mm and 16 mm configurations and GLF-G3 replacements for selected CHI applications. References such as BQQV and BQQE should still be checked against the complete pump information and original seal before ordering.
Do you supply mechanical seals for Grundfos wastewater and sewage pumps?
Yes. Our current range includes selected GLF-SE, 43 mm SARLIN and GLF-SRL-SA cartridge replacement seals for wastewater and sewage pump applications. Final compatibility must be confirmed from the exact pump model, installation arrangement, cartridge dimensions and existing seal.
Can you identify a Grundfos mechanical seal from photos and dimensions?
In many cases, yes. Send the complete pump nameplate, product number, shaft-seal code if available, photographs of the complete removed seal, shaft diameter, stationary-seat dimensions and working length for comparison.
Are these original Grundfos mechanical seals?
No. The products shown on this page are aftermarket replacement mechanical seals independently supplied by Hong Teng. Grundfos and any pump-series, shaft-seal or spare-part references are used only for compatibility identification.
Need Help Finding a Grundfos Mechanical Seal?
Send us your Grundfos pump model, product number, shaft-seal code, nameplate, old seal photos and dimensions. We can help compare the available replacement options before quotation.
Grundfos and other manufacturer names, pump-series names, shaft-seal codes and reference numbers are used only for compatibility identification. Replacement products are independently supplied by Hong Teng.
