Grundfos CR / CRE / CRI / CRIE / CRN / CRNE 1/3/5 HQQE 12mm Shaft Seal – 96441877 / 96455086 #4939

Grundfos CR / CRI / CRN 1/3/5 HQQE 12mm Shaft Seal – 96441877 / 96455086 #4939

This listing is for a Grundfos HQQE 12mm mechanical shaft seal for selected CR, CRE, CRI, CRIE, CRN and CRNE vertical multistage pumps. The individual / bulk-pack seal reference is 96441877, and the related Grundfos shaft seal kit reference is 96455086.

This is the HQQE version: a Type H balanced cartridge O-ring seal with silicon carbide / silicon carbide seal faces and EPDM elastomers. It should not be confused with the larger 16mm HQQE seal used on selected CR / CRI / CRN 10, 15 and 20 pumps.

This is a shaft seal service part only. It is not a complete pump, pump head, motor, chamber stack, base or hydraulic assembly.

Condition: supplied in as new surplus condition – the item has not been installed or used but may show minor cosmetic markings from storage and handling. Guarantee: supplied with a 2-year guarantee.

• Product type: mechanical shaft seal / shaft seal service part
• Individual / bulk-pack seal reference: 96441877
• Related replacement kit reference: 96455086
• Seal code: HQQE
• Nominal shaft / seal size: 12 mm
• Suitable pump families: CR / CRE / CRI / CRIE / CRN / CRNE 1, 3 and 5, subject to exact pump version
• Seal type: Type H balanced cartridge O-ring seal unit
• Seal face pairing: silicon carbide / silicon carbide
• Secondary seal material: EPDM
• Pressure / temperature capability: up to 30 bar and up to 140°C for suitable water duties, subject to pump model, shaft size, speed, pumped liquid and Grundfos application limits
• Important compatibility note: match the existing seal code, pump model, shaft/seal size and service documentation before ordering
• Stock code: #4939

Need help confirming suitability?
Call us on 01803 220416 for technical advice.

Manufacturer product page

The related Grundfos replacement kit reference can be viewed on the official Grundfos product page:
View Grundfos Kit, shaft seal HQQE – 96455086

This listing also references 96441877, which is associated with the individual / bulk-pack HQQE seal reference. Please use 96441877 and 96455086 as cross-references rather than assuming every package or kit configuration is identical.

Technical documentation

General Grundfos CR / CRI / CRN service documentation can be viewed here:
View Grundfos CR / CRI / CRN 1, 3 and 5 service documentation

Grundfos mechanical shaft seal reference guide:
View Grundfos mechanical shaft seals for pumps guide

Typical applications

• Replacement HQQE shaft seal for compatible Grundfos CR 1 / CR 3 / CR 5 pumps
• Replacement HQQE shaft seal for compatible Grundfos CRE 1 / CRE 3 / CRE 5 pumps
• Replacement HQQE shaft seal for compatible Grundfos CRI 1 / CRI 3 / CRI 5 pumps
• Replacement HQQE shaft seal for compatible Grundfos CRIE 1 / CRIE 3 / CRIE 5 pumps
• Replacement HQQE shaft seal for compatible Grundfos CRN 1 / CRN 1S / CRN 3 / CRN 5 pumps
• Replacement HQQE shaft seal for compatible Grundfos CRNE 1 / CRNE 3 / CRNE 5 pumps
• Service and maintenance of smaller Grundfos vertical multistage pump assemblies
• Clean water, treated water and compatible process-liquid duties where EPDM is suitable

Frequently Asked Questions

What is this part?

This is a Grundfos HQQE 12mm mechanical shaft seal for selected CR, CRE, CRI, CRIE, CRN and CRNE vertical multistage pumps. It is a service part only and does not include any pump body, motor, chamber stack or pipework components.

What does HQQE mean?

• H – Type H balanced cartridge O-ring seal unit
• Q – silicon carbide rotating seal face
• Q – silicon carbide stationary seal face
• E – EPDM secondary seal elastomers

In plain English, this is a balanced cartridge mechanical shaft seal with silicon carbide / silicon carbide seal faces and EPDM elastomers.

What is the difference between 96441877 and 96455086?

96441877 is associated with the individual / bulk-pack HQQE seal reference. 96455086 is the related Grundfos shaft seal kit reference commonly listed for CR, CRE, CRI, CRIE, CRN and CRNE 1, 3 and 5 pump families.

Is this the same as the 16mm HQQE seal for CR / CRI / CRN 10, 15 and 20?

No. This listing is for the 12mm HQQE seal family associated with selected CR / CRE / CRI / CRIE / CRN / CRNE 1, 3 and 5 pumps. The larger CR / CRI / CRN 10, 15 and 20 HQQE seal family uses different references such as 96511844 / 96484071.

What is the difference between HQQE and HQQV?

The final letter identifies the elastomer material. HQQE uses EPDM elastomers, while HQQV uses FKM / Viton elastomers. They should not be treated as automatically interchangeable.

Why use a Type H cartridge seal?

Type H is a balanced cartridge O-ring seal design. The cartridge construction makes replacement easier because the seal is supplied as an assembled unit, while the balanced design is intended for higher-pressure applications when correctly matched to the pump, liquid and duty.

What is the benefit of silicon carbide / silicon carbide seal faces?

Silicon carbide / silicon carbide is a hard-wearing seal face pairing used where good wear resistance is required. Grundfos describes this material pairing as having excellent abrasive resistance and good performance in hot water. The seal must still be correctly matched to the pump, liquid and duty.

What temperature and pressure is this seal suitable for?

This is an HQQE mechanical shaft seal with silicon carbide / silicon carbide seal faces and EPDM secondary seals. It is suitable for high-pressure water duties, with a maximum operating pressure of up to 30 bar and water temperature capability up to 140°C, subject to the exact pump model, shaft size, speed, pumped liquid and Grundfos application limits.

The final suitability must always be checked against the pump’s nameplate, fitted seal code and Grundfos service documentation. Temperature and pressure capability can be affected by the pump model, liquid type, seal chamber conditions, viscosity, additives and whether the seal has sufficient lubrication during operation.

What liquids is this suitable for?

Suitability depends on the pump materials, liquid temperature, pressure, concentration and chemical compatibility. EPDM is commonly used for water-based duties such as clean water, treated water and some heating or cooling applications.

EPDM is not normally selected for mineral oils, fuels, petroleum products or liquids that attack EPDM. For chemically treated water, glycol blends, high-temperature duties or process liquids, check seal compatibility before ordering.

Can this be used with glycol?

It may be suitable for some water-glycol duties, but the glycol type, concentration, inhibitor package, temperature and pressure should be checked. Glycol can increase viscosity, affect seal-face lubrication and alter pump performance.

Can a mechanical shaft seal run dry?

No. Mechanical shaft seals rely on a thin lubricating film between the seal faces. Running a pump dry, or without proper liquid at the seal faces, can quickly damage the seal.

Individual pump models found with 96455086 / 96441877 / HQQE

The list below is based on publicly indexed Grundfos Product Center pages, service-special pages, product datasheets and supplier spare-parts references where 96455086, 96441877 or HQQE appears against specific pump models. It should be treated as a reference list of models found, not a guaranteed complete Grundfos internal compatibility database.

Grundfos CR 1 models found

• CR 1-3 A-FGJ-A-E-HQQE – product no. 97906277
• CR 1-3 E-FGJ-A-E-HQQE – product no. 98527625
• CR 1-4 A-A-A-E-HQQE – product no. 92900965
• CR 1-5 A-A-A-E-HQQE – product no. 96516173
• CR 1-5 A-A-A-E-HQQE – product no. 96529473
• CR 1-6 A-A-A-E-HQQE – product no. 92900970
• CR 1-6 EU-FGJ-A-E-HQQE – product no. 97897964
• CR 1-7 E-FGJ-A-E-HQQE – product no. 98172527
• CR 1-8 A-A-A-E-HQQE – product no. 96529476
• CR 1-10 A-A-A-E-HQQE – product no. 93395445
• CR 1-10 A-FGJ-A-E-HQQE – product no. 96556537
• CR 1-12 E-FGJ-A-E-HQQE – product no. 98943232
• CR 1-27 B-FGJ-A-E-HQQE – product no. 92926443

Grundfos CR 3 models found

• CR 3-2 EU-FGJ-A-E-HQQE – product no. 97716799
• CR 3-3 A-A-A-E-HQQE – product no. 93391010
• CR 3-5 A-A-A-E-HQQE – product no. 96528683
• CR 3-7 A-A-A-E-HQQE – product no. 92901491
• CR 3-7 B-A-A-E-HQQE – product no. 96635305
• CR 3-11 A-A-A-E-HQQE – product no. 97641644
• CR 3-13 A-A-A-E-HQQE – product no. 92901498
• CR 3-13 K-FGJ-A-E-HQQE – product no. 92818324
• CR 3-19 A-FGJ-A-E-HQQE – product no. 93183521
• CR 3-21 A-FGJ-A-E-HQQE – product no. 99314553
• CR 3-27 A-FGJ-A-E-HQQE – product no. 96513348
• CR 3-27 A-FGJ-A-E-HQQE – product no. 98179500
• CR 3-29 K-FGJ-A-E-HQQE – product no. 99556691
• CR 3-36 A-FGJ-A-E-HQQE – product no. 98640034

Grundfos CR 5 models found

• CR 5-5 A-A-A-E-HQQE – product no. 96516978
• CR 5-11 A-FGJ-A-E-HQQE – product no. 96513382
• CR 5-29 A-FGJ-A-E-HQQE – product no. 93395736

Grundfos CRE models found

• CRE 1-4 A-A-A-E-HQQE – product no. 98389296
• CRE 1-4 N-FGJ-A-E-HQQE – product no. 98389315
• CRE 1-5 A-FGJ-A-E-HQQE – product no. 93146539
• CRE 1-6 P-A-A-E-HQQE – product no. 98727372
• CRE 1-6 NV-A-A-E-HQQE – product no. 99236580
• CRE 1-7 A-A-A-E-HQQE – product no. 98551761
• CRE 1-7 P-A-A-E-HQQE – product no. 98727375
• CRE 1-17 A-A-A-E-HQQE – product no. 98389302
• CRE 1-27 N-FGJ-A-E-HQQE – product no. 99072117
• CRE 3-3 A-A-A-E-HQQE – product no. 98443290
• CRE 3-4 BN-FGJ-A-E-HQQE – product no. 93150207
• CRE 3-4 N-FGJ-A-E-HQQE – product no. 98389722
• CRE 3-5 A-A-A-E-HQQE – product no. 98389696
• CRE 3-5 A-FGJ-A-E-HQQE – product no. 98389691
• CRE 3-5 V-A-A-E-HQQE – product no. 99307265
• CRE 3-5 V-FGJ-A-E-HQQE – product no. 99696577
• CRE 3-10 K-A-A-E-HQQE – product no. 99240848
• CRE 3-21 A-FGJ-A-E-HQQE – product no. 98727469
• CRE 3-23 NV-FGJ-A-E-HQQE – product no. 99236602
• CRE 5-5 N-A-A-E-HQQE – product no. 93146716
• CRE 5-5 K-FGJ-A-E-HQQE – product no. 99569661
• CRE 5-24 K-FGJ-A-E-HQQE – product no. 99203038

Grundfos CRI 1 models found

• CRI 1-3 EU-FGJ-A-E-HQQE – product no. 96861762
• CRI 1-10 A-CA-A-E-HQQE – product no. 96560114
• CRI 1-11 A-CA-A-E-HQQE – product no. 92901090
• CRI 1-12 A-CA-A-E-HQQE – product no. 93392127

Grundfos CRI 3 models found

• CRI 3-2 A-FGJ-A-E-HQQE – product no. 96529524
• CRI 3-2 A-P-T-E-HQQE – product no. 98910936
• CRI 3-2 EU-FGJ-A-E-HQQE – product no. 96965863
• CRI 3-5 A-CA-A-E-HQQE – product no. 96516723
• CRI 3-9 A-P-A-E-HQQE – product no. 96533124
• CRI 3-29 R-FGJ-A-E-HQQE – product no. 99444087
• CRI 3-31 A-P-A-E-HQQE – product no. 96532263

Grundfos CRI 5 models found

• CRI 5-6 A-FGJ-A-E-HQQE – product no. 99980885
• CRI 5-18 A-CA-I-E-HQQE – product no. 99440733
• CRI 5-20 A-FGJ-A-E-HQQE – product no. 96532869
• CRI 5-29 A-CA-A-E-HQQE – product no. 96517117
• CRI 5-29 FK-FGJ-A-E-HQQE – product no. 99337100

Grundfos CRIE models found

• CRIE 1S-7 V-CA-A-E-HQQE – product no. 93052499
• CRIE 1-6 A-FGJ-A-E-HQQE – product no. 93150416
• CRIE 1-6 B-FGJ-A-E-HQQE – product no. 93147372
• CRIE 1-6 N-CA-A-E-HQQE – product no. 98389382
• CRIE 1-10 NPV-FGJ-A-E-HQQE – product no. 99245442
• CRIE 3-2 A-CA-A-E-HQQE – product no. 98389726
• CRIE 3-2 N-CA-A-E-HQQE – product no. 98389798
• CRIE 3-4 A-P-A-E-HQQE – product no. 98389759
• CRIE 3-5 A-FGJ-A-E-HQQE – product no. 98389748
• CRIE 3-10 – product no. 96518358
• CRIE 5-5 A-CA-A-E-HQQE – product no. 93146844
• CRIE 5-6 A-CA-A-E-HQQE – product no. 93147229
• CRIE 5-9 A-CA-A-E-HQQE – product no. 98440715
• CRIE 5-9 N-P-A-E-HQQE – product no. 98390097
• CRIE 5-20 NV-FGJ-A-E-HQQE – product no. 99245669

Grundfos CRN 1 / CRN 1S models found

• CRN 1S-3 A-P-A-E-HQQE – product no. 96532147
• CRN 1S-9 A-FGJ-H-E-HQQE – product no. 96532075
• CRN 1S-36 A-P-A-E-HQQE – product no. 92900202
• CRN 1-5 A-P-A-E-HQQE – product no. 96533147
• CRN 1-19 A-CA-A-E-HQQE – product no. 96544274
• CRN 1-30 A-FGJ-A-E-HQQE – product no. 96557763

Grundfos CRN 3 models found

• CRN 3-6 A-FGJ-A-E-HQQE – product no. 96558263
• CRN 3-8 A-P-A-E-HQQE – product no. 96533255
• CRN 3-31 S-P-A-E-HQQE – product no. 96892938

Grundfos CRN 5 models found

• CRN 5-2 A-P-A-E-HQQE – product no. 96517239
• CRN 5-4 A-FGJ-G-E-HQQE – product no. 96085015
• CRN 5-6 A-FGJ-A-E-HQQE – product no. 96517185
• CRN 5-34 S-P-T-E-HQQE – product no. 96521769

Grundfos CRNE models found

• CRNE 1-6 N-FGJ-A-E-HQQE – product no. 98389586
• CRNE 1-17 NPV-P-A-E-HQQE – product no. 99458007
• CRNE 1-23 A-P-A-E-HQQE – product no. 96461687
• CRNE 1-23 A-P-A-E-HQQE – product no. 96464893
• CRNE 1-23 Q-P-T-E-HQQE – product no. 99050537
• CRNE 3-19 – product no. 96518400
• CRNE 3-23 NV-FGJ-A-E-HQQE – product no. 99072702
• CRNE 3-23 Q-FGJ-T-E-HQQE – product no. 99050572
• CRNE 3-23 Q-P-T-E-HQQE – product no. 99050564
• CRNE 3-25 S-P-A-E-HQQE – product no. 99051828
• CRNE 5-9 V-FGJ-A-E-HQQE – product no. 99437288
• CRNE 5-24 V-P-A-E-HQQE – product no. 99076021

This list is deliberately comprehensive and based on publicly found model evidence. It is not a guaranteed complete Grundfos internal compatibility database. Always confirm the existing pump model, fitted shaft seal code, shaft/seal size, pressure version and Grundfos service parts list before ordering.

About Our Stock

Stock code: #4939
We specialise in supplying new and unused surplus pump parts. This item is inspected prior to dispatch and supplied with a 2-year guarantee.