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Grundfos 38mm BQQE Mechanical Shaft Seal for NB NK TP Pumps 98434906 #5037

Name: Grundfos 38mm BQQE Mechanical Shaft Seal for NB NK TP Pumps 98434906 #5037
Brand: Grundfos
Price: 249.0 GBP
Availability: InStock

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£249.00GBP inc VAT

Technical overview

About these figures

These figures provide simplified information for searching, filtering and initial comparison. They are not a complete specification. Exact details depend on the model and configuration.

Power rating: Usually the motor’s rated mechanical output (P2). Electrical input power (P1) is a different value. Check the product’s nameplate or manufacturer’s documentation to confirm which rating applies.

Outlet size: The nominal size class is expressed on a millimetre basis: for example, DN40 denotes a nominal 40 mm size. It does not specify the exact measured opening, connection type, thread, flange drilling or pressure rating.

Head and flow: Indicative figures describing the pump’s performance envelope, rather than a single operating duty point. Do not assume maximum flow is available at maximum head, or that every combination within the ranges is achievable. Minimum figures do not establish safe continuous operating limits. Consult the relevant performance curve.

Check the product description, nameplate and manufacturer’s documentation before selection or installation. Please contact us before purchasing if you need help confirming suitability or connection details.

Shipping Weight	0.5 kg
Package Dimensions	20.0 × 20.0 × 10.0 cm

Grundfos 38mm BQQE Mechanical Shaft Seal Kit 98434906 for Selected NB, NK & TP Pumps #5037

The Grundfos 98434906 is a replacement mechanical shaft seal kit specified as BQQE D38, version GG. It is listed for selected Grundfos NB, NK and TP family pump configurations requiring this particular 38mm mechanical seal.

The BQQE specification combines a rubber bellows design, silicon carbide sealing faces and EPDM elastomers. Correctly matched to the pump and pumped liquid, the seal controls leakage where the rotating shaft passes through the pump housing.

Condition: Supplied as new and unused surplus stock. The kit has not been installed or used, although its packaging may show marks from storage and handling. Supplied with a 2-year guarantee from The Pump Dealer.

Product Details

Manufacturer: Grundfos
Product number: 98434906
Part type: Mechanical shaft seal kit
Seal specification: BQQE D38
Manufacturer's version designation: GG
Nominal shaft seal size: 38mm
Seal construction: Rubber bellows mechanical seal
Seal faces: Silicon carbide against silicon carbide
Elastomer material: EPDM
EAN: 5711494949014
Applications: Selected Grundfos NB, NK and TP family variants, including the exact product references listed below
Stock reference: #5037

Need help confirming compatibility?
Call 01803 220416 or send a clear photograph of your pump nameplate to kirk@thepumpdealer.co.uk before ordering.

Delivery & Shipping

Next working day dispatch available – order before 4pm
Same-day courier available – please call for a quote
UK and international delivery available
International shipping costs confirmed after checkout

Manufacturer Documentation

Grundfos identifies this part as 98434906, BQQE D38, version GG. The manufacturer's service literature and pump-specific spare-parts records should be used to confirm the correct seal for your complete pump configuration.

Compatibility Guidance

NB, NK or TP in the pump name does not by itself establish compatibility. These ranges contain different shaft sizes, seal arrangements and material variants.

The most reliable check is whether the spare-parts record for your exact pump specifies 98434906. Please provide the complete pump model, eight-digit product number and production code where available.

A researched list of 440 confirmed pump product references is included at the bottom of this description. Match the complete designation and product number rather than relying on the abbreviated pump name.

Frequently Asked Questions

What does BQQE mean?

BQQE identifies the seal construction and materials:

B: Rubber bellows mechanical seal
First Q: Silicon carbide rotating seal face
Second Q: Silicon carbide stationary seal face
E: EPDM secondary sealing components

The material code helps identify suitability for the liquid, but the seal dimensions and installation arrangement must also match the pump.

What does D38 mean?

D38 identifies the nominal 38mm shaft seal diameter. It does not refer to the pump's pipe connection size or the outside diameter of the complete seal assembly. Other 38mm seals can have different installed lengths, stationary seats or drive arrangements.

What does GG mean on this kit?

Grundfos Product Center records GG as the version designation for this part. Use it together with the complete BQQE D38 specification and product number 98434906 when matching a replacement.

Is 98434906 the same as 98434904?

No. 98434906 is the D38, 38mm kit, while 98434904 is the D28, 28mm kit. They share the BQQE material code but have different nominal seal diameters and are not interchangeable simply because both are listed for selected NB, NK and TP pumps.

How does a mechanical shaft seal work?

A rotating face turns with the shaft against a stationary face mounted in the pump. A very thin film of liquid between the faces provides lubrication, while the bellows and secondary seals prevent leakage around the other interfaces.

Correct installation, clean sealing surfaces and adequate liquid around the seal are essential for reliable operation.

Why use silicon carbide against silicon carbide?

Silicon carbide provides hard, wear-resistant sealing faces. This can be useful where fine particles would wear softer face materials more quickly. The faces still require suitable lubrication and can be damaged by dry running, impact, contamination or incorrect fitting.

Is EPDM suitable for heating water and glycol?

EPDM is commonly used for water and compatible water-glycol mixtures. Suitability depends on the glycol type, concentration, additives and operating temperature. Check the complete liquid formulation against the pump and seal specification.

EPDM is generally unsuitable for mineral oils and petroleum-based fuels.

Is BQQE interchangeable with BQQV?

The final letter identifies a different elastomer: E is EPDM, while V is FKM. These materials have different chemical and temperature characteristics. Any substitution must be assessed against the pumped liquid, operating conditions and complete seal arrangement.

Can this replace a BAQE, BBQE or another seal code?

A different code can indicate different face materials or construction. A substitution may be possible in a particular pump, but it should be checked against the manufacturer's spare-parts information and application requirements. Please contact us before ordering a different specification from the original.

Does this fit every Grundfos NB, NK or TP pump?

No. This kit is specified for selected configurations. Other versions use different diameters, materials or installation arrangements. Match the complete pump product number and the specified replacement part number.

What do the eight-digit numbers in the compatibility list identify?

The number at the end of each entry is the Grundfos product number of the pump. The replacement seal kit being sold here is 98434906. Similar or identical pump model descriptions can have different product numbers, so those references are listed separately.

Will replacing the shaft seal cure a leaking pump?

It may resolve leakage caused by a worn or damaged mechanical seal. Leakage can also originate from casing joints, O-rings or other components. Investigate the original cause: shaft damage, bearing wear, misalignment, contamination and unsuitable operating conditions can cause a replacement seal to fail again.

Can the pump run dry after fitting this seal?

Dry running should be avoided. The liquid lubricates and cools the seal faces. An empty pump or trapped air can cause rapid heating and damage. Fill and vent the pump according to its operating instructions before starting.

What is included?

This listing is for shaft seal kit 98434906. Please refer to the listing photographs for the supplied components. Casing gaskets, spacer rings, bearings, shafts and other service parts should be checked separately against the repair requirements.

Who should install the seal?

A competent pump engineer should fit the replacement using the service procedure for the exact pump model. This includes checking the shaft and seat condition, keeping the seal faces clean, using approved assembly materials and setting the correct assembly position.

About Our Stock

We specialise in supplying new and unused surplus pumps, motors and pump spares. This item is supplied with a 2-year guarantee from The Pump Dealer.

Stock reference: #5037
For help matching this kit to your pump, call 01803 220416.

Pump Compatibility – Grundfos Manufacturer References

We have searched Grundfos Product Center and checked the manufacturer's recommended spare-parts records. Shaft seal kit 98434906 is explicitly listed for each of the 440 pump product references below.

The list contains 436 full published pump designations, including their BQQE seal codes, followed by the eight-digit Grundfos pump product number. Four additional NBS service-special references without published full model designations are listed separately at the end.

Please check your pump nameplate: Match the complete model designation and product number. A matching family name, nominal size or BQQE code alone does not establish compatibility. This list contains confirmed matches identified in our search; additional compatible product numbers may exist.

Grundfos TP

TP 65-345/2 A-F-R-BQQE-MW1 — 93280220
TP 65-445/2 A-F-R-BQQE-NW1 — 93280219
TP 65-615/2 A-F-R-BQQE-PW1 — 93348731
TP 65-635/2 A-F-R-BQQE-QW1 — 93348742
TP 65-775/2 A-F-R-BQQE-RW1 — 93326261
TP 65-945/2 A-F-A-BQQE-SW1 — 93471169
TP 65-945/2 A-F-A-BQQE-SW1 — 93471235
TP 65-945/2 A-F-R-BQQE-SW1 — 93326260
TP 80-240/4 A-F-A-BQQE-LW3 — 99123788
TP 80-240/4 A-F-B-BQQE-LW3 — 96108638
TP 80-240/4 A-F-B-BQQE-LW3 — 99123790
TP 80-240/4 A-F-S-BQQE-LW3 — 93454443
TP 80-240/4 A-F-S-BQQE-LW3 — 99966912
TP 80-240/4 A-J-A-BQQE-LW3 — 92566859
TP 80-240/4 B-F-A-BQQE-MW3 — 93094430
TP 80-265/4 A-F-R-BQQE-LW3 — 93173907
TP 80-270/4 A-F-A-BQQE-MW3 — 92648066
TP 80-280/4 A-F-A-BQQE-MW4 — 99595720
TP 100-130/4 B-F-A-BQQE-LW3 — 92564888
TP 100-170/4 A-F-A-BQQE-LW3 — 93426517
TP 100-170/4 A-F-A-BQQE-LW3 — 98750714
TP 100-170/4 A-F-A-BQQE-LW3 — 99914245
TP 100-170/4 A-F-A-BQQE-LW4 — 96111080
TP 100-170/4 A-F-B-BQQE-LW4 — 96111110
TP 100-170/4 AE-F-A-BQQE-LW3 — 92575260
TP 100-170/4 AE-F-A-BQQE-LW3 — 99799200
TP 100-250/4 A-F-A-BQQE-NW3 — 93349673
TP 100-250/4 A-F-B-BQQE-NW3 — 96109344
TP 100-250/4 A-F-S-BQQE-NW3 — 99057683
TP 100-250/4 A-F-S-BQQE-NW3 — 99205750
TP 100-250/4 B-F-B-BQQE-OW3 — 99944034
TP 100-285/4 A-F-R-BQQE-OW3 — 93348805
TP 100-330/4 B-F-A-BQQE-PW3 — 99775685
TP 100-365/4 A-F-R-BQQE-QW3 — 93280275
TP 100-375/4 A-F-R-BQQE-QW3 — 93280288
TP 100-410/4 AE-F-B-BQQE-QW3 — 92619329
TP 100-480/2 A-F-A-BQQE-RW1 — 96108944
TP 100-700/2 A-F-A-BQQE-TW2 — 96110924
TP 125-70/6 A-F-A-BQQE-IW5 — 96109729
TP 125-110/4 A-F-A-BQQE-KW3 — 99366098
TP 125-130/4 A-F-A-BQQE-LW3 — 93426522
TP 125-130/4 A-F-A-BQQE-LW3 — 96109540
TP 125-130/4 A-F-A-BQQE-LW3 — 99123866
TP 125-130/4 A-J-S-BQQE-LW3 — 99069033
TP 125-160/4 A-F-A-BQQE-MW3 — 96109429
TP 125-160/4 A-F-B-BQQE-MW3 — 96109461
TP 125-230/4 A-F-A-BQQE-OW3 — 98743685
TP 125-230/4 A-F-A-BQQE-OX3 — 99599167
TP 125-230/4 A-J-A-BQQE-OW3 — 98840425
TP 125-320/4 A-J-A-BQQE — 98993940
TP 125-340/4 A-F-B-BQQE-QW3 — 98742566
TP 125-340/4 A-F-S-BQQE-QW3 — 93125541
TP 125-400/4 A-F-A-BQQE-RW3 — 99889494
TP 150-70/4 A-F-A-BQQE-LW3 — 93538694
TP 150-70/4 A-F-A-BQQE-LW3 — 98908308
TP 150-90/6 A-F-A-BQQE-KW5 — 93356664
TP 150-110/6 AE-F-A-BQQE-LW5 — 99758427
TP 150-130/4 A-F-B-BQQE-MW3 — 96109889
TP 150-130/4 A-F-B-BQQE-MW3 — 99410313
TP 150-155/4 A-F-A-BQQE-NW3 — 99820526
TP 150-155/4 A-F-A-BQQE-NW3 — 99964355
TP 150-155/4 AE-F-A-BQQE-NW3 — 93513496
TP 150-170/4 A-F-A-BQQE-OW3 — 99551302
TP 150-220/4 A-F-A-BQQE-PW3 — 92571458
TP 150-220/4 A-F-S-BQQE-PW3 — 99508906
TP 150-220/4 AE-F-A-BQQE-PW3 — 92770105
TP 150-250/4 A-F-A-BQQE-QW3 — 93349682
TP 150-250/4 A-F-S-BQQE-QW3 — 92686252
TP 150-250/4 A-F-S-BQQE-QW3 — 99817576
TP 150-250/4 AE-F-A-BQQE-QW3 — 99596259
TP 200-50/4 A-F-B-BQQE-KW3 — 97927010
TP 200-50/4 A-F-S-BQQE-KX3 — 99406585
TP 200-70/4 A-F-A-BQQE-LW3 — 97926994
TP 200-90/4 A-F-B-BQQE-MW3 — 97927172
TP 200-130/4 A-F-A-BQQE-NW3 — 93349716
TP 200-150/4 A-F-A-BQQE-OW3 — 93426552
TP 200-150/4 A-F-A-BQQE-OW3 — 99124008
TP 200-150/4 A-F-S-BQQE-OW3 — 99804746

Grundfos TPE

TPE 80-230/4 A-F-B-BQQE-LWA — 99113869
TPE 80-240/4 S-A-F-S-BQQE-LWA — 92631717
TPE 80-270/4 A-F-A-BQQE-MWA — 99113701
TPE 80-270/4 A-F-B-BQQE-MWA — 99113747
TPE 80-270/4 S-AE-F-A-BQQE-MWA — 92504337
TPE 80-340/4 A-F-A-BQQE-NW3 — 96110190
TPE 80-340/4 A-F-B-BQQE-NWA — 92952056
TPE 100-130/4 A-F-A-BQQE-KWA — 93149585
TPE 100-130/4 A-F-A-BQQE-KWA — 99113705
TPE 100-130/4 S-A-F-A-BQQE-KWA — 99114811
TPE 100-170/4 A-F-A-BQQE-LWA — 93149586
TPE 100-170/4 S-A-F-A-BQQE-LWA — 99114812
TPE 100-200/4 S-A-F-A-BQQE-MWA — 99114808
TPE 100-250/4 A-F-A-BQQE-NWA — 93110303
TPE 100-370/4 AE-F-A-BQQE-PWA — 93029726
TPE 100-370/4 NC-A-F-A-BQQE-PW3 — 92600361
TPE 100-370/4 NC-A-F-A-BQQE-PW3 — 92600490
TPE 100-370/4 S-A-F-A-BQQE-PX3 — 96276058
TPE 100-370/4 SC-A-F-A-BQQE-PW3 — 92600457
TPE 100-370/4 SC-A-F-A-BQQE-PW3 — 92600554
TPE 100-410/4 A-F-A-BQQE-QWA — 93110306
TPE 100-410/4 A-F-B-BQQE-QWA — 92952616
TPE 100-410/4 NC-A-F-A-BQQE-QW3 — 99473964
TPE 100-410/4 SC-A-F-A-BQQE-QW3 — 99474543
TPE 100-480/2 NC-A-F-A-BQQE-RW1 — 92843556
TPE 100-480/2 SC-A-F-A-BQQE-RW1 — 92843818
TPE 125-110/4 A-F-A-BQQE-KWA — 93149595
TPE 125-130/4 S-A-F-A-BQQE-LWA — 93149667
TPE 125-160/4 A-F-S-BQQE-MWA — 93404018
TPE 125-190/4 A-F-B-BQQE-NWA — 92952263
TPE 125-300/4 NC-A-F-B-BQQE-PW3 — 92600367
TPE 125-300/4 S-A-F-B-BQQE-PX3 — 99583114
TPE 125-300/4 SC-A-F-A-BQQE-PW3 — 92600556
TPE 125-340/4 NC-A-F-B-BQQE-QW3 — 99474053
TPE 125-340/4 NC-A-F-B-BQQE-QW3 — 99474344
TPE 125-340/4 SC-A-F-A-BQQE-QW3 — 99474588
TPE 125-400/4 NC-A-F-A-BQQE-RW3 — 92843559
TPE 125-400/4 NC-A-F-B-BQQE-RW3 — 92843633
TPE 125-480/4 SC-A-F-A-BQQE-SW4 — 93643112
TPE 150-70/4 S-A-F-A-BQQE-LWA — 99114732
TPE 150-70/4 S-A-F-S-BQQE-LWA — 99288857
TPE 150-110/4 A-F-A-BQQE — 98908293
TPE 150-130/4 A-F-A-BQQE-MWA — 93149605
TPE 150-200/4 A-F-A-BQQE-PWA — 93097315
TPE 150-220/4 NC-A-F-A-BQQE-PW3 — 92600506
TPE 150-220/4 NC-A-F-B-BQQE-PW3 — 92600388
TPE 150-220/4 SC-A-F-A-BQQE-PW3 — 92600484
TPE 150-250/4 A-F-A-BQQE-QWA — 93110326
TPE 150-250/4 NC-A-F-B-BQQE-QW3 — 99474366
TPE 150-250/4 S-A-F-A-BQQE-QWA — 93110362
TPE 200-50/4 A-F-A-BQQE-KWA — 93149607
TPE 200-50/4 A-F-A-BQQE-KWA — 99113660
TPE 200-70/4 A-F-A-BQQE-LWA — 99113661
TPE 200-70/4 S-A-F-A-BQQE-LWA — 93149687
TPE 200-90/4 A-F-A-BQQE-MWA — 99113662
TPE 200-90/4 S-A-F-A-BQQE-MWA — 99114835
TPE 200-130/4 A-F-B-BQQE-NWA — 92952970
TPE 200-140/4 A-F-B-BQQE-OWA — 92953026
TPE 200-150/4 A-F-A-BQQE-OWA — 93110332

Grundfos TPE2

TPE2 150-250 N-A-F-A-BQQE-QWA — 93338937
TPE2 150-250 N-A-F-S-BQQE-QWA — 93338941
TPE2 200-70 N-A-F-A-BQQE-LWA — 93338984
TPE2 200-90 N-A-F-S-BQQE-MWA — 93338990
TPE2 200-130 N-A-F-S-BQQE-NWA — 93338958
TPE2 200-150 N-A-F-S-BQQE-OWA — 93338962

Grundfos TPE3

TPE3 150-250 S-A-F-A-BQQE-QWA — 93338935
TPE3 150-250 S-A-F-S-BQQE-QWA — 93338939
TPE3 200-50 S-A-F-A-BQQE-KWA — 93338979
TPE3 200-70 S-A-F-A-BQQE-LWA — 93338983
TPE3 200-130 S-A-F-A-BQQE-NWA — 93338955
TPE3 200-150 S-A-F-S-BQQE-OWA — 93338961
TPE3 D 150-250 S-A-F-A-BQQE-QWA — 93339315

Grundfos TPD

TPD 80-240/4 A-F-A-BQQE-LW3 — 96108894
TPD 80-240/4 A-F-B-BQQE-LW3 — 96108694
TPD 80-240/4 A-F-B-BQQE-LW3 — 96108918
TPD 80-270/4 A-F-B-BQQE-MW3 — 96108919
TPD 80-280/4 A-F-B-BQQE-MW4 — 96111376
TPD 80-340/4 A-F-A-BQQE-NW3 — 93426310
TPD 80-340/4 A-F-A-BQQE-NW3 — 96108664
TPD 80-340/4 A-F-B-BQQE-NW3 — 96108696
TPD 80-340/4 A-F-B-BQQE-NW3 — 96108920
TPD 80-460/4 A-F-A-BQQE-PW4 — 96111460
TPD 100-130/4 A-F-A-BQQE-KW3 — 96109368
TPD 100-130/4 A-F-B-BQQE-KW3 — 96109404
TPD 100-170/4 A-F-A-BQQE-LW3 — 96109369
TPD 100-170/4 A-F-B-BQQE-LW3 — 96109167
TPD 100-200/4 A-F-B-BQQE-MW3 — 96109168
TPD 100-240/4 A-F-A-BQQE-NW4 — 96111562
TPD 100-250/4 A-F-A-BQQE-NW3 — 93425951
TPD 100-250/4 A-F-B-BQQE-NW3 — 96109169
TPD 100-250/4 A-F-B-BQQE-NW3 — 96109407
TPD 100-330/4 A-F-B-BQQE-OW3 — 96109408
TPD 100-370/4 A-F-B-BQQE-PW3 — 96109171
TPD 100-410/4 A-F-A-BQQE-QW3 — 96109374
TPD 100-410/4 A-F-B-BQQE-QW3 — 96109172
TPD 125-60/6 A-F-A-BQQE-HW5 — 96109689
TPD 125-70/6 A-F-A-BQQE-IW5 — 96109690
TPD 125-70/6 A-F-A-BQQE-IW5 — 96109764
TPD 125-80/6 A-F-B-BQQE-JW5 — 98743814
TPD 125-100/6 A-F-A-BQQE-KW5 — 98743781
TPD 125-110/4 A-F-A-BQQE-KW3 — 93426645
TPD 125-130/4 A-F-A-BQQE-LW3 — 96109596
TPD 125-130/4 A-F-B-BQQE-LW3 — 96109628
TPD 125-160/4 A-F-A-BQQE-MW3 — 96109485
TPD 125-190/4 A-F-A-BQQE-NW3 — 98858683
TPD 125-300/4 A-F-B-BQQE-PW3 — 98742605
TPD 125-330/4 A-F-B-BQQE — 98742767
TPD 125-340/4 A-F-A-BQQE-QW3 — 93426620
TPD 125-400/4 A-F-A-BQQE-RW3 — 98858621
TPD 125-480/4 A-F-A-BQQE-SW4 — 98742689
TPD 150-70/6 A-F-A-BQQE-JW5 — 96109966
TPD 150-70/6 A-F-A-BQQE-JW5 — 96110022
TPD 150-70/6 A-F-B-BQQE-JW5 — 96110038
TPD 150-90/6 A-F-A-BQQE-KW5 — 93711657
TPD 150-160/4 A-F-B-BQQE-NW3 — 96109925
TPD 150-180/4 A-F-A-BQQE-OW4 — 96111812
TPD 150-200/4 A-F-A-BQQE-OW3 — 93426812
TPD 150-220/4 A-F-A-BQQE-PW3 — 96109837
TPD 150-250/4 A-F-A-BQQE-QW3 — 93426622
TPD 150-340/4 A-F-B-BQQE-SW4 — 99336551

Grundfos TPED

TPED 80-240/4 A-F-B-BQQE-LWA — 99114794
TPED 80-240/4 S-A-F-A-BQQE-LWA — 99132856
TPED 80-270/4 A-F-A-BQQE-MWA — 99114629
TPED 80-270/4 S-A-F-A-BQQE-MWA — 99132857
TPED 80-340/4 A-F-A-BQQE-NWA — 92958042
TPED 100-130/4 A-F-B-BQQE-KWA — 99114799
TPED 100-170/4 A-F-B-BQQE-LWA — 99114800
TPED 100-200/4 A-F-A-BQQE — 96899013
TPED 100-200/4 A-F-A-BQQE-MWA — 99114635
TPED 100-200/4 AE-F-A-BQQE-MWA — 92820285
TPED 100-200/4 S-A-F-A-BQQE-MWA — 99132863
TPED 100-330/4 A-F-A-BQQE-OWA — 92958955
TPED 100-330/4 S-A-F-A-BQQE-OWA — 92958959
TPED 125-110/4 A-F-A-BQQE-KWA — 99114636
TPED 125-110/4 A-F-B-BQQE-KWA — 99114802
TPED 125-130/4 A-F-A-BQQE-LWA — 99114637
TPED 125-130/4 A-F-B-BQQE-LWA — 99114803
TPED 125-160/4 A-F-A-BQQE-MWA — 99114638
TPED 125-160/4 A-F-B-BQQE-MWA — 99114804
TPED 125-230/4 A-F-A-BQQE-OWA — 92959000
TPED 125-230/4 A-F-B-BQQE-OWA — 92959003
TPED 125-300/4 A-F-B-BQQE-PWA — 92959086
TPED 150-130/4 A-F-B-BQQE-MWA — 99114805
TPED 150-160/4 A-F-A-BQQE-NWA — 92959011
TPED 150-160/4 A-F-B-BQQE-NWA — 92959015
TPED 150-160/4 S-A-F-A-BQQE-NWA — 92959019
TPED 150-200/4 A-F-B-BQQE-OWA — 92959037
TPED 150-220/4 A-F-A-BQQE-PX3 — 96110663
TPED 150-250/4 A-F-B-BQQE-QWA — 92959219
TPED 150-250/4 S-A-F-A-BQQE-QWA — 92959224

Grundfos NB

NB 40-315/273 AAF2NESBQQEQW1 — 98937530
NB 40-315/273 AASF2AESBQQEQW1 — 98976264
NB 40-315/283 AAF2AESBQQEJW3 — 98979003
NB 40-315/298 AAF2NESBQQERW1 — 98567289
NB 40-315/305 AAEF2AESBQQEKW3 — 92912795
NB 40-315/305 AAF2AESBQQEKW3 — 98503608
NB 40-315/318 AASF2AESBQQESW1 — 93424836
NB 40-315/334 AAF2AESBQQELW3 — 99535606
NB 40-315/334 AAF2KESBQQELW3 — 98094197
NB 40-315/344 AAF2SESBQQELW3 — 92500809
NB 50-315/267 AASF2BESBQQERW1 — 93424951
NB 50-315/277 AF2KBQQE — 98308711
NB 50-315/300 AAF2AESBQQETW1 — 99535976
NB 50-315/344 AF2KBQQE — 98308715
NB 50-315/344 ASF2KBQQE — 98309398
NB 65-250/223 AHASF2AESBQQERW1 — 92538348
NB 65-250/226 AAF2AESBQQELW3 — 99536101
NB 65-250/251 AAF2AESBQQELW3 — 93094385
NB 65-250/255 AIXEF2KESBQQETW1 — 99194290
NB 65-250/269 AAF2AESBQQEUW1 — 98845446
NB 65-250/269 AIAF2KESBQQEUW1 — 99657225
NB 65-250/270 ABF2AESBQQENW3 — 99864246
NB 65-315/277 AASF2KESBQQEUW1 — 99982591
NB 65-315/314 AAF2AESBQQENW3 — 98073808
NB 65-315/320 AF2BBQQE — 97644000
NB 80-200/188 AF2BBQQE — 99272494
NB 80-200/193 AAF2BESBQQEKW3 — 99179172
NB 80-200/205 AAF2AESBQQESW1 — 99300122
NB 80-200/211 AAF2NESBQQETW1 — 98253236
NB 80-200/214 BF2BBQQE — 97669482
NB 80-200/222 ACF2AESBQQEXW3 — 99010670
NB 80-200/222 AIAF2AESBQQEUW1 — 93114803
NB 80-250/226 AIAF2AESBQQETW1 — 99501584
NB 80-250/261 AAF2BESBQQENW3 — 93329591
NB 80-250/270 AF2ABQQE — 98994932
NB 80-315/334 AASF2AESBQQESW4 — 93442585
NB 100-200/192 AAEF2AESBQQETW1 — 93553237
NB 100-200/195 AF2BBQQE — 98555683
NB 100-200/195 AF2NBQQE — 98606093
NB 100-250/226 BAF2SESBQQENW3 — 93293144
NB 100-250/229 BCF2AESBQQEXW1 — 93016743
NB 100-250/253 XEF2KBQQE — 99191637
NB 100-250/274 BHAF2AESBQQEOW3 — 99857297
NB 100-250/274 EUP AF2KBQQE — 98758108
NB 100-315/312 AASF2AESBQQEQW3 — 93015577
NB 100-315/334 AASF2AESBQQERW3 — 93137075
NB 125-200/196-166 EUP ASF2BBQQE — 98816517
NB 125-200/196-170 BAF1AESBQQEIW5 — 99406956
NB 125-200/205 BAF2AESBQQEVW1 — 99536356
NB 125-200/205 BASF2AESBQQEVW1 — 98860774
NB 125-200/219 BAF2KESBQQENW3 — 99260440
NB 125-200/219 BASF2AESBQQENW3 — 99831230
NB 125-250/220 AASF2BESBQQENW3 — 98760490
NB 125-250/236 AF2BBQQE — 96529919
NB 125-250/249 AF2BBQQE — 96631253
NB 125-250/262 AHAF2AESBQQEQW3 — 99944130
NB 150-200/210-154 AAF1AESBQQEMW3 — 99295756
NB 150-200/210-154 AAF1BESBQQEMW3 — 99812593
NB 150-200/210-154 AAF1NESBQQEMW3 — 98938940
NB 150-200/210-170 AAF1AESBQQEKW6 — 98975328
NB 150-200/215-175 AAF1AESBQQENW3 — 93031734
NB 150-200/216-176 AAF1BESBQQEVW1 — 93410650
NB 150-200/216-176 AIAF1AESBQQEVW1 — 99575557
NB 150-200/218-202 AIAF1KESBQQEWW1 — 99489490
NB 150-200/224 AAF1JESBQQE1W1 — 98735912
NB 150-200/224 AAF1SESBQQEOW3 — 97987201

Grundfos NBE

NBE 65-250/254 AAF2BESBQQELWA — 99258079
NBE 65-250/270 AIASF2AESBQQESW1 — 93542935
NBE 65-315/261 AAF2AESBQQELWA — 99101972
NBE 80-200/204 AAF2AESBQQEKWA — 99259838
NBE 100-250/274 BXEF2KESBQQEOWA — 99299465
NBE 100-315/279 AF2SBQQE — 98829584
NBE 125-200/226 BAF2AESBQQENWA — 99134613

Grundfos NBG

NBG 50-32-250/244 AF2NBQQE — 98813007
NBG 50-32-250/257 AF2BBQQE — 97661804
NBG 50-32-250/262 AF2BBQQE — 98141454
NBG 80-50-315/321 AASF2AESBQQEUW1 — 93417929
NBG 100-65-200/177 AE2DBQQE — 96883175
NBG 100-65-200/183 VAASF2CESBQQENW1 — 92811563
NBG 125-80-160/161 AE2SBQQE — 97511967
NBG 125-80-160/177 AAF2AESBQQERW1 — 93350780
NBG 125-80-200/200 AF2NBQQE — 98713717
NBG 125-80-250/255 AASG2KESBQQEOW4 — 98980272
NBG 125-100-200/211 AAF2NESBQQEMW3 — 98841601
NBG 150-125-200/196 BAE2CESBQQENW3 — 93015351
NBG 150-125-200/200 BAF2AESBQQEVW1 — 99275490

Grundfos NBGE

NBGE 80-50-250/254 AIAF2KESBQQERW1 — 92943444
NBGE 100-65-200/170 AAF2KESBQQEHWA — 99101515
NBGE 100-65-200/217 AAF2KESBQQERW1 — 93033716
NBGE 100-80-160/149 AAE2DESBQQEGWA — 98732944
NBGE 125-100-160/158 VBAF2KESBQQEMWB — 92822495

Grundfos NBS

NBS 015-090/7.80 AASG6SMESBQQEOX2 — 92559382
NBS 025-110/8.43 AASG6SMESBQQEHY6 — 92560115
NBS 030-110/9.76-9.45 AASG6SMESBQQENX4 — 93434020
NBS 030-110/1094-1063 AGASG6SMESBQQEOX4 — 93487809
NBS 040-070/6.77 AASG6SPESBQQESX2 — 92559291
NBS 040-095/6.46 AASG6SMESBQQETX2 — 92560326
NBS 050-070/6.06 AGASG6SPESBQQERX2 — 92899625

Grundfos NBSE

NBSE 015-095/9.53 AASG6SMESBQQESEE — 93307293
NBSE 025-110/8.58 ASASG6SMESBQQELED — 93307526
NBSE 030-095/6.10 AASG6SMESBQQERBE — 93306825
NBSE 030-110/1094-1063 AASG6SMESBQQENCA — 93184875
NBSE 040-070/5.67 AASG6SMESBQQEQBE — 93306845
NBSE 040-110/10.08 AASG6SMESBQQEPCA — 93184880
NBSE 040-135/12.64 AASG6SMESBQQESBD — 93306865
NBSE 050-070/6.42 AASG6SPESBQQESBE — 93306870
NBSE 050-070/6.93 AASG6SPESBQQEUEE — 93307409

Grundfos NK

NK 40-315/273 AA1F2KESBQQEQW1 — 98294810
NK 40-315/273 AA2F2AESBQQEQW1 — 98972743
NK 40-315/283 AA1F2AESBQQEJW3 — 98970589
NK 40-315/318 AA2F2BESBQQESW1 — 93407886
NK 40-315/318 AAEF2KESBQQESW1 — 92855080
NK 40-315/334 A1F2AE-SBQQE — 98970595
NK 40-315/334 AA1F2BESBQQELW3 — 93407345
NK 40-315/336 AA1F2AESBQQETW1 — 98970383
NK 40-315/336 AA1F2KESBQQETW1 — 98947090
NK 50-220/210 AA1F2S3ESBQQEPW1 — 93581216
NK 50-225/171 AA1F1S3ESBQQENW1 — 93061875
NK 50-225/179 AA1F1S3ESBQQENW1 — 93070345
NK 50-225/198 AAEF1S3ESBQQEOW1 — 93594548
NK 50-225/240 AA1F2S3ESBQQERW1 — 93052585
NK 50-280/224 AA1F2S3ESBQQERW1 — 93221034
NK 50-315/269 AA2F2SESBQQERW1 — 92504295
NK 50-315/299 Y1F2AE-SBQQE — 98718718
NK 50-350/301 AA1F1S3ESBQQELW3 — 93310502
NK 65-225/156 AA1F1S3ESBQQEOW1 — 93368853
NK 65-225/162 AA1F1S3ESBQQEOW1 — 93199009
NK 65-225/199 AA1F1S3ESBQQEQW1 — 93194998
NK 65-225/200 AA1F2S3ESBQQEQW1 — 93056663
NK 65-250/226 AY1F2BESBQQEXW1 — 99311669
NK 65-250/240 Y1F2BE-SBQQE — 98888233
NK 65-280/262 AA1F1S3ESBQQELW3 — 93108705
NK 65-315/307 AY1F2BESBQQEXW1 — 99945389
NK 65-315/314 A2F2BE-SBQQE — 99001797
NK 65-315/314 Y1F2AE-SBQQE — 98872234
NK 65-315/320 AA2F2BESBQQE1W1 — 99282585
NK 80-200/203 AY1F2KESBQQEXW1 — 93570677
NK 80-200/211 AA1F2NESBQQETW1 — 98939249
NK 80-200/222 AIA2F2AESBQQETW1 — 92580761
NK 80-200/222 Y1F2AE-SBQQE — 97947333
NK 80-250/234 AXEF2AESBQQEUW1 — 93404917
NK 80-250/234 AY1F2BESBQQEXW1 — 99605164
NK 80-250/270 Y1F2IE-SBQQE — 98687402
NK 80-280/269-261 AA1F2S3ESBQQEMW3 — 93143409
NK 80-280/278-270 AY1F2S3ESBQQEXW3 — 93364081
NK 80-350/296 AA1F1S3ESBQQEOW3 — 93355626
NK 100-200/203 AA1F2AESBQQEUW1 — 98970504
NK 100-200/207 AY1F2AESBQQEXW3 — 99621974
NK 100-225.1/180 AA1F1S3ESBQQESW1 — 93292080
NK 100-225/180 AA1F2S3ESBQQESW1 — 93328811
NK 100-225/238 AY1F2S3ESBQQEXW1 — 93426756
NK 100-250/244 EUP A2F2SE-SBQQE — 98897141
NK 100-280/244 AA1F2S3ESBQQENW3 — 93566646
NK 100-280/247 AA1F2S3ESBQQEOW3 — 93189556
NK 100-315/327 AY1F2AESBQQEXW3 — 92795248
NK 100-350/285 AA1F2S3ESBQQEOW3 — 93491837
NK 100-350/307 AA1F2S3ESBQQEQW3 — 93118172
NK 100-350/318 AA1F2S3ESBQQEQW3 — 93241561
NK 125-225/188 AA1F1S4ESBQQEMW3 — 93256014
NK 125-225/220 AA1F1S3ESBQQENW3 — 93282618
NK 125-250/244 AEF2AE-SBQQE — 98650779
NK 125-250/262 AA2F2BESBQQEQW3 — 98878256
NK 125-280/255 AA1F1S3ESBQQEPW3 — 93103823
NK 125-280/259 AA1F1S3ESBQQEOW3 — 93049367
NK 125-280/270 AY1F2S3ESBQQEXW3 — 93544318
NK 125-320/271 AA1F1S4ESBQQEQW3 — 93334961
NK 125-320/271 AY1F2S3ESBQQEXW3 — 93544330
NK 125-320/288 AA1F2S3ESBQQERW3 — 93633395
NK 150-200/210-154 AA1F1KESBQQEMW3 — 93251992
NK 150-200/210-158 A1F1AE-SBQQE — 98970503
NK 150-200/210-158 A2F2KE-SBQQE — 98324906
NK 150-200/210-158 AA2F2KESBQQEMW3 — 98740105
NK 150-200/216-176 AA1F2NESBQQEVW1 — 98824707
NK 150-200/222 AA2F1AESBQQEQW4 — 92605535
NK 150-200/224 AY1F1AESBQQEXW1 — 99309995
NK 150-225/238 AA1F2BAESBQQEOW3 — 93573700
NK 150-225/242 AY1F2SBESBQQEXW3 — 93544336

Grundfos NKE

NKE 040-110/9.92 ASA1G6S3ESBQQEQED — 93307159
NKE 40-315/305 ASA1F2AESBQQEKWA — 99539529
NKE 80-315/334 AHA2F2AESBQQEPW3 — 92543245
NKE 125-225/232 ASA1F1S3ESBQQEPWA — 93121554
NKE 150-225/202 AA1F2SBESBQQEMWA — 93183275

Grundfos NKG

NKG 50-32-250/203 AA1F2KESBQQEMW1 — 99860083
NKG 50-32-250/244 AW1F2SESBQQEXW1 — 99300239
NKG 50-32-250/262 AA2F2NESBQQEIW3 — 99312696
NKG 50-32-250/262 AY1F2SESBQQEXW1 — 99878523
NKG 80-50-250/254 AA1F2KESBQQERW1 — 98291871
NKG 100-65-200/217 A1F2BE-SBQQE — 98653645
NKG 100-65-200/219 AW1E2CESBQQEXW3 — 98755546
NKG 100-65-200/219 AY1F2SESBQQEXW1 — 98369773
NKG 100-65-250/240 Y1E2AE-SBQQE — 98990269
NKG 100-65-250/254 AY1E2AESBQQEXW3 — 97669069
NKG 100-65-250/269 AY1F2KESBQQEXW1 — 92502612
NKG 125-80-160/151 AA1F2AESBQQEOW1 — 93406300
NKG 125-80-200/219 A1F2BE-SBQQE — 98817074
NKG 125-100-160/167 BY1F2KESBQQEXW1 — 98755844
NKG 125-100-200/183 VAA1F2KESBQQEHW3 — 92896539

Grundfos NKGE

NKGE 50-32-250/236 AA2F2KESBQQEGWA — 98112194
NKGE 50-32-250/244 AA1F2KESBQQENWB — 99099036
NKGE 65-40-250/260 AA1F2AESBQQERW1 — 93035966
NKGE 100-80-160/158 VAA1F2AESBQQEFWA — 92897030
NKGE 100-80-160/158 VAA2F2AESBQQELWB — 92896914
NKGE 125-80-200/188 AA1F2KESBQQERW1 — 93036892
NKGE 125-80-250/220 AA1F2AESBQQETW1 — 93036362
NKGE 125-80-250/225 AA1F2KESBQQELWA — 99099240
NKGE 125-80-250/270 AA1F2AESBQQEWW1 — 93035961
NKGE 125-100-160/171 VBA1F2KESBQQEOWB — 92895273
NKGE 150-125-200/176-154 BA2F2KESBQQETW1 — 93037305

Additional Grundfos NBS Service-Special References

The following four Grundfos product records also explicitly list shaft seal kit 98434906. Their published records identify them as NBS service specials without providing a full model designation.

NBS service special — 93438128
NBS service special — 93456429
NBS service special — 93590635
NBS service special — 93650634

Compatibility reference: Grundfos Product Center product descriptions and recommended spare-parts records, checked on 20 October 2026. Manufacturer reference for shaft seal kit 98434906. The eight-digit numbers at the end of the entries identify the pumps; the replacement seal kit number is 98434906.

Specification & guidance notice: Technical information and FAQ content are provided in good faith based on manufacturer literature and industry experience. Descriptions of hydraulic types and application suitability represent general guidance only and do not constitute a guarantee of performance. Actual results will depend on system design, pipework losses, media characteristics, and installation conditions. Please consult the manufacturer & thier documentation and satisfy yourself that the equipment is suitable for your specific application prior to purchase.