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Grundfos Mechanical Seals

  • Technotrans ML100DA mechanical seal

    Grundfos / Technotrans ML100DA Mechanical Seal — Fits ML100DA-J-H3-CMI3ATECHNOTRANS (Pump G-1 10-2)

    Grundfos / Technotrans ML100DA Mechanical Seal — Fits ML100DA-J-H3-CMI3ATECHNOTRANS (Pump G-1 10-2)

    Grundfos / Technotrans ML100DA Mechanical Seal — Fits ML100DA-J-H3-CMI3ATECHNOTRANS (Pump G-1 10-2)

    Direct-fit aftermarket mechanical seal replacement for Grundfos Technotrans ML100DA pump applications. Designed for the ML100DA-J-H3-CMI3ATECHNOTRANS configuration (often referenced as Pump G-1 10-2 / 10-2), this compact seal is built with Silicon/Silicon faces and a Viton (FKM) elastomer for dependable sealing in demanding service.

    Seal details

    • Application: Grundfos / Technotrans ML100DA-J-H3-CMI3ATECHNOTRANS

    • Pump reference: G-1 10-2 (also searched as 10-2)

    • Materials: Faces Silicon/Silicon · Elastomers Viton (FKM)

    • Design: Compact mechanical seal

    Cross references & alternative part identifiers

    • ML100DA / ML100 DA / ML100DA seal

    • ML100DA-J-H3-CMI3ATECHNOTRANS (full model string)

    • G-1 10-2 / G1 10-2 / 10-2 / 10 2

    • Technotrans ML100DA mechanical seal

    Fitment note: Always match your pump/model code and the G-1 10-2 / 10-2 reference to your existing seal before ordering.

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  • Grundfos 06932440 mechanical seal 12mm

    Grundfos 12mm Mechanical Seal for Technotrans CM3 — OEM 06932440 Replacement 

    Grundfos 12mm Mechanical Seal for Technotrans CM3 — OEM 06932440 Replacement 

    Grundfos 12mm Mechanical Seal for Technotrans CM3 — OEM 06932440 Replacement

    Direct-fit aftermarket mechanical seal replacement for Technotrans / Grundfos CM3 pump applications using a 12mm shaft. This seal cross-references Grundfos OEM kit #06932440 (note: the OEM number is commonly sold as a full kit—we supply the mechanical seal only, not the complete kit). Built in a compact design for the CM pump series with Silicon/Silicon faces and a Viton (FKM) elastomer for dependable sealing performance.

    Seal Details

    • Shaft size: 12mm

    • Application: Technotrans Grundfos CM3-5A-S-G-V-AQQVE-A-A-N

    • Materials: Silicon/Silicon/Viton (FKM)

    • Design: Compact mechanical seal for CM pump series

    Cross Reference / Alternate Part Numbers

    06932440 • 069 32440 • #06932440 • Grundfos 06932440 seal • Technotrans CM3 seal 12mm • CM3-5A mechanical seal

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  • Grundfos 00985769 mechanical seal 12mm

    Grundfos 12mm Mechanical Seal — OEM 00985769 / 985204 / 00435045

    Grundfos 12mm Mechanical Seal — OEM 00985769 / 985204 / 00435045

    Grundfos 12mm Mechanical Seal — OEM 00985769 / 985204 / 00435045

    Direct-fit Grundfos 12mm mechanical seal replacement (shaft seal) for Grundfos MTH and CR-series pumps. This seal uses a durable three-prong tungsten carbide rotary face and is commonly ordered by OEM part number to ensure fast, accurate matching. Cross-references include 00985769 (confirmed), plus 985204 and 00435045 (customer-supplied alternates).

    Seal Details

    • Shaft size: 12mm

    • Rotary face: Three-prong tungsten carbide

    • Applications: Grundfos MTH 8-5015, MTH/C 2/4 series, CR & CRK pump models

    • OEM reference numbers: 00985769, 985204, 00435045

    Tested model compatibility (based on customer use)

    • CR4-120 U-G-A-AUUE — Model: C 41006072 xx 9809

    • CRN4-50-120 (confirmed same seal)

    • CRK2-150/15 A-M-A-AUUV — Model: C, 3KW

    Fitment note: Grundfos seals are often identified by part number + shaft size—always confirm your 12mm shaft and match your existing seal style before ordering.

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  • Grundfos VGMG-1400 Mechanical Seal 12mm

    Grundfos 12mm Single Spring Set Screw Mechanical Seal — VGMG-1400 Equivalent (CNP CDL Compatible)

    Grundfos 12mm Single Spring Set Screw Mechanical Seal — VGMG-1400 Equivalent (CNP CDL Compatible)

    Grundfos 12mm Single Spring Set Screw Mechanical Seal — VGMG-1400 Equivalent (CNP CDL Compatible)

    Direct-fit 12mm mechanical seal replacement for Grundfos-style / vertical multistage pump applications that use a single-spring, set-screw drive. Commonly used on CNP CDL/CDLF pump applications and cross-referenced as VGMG-1400 (also searched as VGMG 1400 or VGMG1400) for fast, accurate ordering. Built with a rugged Tungsten Carbide / Tungsten Carbide face set and Viton (FKM) elastomer for dependable sealing in demanding service.

    At a glance

    • Shaft size: 12mm

    • Drive type: Single spring with set screw

    • Face materials: Tungsten Carbide / Tungsten Carbide (TC/TC)

    • Elastomer: Viton (FKM)

    • Common application: CNP CDL series pumps

    Cross Reference / Alternate Part Numbers

    VGMG-1400 • VGMG 1400 • VGMG1400 • 12mm set screw mechanical seal • CNP CDL 12mm mechanical seal

    Fitment note: Always verify shaft size (12mm) and match the set-screw single-spring design against your existing seal before ordering.

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  • Grundfos 96405255 Mechanical Seal 16mm

    Grundfos 16mm Mechanical Seal — OEM 96405255 / 964057255 (16mm Pump Shaft Seal)

    Grundfos 16mm Mechanical Seal — OEM 96405255 / 964057255 (16mm Pump Shaft Seal)

    Grundfos 16mm Mechanical Seal — OEM 96405255 / 964057255 (16mm Pump Shaft Seal)

    Direct-fit Grundfos 16mm mechanical seal replacement for Grundfos CRT and TP series pumps, designed for fast, accurate ordering by OEM part number. This seal features a rugged three-prong tungsten carbide rotary face for long service life in demanding pump duty and is commonly searched as Grundfos 96405255 seal or 964057255 mechanical seal.

    Seal Details

    • Shaft size: 16mm

    • Rotary face: Three-prong tungsten carbide

    • Application: Grundfos CRT and TP series pumps

    • OEM reference numbers: 96405255, 964057255

    Tested model compatibility (based on customer use)

    • TP 40-80/2 U-G-A-BUBE

    • CRT16-3 A-P-A-E-AUUE

    Cross Reference / Alternate Part Numbers

    96405255 • 964 05255 • 964057255 • 964 057255 • “Grundfos 16mm pump seal” • “Grundfos TP mechanical seal 16mm” • “Grundfos CRT mechanical seal 16mm”

    Fitment note: Always verify 16mm shaft size and match your existing seal style before ordering.

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  • Buy Grundfos 16mm pump seal VGMG-1401

    Grundfos 16mm Single Spring Set Screw Mechanical Seal — VGMG-1401 Equivalent

    Grundfos 16mm Single Spring Set Screw Mechanical Seal — VGMG-1401 Equivalent

    Grundfos 16mm Single Spring Set Screw Mechanical Seal — VGMG-1401 Equivalent

    Direct-fit 16mm mechanical seal replacement for Grundfos-style / vertical multistage pump applications that use a single-spring set-screw drive. This seal is commonly used in CNP CDL pump systems and cross-references the OEM-style number VGMG-1401 for fast, accurate ordering. Built with Tungsten Carbide / Tungsten Carbide (TC/TC) faces and a Viton (FKM) elastomer for dependable sealing performance in demanding service.

    Seal Details

    • Shaft size: 16mm

    • Drive type: Single spring with set screw

    • Materials: TC/TC/Viton (FKM)

    • Application: CNP-CDL series pumps

    • OEM equivalent / cross reference: VGMG-1401

    Cross Reference / Alternate Search Terms

    VGMG-1401 • VGMG 1401 • VGMG1401 • “16mm set screw mechanical seal” • “CNP CDL 16mm mechanical seal”

    Fitment note: Always verify shaft size (16mm) and match the single-spring set-screw design to your existing seal before ordering.

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  • Placeholder

    Grundfos 22mm Pin Drive Double Cartridge Mechanical Seal — OEM 99030128 (Seal Only)

    Grundfos 22mm Pin Drive Double Cartridge Mechanical Seal — OEM 99030128 (Seal Only)

    Grundfos 22mm Pin Drive Double Cartridge Mechanical Seal — OEM 99030128 (Seal Only)

    High-quality aftermarket double cartridge mechanical seal replacement for Grundfos wastewater / grinder pump applications using a 22mm shaft with a pin-drive setting system. This design uses two bolt tabs to lock the seal for proper setting and installation. Cross-references Grundfos OEM 99030128 (note: the OEM part number is typically for the full kit—this listing is for the mechanical seal only).

    Seal Details

    • Shaft size: 22mm

    • Drive type: Pin drive with 2 bolt tabs

    • Design: Double mechanical cartridge seal

    • Application: Wastewater and grinder pump service

    • OEM reference: 99030128 (OEM # is for full kit; we offer mechanical seal only)

    Tested model compatibility (based on customer use)

    • SL1.20.A25.30.EX.2.6.J.C

    Cross Reference / Alternate Search Formats

    99030128 • 990 30128 • 990-30128 • “Grundfos 22mm pin drive mechanical seal” • “22mm double cartridge seal Grundfos”

    Fitment note: Always confirm 22mm shaft size and match the pin-drive / 2-bolt-tab setting style to your existing seal before ordering.

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  • Placeholder

    Grundfos 22mm Square Lug Drive Mechanical Seal — Double Cartridge

    Grundfos 22mm Square Lug Drive Mechanical Seal — Double Cartridge

    Grundfos 22mm Square Lug Drive Mechanical Seal — Double Cartridge — 2-Bolt Tab Setting (SEG Series)

    High-quality aftermarket double cartridge mechanical seal replacement for Grundfos pumps using a 22mm shaft and a square lug drive setting system. This seal uses a 2-bolt tab locking design to hold the seal in the set position for proper installation, making it a reliable choice for wastewater and grinder pump service. Listed customer use includes Grundfos SEG.A15.55.EX.2.60M, and the seal body is marked with material code 1.4408.

    At a glance

    • Shaft size: 22mm

    • Drive type: Square lug drive with 2 bolt tabs

    • Design: Double mechanical cartridge seal

    • Application: Wastewater & grinder pump duty

    • Material code marking: 1.4408 (on seal body)

    Tested model compatibility (based on customer use)

    • SEG.A15.55.EX.2.60M

    Cross reference / Alternative Search Terms

    “22mm square lug drive seal” • “22mm lug drive mechanical seal” • “2-bolt tab cartridge seal” • “Grundfos SEG 22mm seal” • “SEG.A15.55.EX.2.60M seal” • “1.4408 seal”

    Fitment note: Always verify shaft size (22mm) and match the square-lug drive / 2-bolt-tab setting style to your existing seal before ordering.

    Explore our full line up of OEM seals 

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  • Placeholder

    Grundfos 32mm Pin Drive Mechanical Seal — OEM #99489003

    Grundfos 32mm Pin Drive Mechanical Seal — OEM #99489003

    Grundfos 32mm Pin Drive Mechanical Seal — OEM #99489003 — Double Cartridge (2-Bolt Tab Setting)

    Direct-fit aftermarket Grundfos mechanical seal replacement for pump assemblies that use a 32mm shaft and a pin-drive, 2-bolt-tab setting system. This is an OEM-style double cartridge mechanical seal built for secure installation and stable sealing performance in clean water, wastewater, and light chemical service. Order by Grundfos part number 99489003 to match the correct pinned setting configuration.

    Seal Details

    • OEM reference: 99489003

    • Shaft size: 32mm

    • Design: Double cartridge mechanical seal

    • Drive / setting: Pin drive with 2 bolt tabs

    • Materials: Silicon / Silicon-Carbon / Viton (FKM)

    • Service: Clean water, wastewater, light chemical

    Fitment note: Always confirm 32mm shaft size and match the pin-drive / 2-bolt-tab setting style to your existing seal before ordering

    Cross Reference / Alternate Search Formats

    99489003 • 994 89003 • #99489003 • “Grundfos 32mm pin drive mechanical seal” • “32mm double cartridge seal 2 bolt tab”

    Explore our full line up of OEM seals 

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