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OEM Seals by Brand

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    Grundfos 22mm Pin Drive Mechanical Seal #99030128

    Grundfos 22mm Pin Drive Mechanical Seal #99030128

    Grundfos 22mm Pin Drive Mechanical Seal – 99030128

    High-quality aftermarket double cartridge seal designed for Grundfos pumps using a 22mm shaft and pin drive system. This model features a two-bolt tab locking design for proper setting and installation.

    Seal Details:

    • Shaft Size: 22mm

    • Drive Type: Pin drive with 2 bolt tabs

    • OEM Reference: 99030128 (OEM # is for full kit, we offer mechanical seal only)
    • Design: Double mechanical cartridge seal

    • Application: Wastewater and grinder pump service

    Tested Model Compatibility (based on customer use):

    • SL1.20.A25.30.EX.2.6.J.C

    Explore our full line up of OEM seals 

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    Grundfos 22mm Square Lug Drive Mechanical Seal

    Grundfos 22mm Square Lug Drive Mechanical Seal

    Grundfos 22mm Square Lug Drive Mechanical Seal

    High-quality aftermarket double cartridge seal designed for Grundfos pumps using a 22mm shaft and square lug drive system. This model features a two-bolt tab locking design for proper setting and installation.

    Seal Details:

    • Shaft Size: 22mm

    • Drive Type: Square lug with 2 bolt tabs

    • Material Code: Marked 1.4408 on seal body

    • Design: Double mechanical cartridge seal

    • Application: Wastewater and grinder pump service

    Tested Model Compatibility (based on customer use):

    • SEG.A15.55.EX.2.60M

    This seal is built to meet or exceed OEM specifications for performance and fit, making it a trusted upgrade for SEG-series Grundfos pumps.

    Explore our full line up of OEM seals 

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    Grundfos 32mm Pin Drive Mechanical Seal # 99489003

    Grundfos 32mm Pin Drive Mechanical Seal # 99489003

    Grundfos 32mm Pin Drive Mechanical Seal – Part #99489003

    OEM-style double cartridge mechanical seal with precision pin drive and two-bolt tab locking design for secure installation. Built for high-performance Grundfos pump applications requiring stable, high-load sealing performance.

    Seal details:

    • Shaft Size: 32mm

    • Design: Double Cartridge Seal

    • Drive: Pin drive with 2 bolt tabs for setting

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

    • Application: Clean water, wastewater, and light chemical service

    Compatibility:

    • Direct aftermarket replacement for Grundfos part #99489003

    • Ideal for OEM Grundfos pump assemblies using a 32mm shaft with pinned setting configuration

    Explore our full line up of OEM seals 

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    Grundfos 32mm Square Lug Drive Mechanical Seal

    Grundfos 32mm Square Lug Drive Mechanical Seal

    Grundfos 32mm Square Lug Drive Mechanical Seal

    Premium aftermarket double cartridge mechanical seal featuring a square lug drive and two-bolt tab locking design for secure, precise installation. Engineered for durability in demanding Grundfos pump applications.

    Seal Details:

    • Shaft Size: 32mm

    • Drive Type: Square lug drive with 2 bolt tabs for setting

    • Design: Double Cartridge Seal

    • Seal Faces: Silicon vs. Silicon-Carbon

    • Elastomers: Viton (FKM)

    Tested Model Compatibility (based on customer use):

    • SLV.30.A30.150.2.61RC

    • SLV.40.A40.100

    • SLV.30.A40.30.4.61J

    Explore our full line up of OEM seals 

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    Grundfos 43/55mm Double Cartridge Mechanical Seal # 96952242

    Grundfos 43/55mm Double Cartridge Mechanical Seal # 96952242

    Item #N/A

    Grundfos 43/55mm Double Cartridge Mechanical Seal – Part #96952242

    Premium aftermarket cartridge-style mechanical seal designed to fit Grundfos SE and SL series submersible wastewater pumps. Engineered to handle tough sewage and wastewater applications, this double mechanical seal offers long-lasting reliability in high-load, high-velocity systems.

    Available options: (choose from drop down menu above)

    • Seal Only

    • Seal + Buna O-Ring Kit for SLV.30.A40.300.4.61J

    • Seal + Buna O-Ring Kit for SEV.30.A30.230.2 52H.C.EX.61R (26.1 HP)

    Seal Construction:

    • Seal Face: Silicon vs. Silicon-Carbon

    • Secondary Seals: Viton (FKM)

    • Style: Cartridge Mechanical Seal (Double Seal Design)

    Cross References:

    • Replaces Grundfos OEM: 96952242
      Alternate Part Numbers (lower-grade material versions): 99352843, 92773081

    Compatible with Grundfos Pump Series:

    • SE & SL Series: 9–30 kW / 12–42 HP

    • Including SLV EX, SL EX, SL1 EX, SL2 EX

    • Supports both 2-pole and 4-pole configurations

    Tested Model Compatibility (based on customer use):

    • SE1.35.A40.27.xx – 30.0 HP

    • SE1.75.100.170.2

    • SLV.30.A30.300.x – 52H.S.N.61P

    • SE1.30.A40.230.2 – 26.2 / 22.8 HP

    • SLV.30.A30.300.2 – 33.2 / 29.5 HP

    • SE1.35.A60.245.4 – 27.1 / 24.1 HP

    • SEV.30.A30.230.2 – 26.1 HP

    Explore our full line up of OEM seals 

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  • buy grundfos type b bellows seal

    Grundfos CR / LP / UTP — OEM Type B Bellows Component Seal (12, 16MM)

    Grundfos CR / LP / UTP — OEM Type B Bellows Component Seal (12, 16MM)

    Item #N/A

    Grundfos CR / LP / UTP — OEM Type B Bellows Component Seal

    Bellows-type component mechanical seal for Grundfos multistage and end-suction builds. Two sizes available, each supplied in SiC/SiC faces with Viton® elastomers (SIC/SIC/VIT) for durability, temperature, and chemical resistance.

    How to order: Select your size from the dropdown to view pricing and the exact product photo.

    Sizes & Cross-References

    12 mm (405347)— OEM Type B (BUBV)

    • Build: 12 mm single-spring, full bellows component seal; 2-piece design (rotary + stationary seat) with O-ring; SiC/SiC/Viton.

    • Fits: CRK 2, CRK 4 (Seal House has confirmed fitment to CRK4.)

    • Alt. manufacturing numbers: 405096, 405347, 405347TC

    16 mm (425762, 964092654) — OEM Type B (BUBE)

    • Build: 16 mm single-spring, full bellows component seal; 2-piece design (rotary + stationary seat) with O-ring; SiC/SiC/Viton.

    • Fits: CRN 8, CR 16 (Grundfos BUBE 16 mm bellows)

    • Equivalent: VGMG-1304

    • Confirmed applications by Seal House (examples): 2.5LP5 U-G-A-BUBE, UPT50-160 U-G-A BUBE D9726

    • Primary mfg number: (Old: 425762 New: 964092654). Alt. manufacturing numbers: 425763, 425762, 425762TC

    Why choose this seal

    • Bellows component design for stable working length and smooth installation

    • SiC/SiC faces + Viton® for wear, temperature, and chemical resistance

    • OEM Type B form factor to match Grundfos assemblies

    What’s included: Component mechanical seal (rotary + seat). (Ancillary gaskets/sleeves sold separately unless noted.)

    Notes:
    Please verify shaft size (12 mm or 16 mm), series/model (CR/CRK/CRN/LP/UTP), and OEM type code (BUBV/BUBE) against your nameplate or parts list. Need help confirming the right option? Contact us—we’ll match it to your pump and duty.

    Explore our full line up of OEM seals 

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  • Grundfos 12mm threaded mechanical seal

    Grundfos CR / OEM type H / E, Unitized (12-28MM)

    Grundfos CR / OEM type H / E, Unitized (12-28MM)

    Item #N/A

    Grundfos CR Unitized Mechanical Seal — Type H / E

    Direct-fit unitized cartridge seals for Grundfos multistage pumps. Choose your shaft size below to match the correct OEM type and build. All versions supplied in Viton® / Silicon Carbide / Silicon Carbide (VIT/SIC/SIC) for durability, temperature, and chemical resistance.

    Select your size from the dropdown above to see pricing and the exact product photo (12, 16, 22, 28 mm).

    Sizes & Cross-References

    12 mm (96455086) — Type H (Threaded Cartridge) 

    • Build: VIT/SIC/SIC, threaded cartridge

    • Fits: CR, CRI, CRN, CRNE sizes 1, 3, 5, 8 (e.g., CR3, CRN5)

    • Alt. manufacturing numbers: 96455082, 96455083, 96455084, 96455085, 96455086, 96455087, 96455089

    16 mm (96484071, 96511844) — Type H (Threaded Cartridge)

    • Build: VIT/SIC/SIC, threaded cartridge

    • Fits: CR, CRI, CRN, CRNE sizes 10, 15, 20 (e.g., CRN15, CR20)

    • Alt. manufacturing numbers: 96484071, 96511836, 96511837, 96511840, 96511841, 96511844, 96511845

    22 mm (96525458) — Type E (Clamp-In Cartridge)

    • Build: VIT/SIC/SIC, clamp-in cartridge

    • Fits: CR, CRI, CRN, CRNE sizes 32, 45, 64, 90

    • Alt. manufacturing numbers: 96416584, 96433365, 96436728, 96525458, 96525459, 96525490

    28 mm — Type H (Thread-In)

    • Part no.: 992626350

    • Build: VIT/SIC/SIC, thread-in mechanical seal

    • Fits: CR/CRN 125–255 (D28)

    Why this seal

    • Unitized cartridge = consistent working length, faster installs

    • SiC/SiC faces + Viton® elastomers = wear, temperature, and chemical resistance

    • OEM Type H/E form factors to match Grundfos assemblies

    Notes:
    Please verify shaft size, series/size (CR/CRI/CRN/CRNE), and OEM Type (H/E) against your nameplate or parts list. If you need alternate material codes or help confirming the correct seal, contact us—we’ll match it to your pump, we are here to help.

    Explore our full line up of OEM seals 

    Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

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  • Placeholder

    Grundfos Technotrans ML100DA Mechanical Seal

    Grundfos Technotrans ML100DA Mechanical Seal

    Grundfos Technotrans ML100DA Mechanical Seal

    Mechanical seal designed for Grundfos Technotrans ML100DA-J-H3-CMI3ATECHNOTRANS pumps. Built for lasting performance in demanding applications, this seal is constructed with premium materials to ensure durability and reliability.

    Seal Details:

    • Application: Grundfos ML100DA-J-H3-CMI3ATECHNOTRANS Pump G-1 10-2
    • Material: Faces: Silicon/Silicon; Elastomers: Viton (FKM)
    • Design: Compact mechanical seal

    Explore our full line up of OEM seals 

    Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

    Have questions? Call us anytime- we’re here to help 

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  • Placeholder

    HCP AF Series Pumps Mechanical Seal

    HCP AF Series Pumps Mechanical Seal

    Item #N/A

    HCP AF Series Pumps Mechanical Seal

    Upgrade or repair your HCP AF Series submersible pump with this direct-fit replacement mechanical seal. Designed for HCP sewage/wastewater pumps, this seal restores leak-free performance and protects your pump’s motor from fluid ingress. Each seal is built to OEM specifications for a precise fit, ensuring reliable operation even in demanding industrial and municipal applications. The heavy-duty construction stands up to abrasives and corrosive environments, giving you long-lasting service life with every seal replacement.

    • Built to Fit: Direct replacements for OEM seals in AF Series models like 80AFU27.5, 80AFU43.7, 100AFE415, and 100AFE422.

    • Durable Construction: long-lasting wear and chemical resistance.

    • Ready for Demanding Use: Ideal for municipal and industrial wastewater systems. Handles abrasive, corrosive media.

    Seal Variations by seal part number: (choose from dropdown menu above):

    • F21-0C030NS0001-0 – Fits HCP 80AFU27.5MTS/MS & 80AFU43.7

    • F21-0C040CS0000-0 – Fits 40mm seal applications in mid-size AF Series pumps

    • F21-0C045CS0001-0 – Fits 100AFE415 / 150AFE415 and 100AFE422 / 150AFE422 (20–30HP models)

    Choose the correct seal part number based on your specific pump model. The HCP AF Series uses different mechanical seal sizes for different motor ratings – 30 mm, 40 mm, and 45 mm seal assemblies are available to cover various pump models in the series.

    Note: In HCP model numbers (e.g. 100AFE415), “AFE” denotes the pump series/type (AF Series, specific impeller or design variant), the leading “4” indicates a 60 Hz model, and the following digits (e.g. 15) represent the motor’s kW rating (15?kW in this example), which correlates to the required seal size. Always match your pump’s full model code to the correct seal part number to ensure proper fit.

    Need Help? Not sure which seal fits your pump or have questions about installation? Contact us anytime – we’re here to assist you.

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