Flygt Plug-In 45mm Seal Kit — Double Cartridge Mechanical Seal (Pre-Assembled)

Replacement Flygt Plug-In 45mm double cartridge mechanical seal for Flygt submersible pumps that use a 45mm shaft. This plug-in, pre-assembled double seal cartridge simplifies installation during service/rebuilds and helps deliver consistent sealing performance by keeping the motor-side and liquid-side seals aligned in one unit.

Compatibility (45 mm shaft)

• Flygt pumps: 3171, 4650, 4660, 5100.250, 5100.251, 5100.260, 5100.261

• Cross-reference / part no.: (varies by build—contact us to confirm)

What’s included:

• Pre-assembled double mechanical seal cartridge (motor-side and liquid-side seals in one unit)

• Optional Add on- Complete O-ring kit — select the add-on using dropdown menu above 

Available versions:

• Cartridge mechanical seal only

• Cartridge mechanical seal + O-ring kit (recommended for a full rebuild)

Important fitment note: Flygt plug-in seal assemblies can vary by build. Please enter your full pump model number at checkout under “Pump Model Number Notes” so we can confirm the correct configuration for your unit.

Explore our full line up of Pump Repair Kits

Looking for more? Shop  Shaft seals, Parts & Accessories, and Pre-Cut Gaskets.

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