Multiquip 1027620 Kit, Mechanical Seal, Sleeve, O-Rings

The Multiquip 1027620 is a genuine OEM Kit, Mechanical Seal, Sleeve, O-Rings designed for the ST6125D and ST4125D submersible clean water pumps. This factory-sourced seal kit includes all critical sealing components needed to restore the pump's internal integrity in a single service package. Verified against Multiquip's OEM parts database, part 1027620 ensures a direct, by-the-numbers replacement for these submersible pump models. Whether you are performing scheduled maintenance or addressing an active leak, this kit delivers the correct components for a complete, confident repair.

Key Features

• Complete Sealing System in One Kit — Includes the mechanical seal, sleeve, and O-rings together, so every wear-prone sealing component is replaced at once rather than sourcing parts separately.
• Genuine OEM Construction — Manufactured to Multiquip's original material and dimensional specifications, ensuring the seal faces, elastomers, and sleeve meet the same compression and chemical-resistance ratings as the factory-installed components.
• Direct Fit for ST6125D and ST4125D — Engineered specifically for Multiquip ST6125D and ST4125D submersible clean water pump models, matching original mounting dimensions and shaft tolerances without rework.
• Restores Watertight Pump Operation — A failed mechanical seal allows water to migrate into the motor housing, leading to motor failure. Replacing the full seal assembly with 1027620 stops leakage and protects the pump's motor from water intrusion.
• Supports Planned Maintenance Intervals — Keeping a 1027620 kit on hand allows crews to execute seal service on schedule, preventing unplanned failures during active dewatering operations.

The mechanical seal in a submersible pump is the primary barrier between the pump's wet end and its motor. It works by pressing two precision-lapped seal faces together — one rotating with the shaft, one stationary — to prevent pumped water from reaching the motor cavity. The sleeve protects the shaft from wear at the seal contact zone, while the O-rings provide static sealing at mating surfaces throughout the assembly. When the mechanical seal wears, chips, or loses its face flatness, water bypasses the seal and enters the motor housing, which typically results in winding failure and complete pump loss. Replacing the seal, sleeve, and O-rings together as a matched set ensures all wear components are renewed simultaneously for a full-integrity repair.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.