Flygt 3127 Pump Repair Kit — Mechanical Seals & O-Ring Set (Standard or Griploc)

Direct-fit aftermarket repair kit for Flygt model 3127, built for routine maintenance and rebuilds where sealing components are commonly replaced to restore leak-free performance and reduce downtime.

Kit includes:

• Upper mechanical seal: CAR/TC/VIT — Carbon / Tungsten Carbide / Viton

• Lower mechanical seal: TC/TC/VIT — Tungsten Carbide / Tungsten Carbide / Viton

• Complete O-ring set: Buna-N (Nitrile/NBR) (see additional images)

Available versions (choose from dropdown menu above)

• Standard kit (traditional component seals)

• Standard kit with Griploc seals (optional upgrade)

Griploc? What is that?

Griploc (also searched as GripLoc) is a pre-set mechanical face seal design intended to speed installation and deliver more consistent installs—secured without set screws to help reduce shaft damage risk.

Griploc is Flygt/Xylem’s pre-set mechanical face seal for submersible pumps. It’s built for long, trouble-free operation with robust, clog-resistant construction, seal faces that maintain flatness for excellent leakage prevention, and a patented Griploc™ locking system that secures the seal to the shaft without set screws or shaft damage. Installation is straightforward—one mounting procedure across sizes, no special service tools needed—just a standard screwdriver and the mounting tool included with each seal. The Griploc seals use the latest all-metal design with a torque-setting screw on the cartridge (for setting the seal, not a shaft set screw). Traditional versions used a plastic shell with a large snap ring.’

Should I choose traditional or Griploc seals?

Traditional (separate-component) seals

• Familiar, proven format; lower component cost.

• Good choice when you already have the tools/experience and want the lowest initial price.

• Best for: routine rebuilds with experienced technicians and standard wastewater duty.

Griploc seals

• Pre-set working length: no shimming/measuring- faster, more consistent installs.

• Tooling: no special tools required—just a screwdriver and the included mounting tool.

• Service profile: excellent leakage control; robust against heat, wear, and clogging.

• Best for: minimizing downtime, mixed-skill crews, abrasive/variable conditions, or when you want the most repeatable outcome.

Quick pick:

• Prioritize speed, installation ease and consistency- Choose Griploc.

• Prioritize lowest upfront cost and you’re comfortable setting working length- Choose Traditional.

Explore our full line up of Pump Repair Kits

Looking for more? Check out our Shaft seals, Parts/Accessories & OEM seals

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