Wemco Pump Repair Kits

Wemco Hidrostal 2 in. Pump Repair KitUpper & Lower Seals with O-Ring Set, Fits FEXW6-MYAK+XG1A31

Item #N/A

This Hidrostal pump repair kit is a direct-fit aftermarket seal set for the Wemco Hidrostal FEXW6-MYAK+XG1A31 screw centrifugal pump. Supplied with the 2 in. upper mechanical seal, the silicon carbide lower seal and the model-specific O-ring kit. Built to OEM-equivalent standards or higher.

What’s in the kit

Upper mechanical seal, 2 in. — Carbon / Ceramic / Nitrile, crimped head
Lower mechanical seal, 2 in. — Silicon Carbide / Silicon Carbide / Viton, rubber covered single spring
O-ring kit — cut for the FEXW6-MYAK+XG1A31

The lower seal is built above OEM

The original runs tungsten carbide against silicon carbide. This kit runs silicon carbide on both faces with Viton elastomers — the hardest pair we offer, on the seal that sits in the pumped media. Its single spring is rubber covered, so rag and stringy solids cannot wrap it.

Kit variations

Both options carry the same seals and the same O-ring kit. The only difference is whether the four power end bearings ship with them.

Kit	What’s in the box	Choose this if
Without Bearings	Upper seal, Carbon / Ceramic / Nitrile · Lower seal, Silicon Carbide / Silicon Carbide / Viton · FEXW6-MYAK+XG1A31 O-ring kit	You are resealing the wet end only, or the bearings were done at the last service and still run quiet.
With Bearing Set	Everything above, plus the four power end bearings: FAG 3317, Nachi 6310-2NSE9C3 and two Nachi 7311BMU	The pump is coming apart anyway. Doing seals and bearings in one shutdown saves a second teardown and a second freight charge.

Not sure what came out of yours? Text a photo of the old seal or bearing to 561-414-1046. No purchase required.

Bearings in the full set

FAG 3317 — double row angular contact, 85 mm bore, x 1
Nachi 7311BMU — angular contact, 55 mm bore, x 2
Nachi 6310-2NSE9C3 — sealed deep groove, 50 mm bore, C3 clearance, x 1

Compatibility

Fits the Hidrostal FEXW6-MYAK+XG1A31. The seals are the 2 in. Wemco Hidrostal Type M pair. The O-ring kit and the bearing set are specific to this model — running a different Hidrostal build? Text a photo of the nameplate to 561-414-1046 and we will match the kit before you order.

Only need one part?The upper seal in this kit is also sold on its own, and we build repair kits across the solids-handling brands.

Doing the job yourself? Read How to Replace a Mechanical Pump Seal.

Weight	N/A
Dimensions	N/A
Kit Variant	Repair Kit with Bearings, Repair Kit without Bearings

Fairbanks Morse / Baldor Reliance Frame Seal Kit — Upper/Lower Seals + O-Ring Set Wemco Torque-Flow pump repair kit — upper carbon/ceramic seal, lower silicon carbide seal and Nitrile O-ring set for Model CESI

Wemco Torque-Flow Pump Repair KitUpper & Lower Seals with O-Ring Set, Fits Model CESI 4 x 11

Item #N/A

The Wemco Torque-Flow pump repair kit is a direct-fit aftermarket seal set for Wemco Torque-Flow recessed impeller pumps, matched to the Model CESI in the 4 x 11 size. Supplied with the upper mechanical seal, the lower mechanical seal and the O-ring set, so the wet end goes back together without hunting parts. Built to OEM-equivalent standards or higher.

Two kits available

Same seals, same fit — the difference is whether the lower seal spring is guarded.

Without Lower Spring Guard — the build most CESI pumps come apart in
With Lower Spring Guard — adds the metal guard over the lower seal spring

Which kit do I need?

Look at the lower seal you pulled out. If a metal guard sat over its spring, order the guarded kit — otherwise order the plain one.

Kit	What’s in the box	Choose this if
Without Lower Spring Guard	Upper mechanical seal, Carbon / Ceramic / Nitrile · Lower mechanical seal, Silicon Carbide / Silicon Carbide / Viton · O-ring set, Nitrile	The lower seal you removed has a bare spring with no guard over it. This is how most Model CESI pumps are found.
With Lower Spring Guard	Upper mechanical seal, Carbon / Ceramic / Nitrile · Lower mechanical seal, Silicon Carbide / Silicon Carbide / Viton · O-ring set, Nitrile · Lower seal spring guard	A metal guard sat over the old lower seal spring, or the pump handles stringy, fibrous or ragging material that can wrap a bare spring.

Not sure which one you pulled out? Text a photo of the old seal to 561-414-1046 and we will tell you. No purchase required.

Why these materials

The lower seal runs in the grit and sludge the pump is moving, so it is built with silicon carbide faces on both sides and Viton elastomers — the hardest faces we offer, and the ones that survive abrasives. The upper seal runs clean, where carbon against ceramic lasts just as long, so the kit is not padded with cost that buys nothing.

Compatibility

Fits the Wemco Torque-Flow Model CESI, size 4 x 11. The unit this kit was matched to carried nameplate data of 250 GPM, 47 ft. head, 1200 RPM and an 11.375 in. impeller. Running a different Torque-Flow size or model designation? Text a photo of the nameplate to 561-414-1046 before you order and we will confirm the kit against it.

How to order

Check the nameplate on your pump for the model and size.
Look at the lower seal you removed and choose the guarded or unguarded kit above.
Need different face or elastomer materials for your duty? Call us and we will build it.

Rebuilding a grit pump?We build repair kits, shaft seals and wear parts for recessed impeller and solids-handling pumps across the municipal wastewater brands.

Doing the job yourself? Read How to Replace a Mechanical Pump Seal.

Weight	2 lbs
Dimensions	7 × 7 × 4 in