Goulds Shaft Sleeve — 4K66

Precision-machined 316 stainless steel shaft sleeve for Goulds 3656 and 3756 centrifugal pumps. Installs over the pump shaft to provide a corrosion-resistant, replaceable sealing surface and protect the shaft in mechanical seal applications.

Compatibility: Goulds 3656 and 3756 pump series (verify against your BOM/nameplate).

Specifications: 1.000″ ID × 1.250″ OD × 1.500″ length

At a glance:

• Part/Ref.: 4K66

• Material: 316 stainless steel

• Use: Shaft protection + seal-ready surface (mechanical seal duty)

Why choose this sleeve:

• Corrosion resistance of 316 SS in chlorinated and industrial environments

• Protects the shaft—the sleeve takes wear instead of the shaft

• Smooth sealing surface for reliable mechanical seal performance

Ordering tip: Confirm ID, OD, length, and your pump model before purchase. Not sure it matches your build? Contact us—we’ll confirm fitment.

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