Bell & Gossett Series 60/90 Pump Repair Kit (3/4″ Shaft)

Mechanical Seal 186499LF, Sleeve 186944/P08730 & Gaskets P57410, P57700

Direct-fit pump repair kit for Bell & Gossett Series 60/90 circulator pumps and related models. Each kit is designed around a 3/4″ (0.750 in.) shaft size and includes the critical parts needed to stop leaks and restore performance: a new mechanical seal, shaft sleeve and volute gaskets, plus sundry items for a professional rebuild. Components match OEM fit and dimensions for faster, cleaner installation.

What’s included:

• Mechanical Seal – 186499LF (Buna/Carbon/Ceramic)

  • Cross-referenced to SJB-437.

• Shaft Sleeve – 186944 or P08730 (0.687 × 0.750 × 1.42 inch)

  • Fits over the shaft to prevent wear; sometimes listed by dimension alone (0.687×0.750×1.42).

• Volute Gasket – P57410

  • Fits Series 60 and 90 volute; OEM number used for reference only.

• Body Gasket – P57700

  • Seals the pump body when reassembled.

• Sundry item – Vibra Tite #530 (small tube)

  • Helps secure the sleeve/threads during assembly.

Key details

• For pump series: Bell & Gossett Series 60, Series 90, PD and 1535 (3/4″ shaft applications).

• Shaft size: 3/4″ (0.750in.).

• Kit purpose: Replace leaking seals, worn sleeves and old gaskets with direct-fit components.

• Materials: Buna rubber elastomers for the seal; carbon vs. ceramic faces (OEM-style); gaskets supplied in durable synthetic materials.

Fitment & applications

This kit fits most Bell & Gossett Series 60/90 pumps (also covers PD and 1535 models). Confirm your shaft diameter (0.750 in.) and note that some pumps share the same shaft size but use different kits—verify by OEM seal kit number or by the components listed above.

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