Bell & Gossett 186499LF Seal Kit No.2 is a lead-free Buna-N seal kit designed for Bell & Gossett hydronic pumps used in heating systems. The kit uses a 3/4-inch inner-diameter bronze-fit seal and Buna elastomers to provide a reliable seal for water-based circulating systems. It is specified for PD-38 and PD-40 pumps, the Series 60 family (including 60 “A” and 60 2-1/2F), MF-60 variants with a 7-inch impeller, and certain Series 90 pumps (AA and A), making it a direct replacement for 186499. This No.2 Buna seal kit is intended to restore pump performance when seals wear, enabling continued efficient operation of heating circuits.
