Bell & Gossett Series 60 & 1510 Cross-Reference Guide: How to Match the Right Seal Kit Without Guessing
A contractor calls in a seal kit for a “Series 60 pump” and gets handed a part that doesn’t fit. This isn’t a distributor error most of the time — it’s a structural feature of how Bell & Gossett names its product lines. “Series 60” and “Series 1510” aren’t single SKUs with one seal kit apiece. Each is a pump family spanning multiple bearing configurations, shaft sizes, and seal designs, and the correct kit is determined by the pump’s physical dimensions, not by the series name printed on the volute. This guide walks through how that numbering actually works, what to read off the nameplate before you order, and where the verified OEM data comes from — so the part that shows up is the part that fits.
Why “Series 60” and “Series 1510” Aren’t One Part Number
Bell & Gossett’s Series 60 line covers in-line mounted centrifugal pumps built in more than one bearing configuration — including sleeve-bearing and ball-bearing (“e-60”) variants — across a range of frame sizes, each identified by its pump size designation (for example, 1x1x5¼ or 1½x1½x7). The Series 1510 line is a base-mounted, end-suction pump family that itself splits into a stuffing-box-sealed configuration and a packless/cartridge configuration, again across a range of frame sizes.
The seal kit that fits a given pump is driven by the shaft or shaft-sleeve diameter at the seal cavity, not by “Series 60” or “Series 1510” as a standalone identifier. Two pumps in the same series, at different frame sizes, can require two entirely different seal kits — and two pumps in different series can occasionally share the same kit if the shaft diameter lines up. This is the single most common source of wrong-part orders: matching the kit to the series name instead of to the shaft dimension.
A note on “Series 60” vs. “Series e-60”: Xylem’s current product catalog lists the original Series 60 as replaced by Series e-60 (with a further e-60 EC variant for ECM-motor units) — meaning Series 60 is no longer the pump Xylem ships for new installations. It remains highly relevant here because of the size of the installed base still running in the field, and Xylem continues to publish and maintain a dedicated replacement-parts bulletin for it (CP-106F-PL, the source for the part numbers below). Series e-60 has its own separate parts bulletin (CP-107-PL) with its own kit numbering, which we have not cross-referenced in this guide. If your nameplate reads “e-60” rather than plain “60,” the part numbers below do not apply — confirm against the e-60-specific bulletin instead, or send us the nameplate and we’ll pull the correct one.
How Bell & Gossett Structures Seal Kit Material Options
Within a given frame size, Bell & Gossett publishes seal kits in multiple material compositions so the seal can be matched to system fluid conditions. According to Xylem’s official Series 60 parts documentation (Bulletin CP-106F-PL), the standard material options are:
| Option | Elastomer / Face Combination |
|---|---|
| Standard | Buna / Carbon vs. Ceramic |
| Option 2 | EPT / Carbon vs. Tungsten Carbide |
| Option 3 | Viton / Carbon vs. Ceramic |
| Option 4 | EPR / Silicon Carbide vs. Silicon Carbide |
This matters for the exact reason covered in our mechanical seal failure-mode guide: the standard Buna/Carbon/Ceramic kit is not the correct choice for every glycol concentration or fluid condition, and ordering by frame size alone without confirming the material option is how a contractor ends up replacing the same seal twice in one season.
Verified Reference Points — Series 60
The following are seal kit part numbers published directly in Xylem’s official Series 60 replacement parts documentation, shown here as confirmed examples rather than a complete catalog — Bell & Gossett publishes dozens of frame-size and material combinations, and the exact kit for your pump should always be confirmed against the nameplate:
| Pump Size | Seal Kit Part Numbers (by material option) |
|---|---|
| 1x1x5¼ | 118681LF, 185230LF, 186875, 185381 |
| 1½x1½x7 / 2x2x7 | 186499LF, 185223LF, 186945, and one option listed as “Contact Factory” |
That last line is worth calling out directly: on at least one frame size and material combination, Bell & Gossett’s own documentation lists the part as factory-order only rather than a stocked catalog number. If your pump happens to fall into that configuration, waiting on a factory-direct order can mean days of downtime on a commercial system — which is precisely the gap a regional distributor with cross-referenced inventory is built to close.
Impeller part numbers on Series 60 pumps are similarly frame-size specific and are typically ordered with the trim diameter stated explicitly (Bell & Gossett’s documentation lists example part numbers such as P58541, P58538, P57440, and P57580 across different frame sizes) — trim diameter is stamped on the impeller itself or specified on the original pump curve, and should be confirmed rather than assumed from pump size alone.
Verified Reference Points — Series 1510 (Stuffing Box Configuration)
For the e-1510 stuffing-box-sealed pump configuration, Xylem’s official parts documentation (Bulletin CP-209H-PL) ties the mechanical seal assembly directly to shaft sleeve diameter:
| Shaft Sleeve Diameter | Seal Assembly Part Number | Material |
|---|---|---|
| 1.25″ | P85070 | EPR / Carbon vs. Tungsten Carbide |
| 1.625″ | 185050 | EPR / Carbon vs. Tungsten Carbide |
| 2.375″ | P63308 | EPR / Carbon vs. Tungsten Carbide |
The same documentation lists packing ring sets (for pumps running compression packing rather than a mechanical seal) as a separate part family — part numbers AC6132 or P82072 depending on bore size, and AC6133 for the larger 2GB–8GB frame sizes, each sold as a four-piece set. If your 1510 is packed rather than mechanically sealed, ordering a mechanical seal assembly against that pump won’t fit regardless of how closely the shaft diameter matches — confirm which sealing method the pump actually uses before ordering either part family.
Watch It In Action
For the Series 1510 line specifically, Bell & Gossett publishes an official maintenance walkthrough — “Bell & Gossett Series 1510 Pump Maintenance: Step-by-Step Guide” — on its own YouTube channel (cross-posted to its official Facebook page as well), showing the pump disassembled down to the shaft, seal cavity, and impeller. It’s a useful visual companion to the shaft-diameter and material-option logic covered above, since it shows exactly where on the pump those dimensions are measured.
Watch “Bell & Gossett Series 1510 Pump Maintenance: Step-by-Step Guide” on YouTube →
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We didn’t find an equivalent official, manufacturer-published walkthrough specifically for the Series 60 line at the time of writing — if one becomes available, or if a verified third-party video meets the same sourcing bar, we’d add it here rather than substitute an unverified upload.
The Nameplate Data to Pull Before You Call
Because kit selection runs on physical dimensions rather than series branding, the fastest path to the correct part on the first try is reading four things directly off the pump before placing the order: the full model/size designation stamped on the nameplate (not just “Series 60” or “Series 1510”), the shaft or shaft-sleeve diameter at the seal cavity if it’s legible or measurable, whether the pump seals with a mechanical seal or compression packing, and the impeller trim diameter if an impeller is also being replaced. Photographing the nameplate before calling in an order eliminates most of the back-and-forth that causes same-day requests to slip to next-day.
Why This Is a Local Sourcing Problem, Not Just a Parts Problem
The “Contact Factory” line item in Bell & Gossett’s own Series 60 documentation is the clearest illustration of why cross-referencing matters commercially, not just technically: even within a single manufacturer’s catalog, some configurations aren’t held in standard factory stock. For a mechanical contractor or facility manager running an emergency service call on a commercial hydronic loop, the difference between a distributor who has already cross-referenced the shaft diameter and material option against on-hand inventory and one who has to submit a factory special order is the difference between same-day restart and a multi-day outage.
National Boiler Supply stocks Bell & Gossett-compatible seal kits and cartridge assemblies across the Series 60 and 1510 frame sizes most common in Gulf Coast commercial mechanical rooms, cross-referenced by shaft diameter and material option rather than series name alone. If you’re not certain which kit your pump takes, send us a nameplate photo — we’ll confirm the exact match against your system’s fluid conditions before it ships, same-day where inventory allows.
Sources: Bell & Gossett/Xylem official replacement parts documentation, Bulletin CP-106F-PL (Series 60 Maintenance Free In-Line Mounted Centrifugal Pumps) and Bulletin CP-209H-PL (Series e-1510 Stuffing Box Pumps Replacement Parts). Video: “Bell & Gossett Series 1510 Pump Maintenance: Step-by-Step Guide,” official Bell & Gossett YouTube/Facebook channel. Part numbers shown are confirmed examples from these documents, not an exhaustive catalog — always confirm against your pump’s nameplate before ordering.