Industrial pump seals are one of the most frustrating things to source. The pump might be forty years old. The manufacturer might have been acquired twice. The number stamped on the old seal might not appear in any current catalogue. And the pump is down while you look.
We cross-reference by pump, not by dimension
Our industrial range covers more than 330 pump brands, listed by the manufacturer's own part number. You do not need to measure anything or work out what standard the seal conforms to — you look up the number from your pump.
Brands with the deepest coverage include:
- Aurora — nearly 200 seals
- Fairbanks Morse
- Goulds
- Crane-Deming · A-C · Gorman-Rupp
- Bell & Gossett · Worthington · Taco
- Pacific Pumping · Flowserve · Hydromatic · Gusher
- Baldor Reliance · Sta-Rite · Viking · Peerless · Cornell
- Berkeley · Carver · Armstrong
If your brand is not on that list, it is very likely still in the catalogue — those are simply the largest.
What "direct fit" means here
These are carbon/ceramic seals: a carbon primary ring on an elastomer bellows with a stainless spring, running against a ceramic seat in a rubber cup. They are dimensionally matched to the OEM seal, so the pump goes back together without shimming, machining or adaptation.
Some applications call for FKM elastomer rather than nitrile — chemical service, higher temperature, or aggressive process fluid. Where that applies we list an FKM version, such as the Goulds FKM shaft seal.
Fitting one without ruining it
- Handle the faces by the edges. Fingerprints on the carbon or ceramic contain oils that interfere with the seal film. Wipe both faces with isopropyl alcohol before assembly.
- Lubricate the rubber, never the faces. A film of silicone on the bellows and the seat cup helps them slide home. On the faces it causes slip, heat and immediate leakage.
- Press the seat squarely. Use a flat tool across the whole rubber cup. Cocking it chips the ceramic.
- Never run it dry. Even a few seconds without fluid will score a carbon face. Prime before starting.
- Check the shaft. A grooved or pitted shaft under the bellows will destroy a new seal quickly.
Can't find your number?
Send us the pump manufacturer, model and the number from the old seal. Cross-referencing obsolete industrial part numbers is most of what we do, and we would rather look it up than have you guess.
Before you reassemble
Seat every o-ring with a thin film of food-grade silicone lubricant. Dry rings pinch and take a set, which is how a new seal weeps within a season. Aqua Flex Food Grade Silicone Lubricant is what ships in our kits.
O-rings only. Never lubricate the polished carbon or ceramic faces of a mechanical shaft seal — they must run dry against each other or the seal slips and leaks from new.
Beaver Island Parts Company is not affiliated with, endorsed by, or sponsored by any equipment manufacturer named on this page. All brand names, model numbers and part numbers are the property of their respective owners and are used solely to identify the equipment our replacement parts fit.