Cartridge equivalents
Pre-set single and double cartridge equivalents to API 682 for process pumps.
Flowserve-Compatible Mechanical Seals
Drop-in replacement seals built to Flowserve dimensions — cartridge, single and bellows equivalents at manufacturer-direct pricing.
We build most Flowserve seals, not only the types named on this page. Send the seal part number, a drawing or the old seal.
At a glance
- 01Cartridge / single / bellows equivalents
- 02SiC / Carbon / TC
- 03API 682
- 04OEM dimensions
- 05Custom
We are the manufacturer, not a reseller — we build in-house and supply at quantities that work for a distributor, an OEM or a maintenance department.
Drop-in fitmatched to Flowserve envelopes
API 682process-grade equivalents to spec
Cost savingsmanufacturer-direct vs OEM pricing
Selection
Why a Flowserve-compatible seal
- Same fit, lower cost
Built to Flowserve dimensions so it drops into the same pump.
- Faster availability
No long OEM lead times; we machine to the pattern in-house.
- Matched materials
Face pair and elastomer specified to the duty, to API 682 where required.
- Obsolete patterns covered
Discontinued Flowserve seals reverse-engineered from a sample.
See how the major brands compare in our John Crane vs Flowserve breakdown.
Range
What we supply
Drop-in equivalents across the common Flowserve range, OEM-compatible or fully custom.
Single & component equivalents
Balanced and unbalanced single seals matched to Flowserve patterns.
Custom & obsolete
Discontinued or non-standard Flowserve patterns machined from a drawing or sample.
Selection guide
Match the replacement to your Flowserve seal
Send the part number, a drawing or the old seal and we confirm the equivalent. The table is a starting point.
| Original style | Equivalent | Face pair | Typical duty |
|---|---|---|---|
| Cartridge single | Cartridge equivalent | SiC / SiC | Process pumps |
| Cartridge double | Double cartridge | SiC / SiC | Hazardous duty |
| Component single | Single equivalent | Carbon / SiC | Water / utilities |
| Metal bellows | Bellows equivalent | Carbon / SiC | High temperature |
OEM-compatible equivalents built to the original envelope — not sold as genuine Flowserve parts.
Go deeper: John Crane vs Flowserve · Cartridge seals.
FAQ
Flowserve-Compatible Seal FAQ
Are these genuine Flowserve seals?
No — they are OEM-compatible equivalents built to Flowserve dimensions at manufacturer-direct pricing. They are not sold as genuine Flowserve parts.
Will it fit my pump exactly?
Built to the same envelope as the original. Send the Flowserve part number, a drawing or the old seal and we confirm the fit before quoting.
Do you build to API 682?
Yes — cartridge equivalents to the standard’s arrangement and piping-plan requirements.
Can you match obsolete Flowserve seals?
Yes — we reverse-engineer discontinued patterns from a sample or drawing.
Source Flowserve-Compatible Seals At Scale
OEM-compatible, custom-machined and private-label Flowserve equivalents built in-house to your spec, at low minimums. Send a part number, a drawing or a sample and we’ll quote.