Acquisition method (AMC)
3
FSC 4310 × RING SET,PISTON
RING SET,PISTON
4310-01-122-4286 FSC 4310
NSN 4310-01-122-4286 (also written 4310011224286; NIIN 01-122-4286) is a ring set, piston in Federal Supply Class 4310, Compressors and Vacuum Pumps. 12 manufacturer part numbers from 7 suppliers are on record. It was last purchased in Oct 2026.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
C
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC C: needs engineering source approval; other sources must qualify first. The codes describe the item's status on record, not any one solicitation. What the codes mean
What it is — can you make it?
Dimensions, the FLIS specification requirements, and the manufacturer part numbers already qualified against this NSN.
Specifications
From the federal catalog (DLA FLIS / PUB LOG) — what your part has to meet. Cited specification documents can be looked up in ASSIST Quick Search ↗, DoD's public spec repository — copy the document number in.
| Requirement | Value |
|---|---|
| STANDARD BORE DIAMETER ACXZ | INCHES 4.375 |
| PISTON ACCOMMODATION QUANTITY AETD | 2 |
| RING SET COMPONENT PARTS AETE | COMPRESSION RING,A8795,75370,3; RIDER RING,85710,75370,1 |
| SPECIAL FEATURES FEAT | ALL RINGS ARE POLYTETRAFLUOROETHYLENE |
Manufacturer part numbers
Commercial part numbers cross-referenced to this NSN in the federal catalog — the parts that have been accepted as satisfying this stock number, and who makes them.
| Part number | CAGE | Manufacturer |
|---|---|---|
| 1W136881 | 0AT62 | SIEMENS ENERGY, INC. DBA DRESSER-RAND |
| 1W136881 | 830Q4 | CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS |
| 1W136881 | 88663 | DRESSER-RAND CO INGERSOLL-RAND OPNS A JOINT VENTURE |
| 1W136881 | 8FGX3 | CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS |
| 4310PL1261948 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX |
| B4698-80 | 75370 | KAYDON RING & SEAL INC DBA SKF PRECISION TECHNOLOGIES |
| CE-1W136881 | 58430 | COMPRESSOR ENGINEERING CORP |
| CE-W136881 | 58430 | COMPRESSOR ENGINEERING CORP |
| W136881 | 0AT62 | SIEMENS ENERGY, INC. DBA DRESSER-RAND |
| W136881 | 830Q4 | CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS |
| W136881 | 88663 | DRESSER-RAND CO INGERSOLL-RAND OPNS A JOINT VENTURE |
| W136881 | 8FGX3 | CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS |
What it pays — so you can quote
The government's own price and demand record for this NSN — what past awards cleared at, so you know where to land your quote.
Latest unit price
$1,408.00
Purchases
1
Total spend
$8,448
Oct 20, 2026
Last purchased
2 · 2.0/yr
Purchase records
$16,896
Total demand
$1,408.00
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Oct 20, 2026 | 6 | $1,408.00 | $8,448 | COMPRESSOR ENGINEERING CORP (58430) | Unknown | Source ↗ |
Related contract actions
Contract action totals, not unit prices — obligation amounts from USAspending for related awards, shown for context only. These do not appear on the price chart above.
| Action date | Award # | Recipient | Agency | Obligation |
|---|---|---|---|---|
| Oct 20, 2026 | SPE7M127V0402 ↗ | COMPRESSOR ENGINEERING CORP | — | $8,448 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 1 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
Who wins this item
Does one supplier win this every time, and are the winners on the listed-source list? One dot per award.
- Award in the last 2 years
- Older award
COMPRESSOR ENGINEERING CORP
last award Oct 2026
CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS
no award yet
no awards on record
Listed source CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS
no award yet
no awards on record
Listed source DRESSER-RAND CO INGERSOLL-RAND OPNS A JOINT VENTURE
no award yet
no awards on record
Listed source JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX
no award yet
no awards on record
Listed source KAYDON RING & SEAL INC DBA SKF PRECISION TECHNOLOGIES
no award yet
no awards on record
Listed source SIEMENS ENERGY, INC. DBA DRESSER-RAND
no award yet
no awards on record
Listed source COMPRESSOR ENGINEERING CORP won the only award on record.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE7M1-27-T-0290 | Oct 8, 2026 | Oct 19, 2026 | 6 | Expired | View at DIBBS → |
Open RFQs on DIBBS → DIBBS award history ↗
About this data
- Unit prices: DLA DIBBS award records — every row links to its government record.
- AMSC: latest observed value from DIBBS solicitation history as of Oct 10, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-10-21.
- Full methodology →
Cite this page
Citation
NSN Explorer. "RING SET,PISTON." nsnexplorer.com, https://nsnexplorer.com/nsn/4310-01-122-4286/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/4310-01-122-4286/