The Retainer,seal, cataloged under National Stock Number 5330-01-219-9159, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-219-9159 |
| Primary Part Number | W1256BBS-2X2 |
| Item Name | Retainer,seal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Flange Thickness | 0.400 INCHES NOMINAL IN |
| Body Outside Diameter | 3.145 INCHES NOMINAL IN |
| Style Designator | FLANGED |
| Bolt Hole Diameter | 0.522 INCHES NOMINAL IN |
| Seal Seat Diameter | 2.737 INCHES NOMINAL IN |
| Aperture Diameter | 1.521 INCHES NOMINAL IN |
| Bolt Hole Quantity | 6 |
| Shortest Distance Between Body End and Mounting Flange | 0.440 INCHES NOMINAL IN |
| Mounting Flange Diameter | 5.940 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seal Seat Depth | 2.370 INCHES NOMINAL IN |
| Construction | ONE-PIECE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| W1256BBS-2X2/0113 | Circor Pumps North America Llc (USA) |
| SB6326 | Circor Pumps North America Llc (USA) |
| W1256BBS-2X2 PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| W1256BBS-2X2/0113 | 5/9 Secondary reference Siemens Energy, Inc. |
| W1256BBS-2X2 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 5330-01-219-9159 is a Retainer,seal, manufactured by Circor Pumps North America Llc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-219-9159 has 3 manufacturer part numbers on file: W1256BBS-2X2/0113 (Circor Pumps North America Llc), SB6326 (Circor Pumps North America Llc), W1256BBS-2X2 (Circor Pumps North America Llc).
Key specifications for W1256BBS-2X2: Overall Height: 2.280 INCHES NOMINAL IN; Flange Thickness: 0.400 INCHES NOMINAL IN; Body Outside Diameter: 3.145 INCHES NOMINAL IN; Style Designator: FLANGED. 12 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.