The O-Ring, cataloged under National Stock Number 5331-01-183-6647, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hayward Industrial Products, Inc Dba Hayward Plastic Products Division Div Eaton Filtration, Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-183-6647 |
| Primary Part Number | ST262Z5B |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hayward Industrial Products, Inc Dba Hayward Plastic Products Division Div Eaton Filtration, Llc |
| Status | ACTIVE |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ST262Z5B | Haywardindl. Products, Inc. (USA) |
| ST051015BF11A-4 | Haywardindl. Products, Inc. (USA) |
| SD051085 NO.4 | Haywardindl. Products, Inc. (USA) |
| ST262Z5B PRIMARY | Hayward Industrial Products, Inc Dba Hayward Plastic Products Division Div Eaton Filtration, Llc (USA) |
NSN 5331-01-183-6647 is a O-Ring, manufactured by Hayward Industrial Products, Inc Dba Hayward Plastic Products Division Div Eaton Filtration, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-183-6647 has 4 manufacturer part numbers on file: ST262Z5B (Haywardindl. Products, Inc.), ST051015BF11A-4 (Haywardindl. Products, Inc.), SD051085 NO.4 (Haywardindl. Products, Inc.), ST262Z5B (Hayward Industrial Products, Inc Dba Hayward Plastic Products Division Div Eaton Filtration, Llc).
Key specifications for ST262Z5B: Part Name Assigned by Controlling Agency: COVER O-RING; End Item Identification: 1-1/2IN MODEL 50 DUPLEX STRAINER,BRONZE 150LBS ANSI FF FLANGED; LOGISTICS SUPPORT VESSEL LBS; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.