The O-Ring, cataloged under National Stock Number 5331-01-568-6660, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Walchem Corp. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-568-6660 |
| Primary Part Number | EH0027 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Walchem Corp |
| Status | ACTIVE |
| Material | RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM |
| 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 |
|---|---|
| INST MAN EZ-SERIES IT. 17 | Walchem Corp (USA) |
| EH0027 PRIMARY | Walchem Corp (USA) |
NSN 5331-01-568-6660 is a O-Ring, manufactured by Walchem Corp, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-568-6660 has 2 manufacturer part numbers on file: INST MAN EZ-SERIES IT. 17 (Walchem Corp), EH0027 (Walchem Corp).
Key specifications for EH0027: Special Features: USED ON THE METERING PUMP, EZB20D1-VC OR EZB2AD1-VC; End Item Identification: LCS 2 COMBAT SHIP; LOGISTICS SUPPORT VESSEL; Material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM. 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.