The O-Ring, cataloged under National Stock Number 5331-01-621-2728, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Racor Division Div Racor Division. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-621-2728 |
| Primary Part Number | RK 11340 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corporation Dba Racor Division Div Racor Division |
| Status | ACTIVE |
| Outside Diameter | 0.875 INCHES NOMINAL IN |
| Supplementary Features | 7/8-INCH SAE |
| 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 |
|---|---|
| RK 11340 PRIMARY | Parker-Hannifin Corporation Dba Racor Division Div Racor Division (USA) |
NSN 5331-01-621-2728 is a O-Ring, manufactured by Parker-Hannifin Corporation Dba Racor Division Div Racor Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-621-2728 has 1 manufacturer part number on file: RK 11340 (Parker-Hannifin Corporation Dba Racor Division Div Racor Division).
Key specifications for RK 11340: Outside Diameter: 0.875 INCHES NOMINAL IN; Supplementary Features: 7/8-INCH SAE; Special Features: CMS DATA ID 8796 PCCN SE0299 PLISN A368H; NEXT HIGHER ASSEMBLY 2920-01-615-0691 ENGINE, DIESEL QSM11-DM; Part Name Assigned by Controlling Agency: O-RING, DRAIN FITTING. 2 specifications are 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.