The O-Ring, cataloged under National Stock Number 5331-01-538-2876, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Tompkins Industries Inc. Government technical data includes 1 specification, 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 | 5331-01-538-2876 |
| Primary Part Number | 90DFF-20 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Tompkins Industries Inc |
| Status | ACTIVE |
| Center Hole Diameter | 1.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| 90DFF-20 PRIMARY | Tompkins Industries Inc (USA) |
NSN 5331-01-538-2876 is a O-Ring, manufactured by Tompkins Industries Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-538-2876 has 1 manufacturer part number on file: 90DFF-20 (Tompkins Industries Inc).
Key specifications for 90DFF-20: Special Features: ENGINEERING MISSION MODULE (EMM) USED FOR THE PALLETIZED LOADING SYSTEM (PLS); Center Hole Diameter: 1.250 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: VITON 90 DUROMETER ORFS O-RING; End Item Identification: 3990-01-443-8024; DUMP BODY, DEMOU, XM6. 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.