The O-Ring, cataloged under National Stock Number 5331-01-527-4499, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Minnesota Rubber Co. Government technical data includes 4 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-527-4499 |
| Primary Part Number | Q4220-431T |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Minnesota Rubber Co |
| Status | ACTIVE |
| Temp Rating | -20.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.125 INCHES NOMINAL IN |
| Center Hole Diameter | 1.375 INCHES NOMINAL IN |
| Material | RUBBER CARBOXYLIC-NITRILE-BUTADIENE CLASS XNBR |
| 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 |
|---|---|
| Q4220-431T PRIMARY | Minnesota Rubber Co (USA) |
NSN 5331-01-527-4499 is a O-Ring, manufactured by Minnesota Rubber Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-527-4499 has 1 manufacturer part number on file: Q4220-431T (Minnesota Rubber Co).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-664-2916. Verify interchangeability with system specifications before substitution.
Key specifications for Q4220-431T: Temp Rating: -20.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.125 INCHES NOMINAL IN; Special Features: 70 DUROMETER; CARBOXYLATED RUBBER; DIESEL FUELS MEDIA; Center Hole Diameter: 1.375 INCHES NOMINAL IN. 4 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.