The O-Ring, cataloged under National Stock Number 5331-00-171-7429, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Basic Rubber and Plastics Co.. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-171-7429 |
| Primary Part Number | 5331-171-7429 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Basic Rubber and Plastics Co. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.250 INCHES NOMINAL IN |
| Elongation Percentage | 300 MAXIMUM |
| 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 |
|---|---|
| 5331-171-7429 PRIMARY | Basic Rubber and Plastics Co. (USA) |
| MIL-PRF-2765E | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| PD5330-223-7 | 3/9 Design control — primary reference U.S. Government activity |
| MIL-R-2765 | 5/9 Secondary reference Sae International Dba Sae International |
| MIL-R-2765 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-00-171-7429 is a O-Ring, manufactured by Basic Rubber and Plastics Co., classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-171-7429 has 2 manufacturer part numbers on file: 5331-171-7429 (Basic Rubber and Plastics Co.), MIL-PRF-2765E (Sae International Dba Sae International).
5 possible matches (shared part number, not a government interchangeability claim): 9320-00-222-2569, 5331-00-825-1434, 5330-01-532-1551. Verify interchangeability with system specifications before substitution.
Key specifications for 5331-171-7429: Cross-Sectional Height: 0.250 INCHES NOMINAL IN; Elongation Percentage: 300 MAXIMUM; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 3 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.