The O-Ring, cataloged under National Stock Number 5331-00-736-0288, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Lydall Inc Elastomer Products Group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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 | 5331-00-736-0288 |
| Primary Part Number | HR166-282 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Lydall Inc Elastomer Products Group |
| Status | ACTIVE |
| Temp Rating | -10.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 2.426 INCHES MINIMUM AND 2.456 INCHES MAXIMUM IN |
| 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 |
|---|---|
| HR166-282 PRIMARY | Lydall Inc Elastomer Products Group (USA) |
| 2930-70 PRIMARY | Parco, Llc (USA) |
| AA150-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| A1716 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 8351278 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| A512-7 | 5/9 Secondary reference Parker Seal Div Parker-Hannifin Corp |
| 5330007360288 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| A1716 | 3/2 Design control — primary reference U.S. Government activity |
| 5331007360288 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5331-00-736-0288 is a O-Ring, manufactured by Lydall Inc Elastomer Products Group, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-736-0288 has 5 manufacturer part numbers on file: HR166-282 (Lydall Inc Elastomer Products Group), 2930-70 (Parco, Llc), AA150-70 (Parker-Hannifin Corp Div O-Ring Division), A1716 (Parker-Hannifin Corp Div O-Ring Division), 8351278 (U S Army Tank Automotive Command Amsta-Im-Mm).
9 possible matches (shared part number, not a government interchangeability claim): 5330-00-753-9712, 2520-00-754-0195, 5331-00-815-7994. Verify interchangeability with system specifications before substitution.
Key specifications for HR166-282: Temp Rating: -10.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 2.426 INCHES MINIMUM AND 2.456 INCHES MAXIMUM IN. 5 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.