The O-Ring, cataloged under National Stock Number 5331-01-513-5421, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Chemetron Fire Systems. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-513-5421 |
| Primary Part Number | 70230018 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Chemetron Fire Systems |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.372 INCHES NOMINAL IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | (1CSX7)COMPOUND 4753 MFR REF SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 0.120 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| 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 |
|---|---|
| A70230018 | Chemetron Fire Systems (USA) |
| 70230018 PRIMARY | Chemetron Fire Systems (USA) |
| C20610281 ITEM 7 | Chemetron Fire Systems (USA) |
NSN 5331-01-513-5421 is a O-Ring, manufactured by Chemetron Fire Systems, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-513-5421 has 3 manufacturer part numbers on file: A70230018 (Chemetron Fire Systems), 70230018 (Chemetron Fire Systems), C20610281 ITEM 7 (Chemetron Fire Systems).
Key specifications for 70230018: Temp Rating: -65.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.372 INCHES NOMINAL IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: (1CSX7)COMPOUND 4753 MFR REF SINGLE MATERIAL RESPONSE. 6 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.