The O-Ring, cataloged under National Stock Number 5331-01-673-9623, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-673-9623 |
| Primary Part Number | 12605977 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Cross-Sectional Height | 1.1 MILLIMETERS MINIMUM AND 4.1 MILLIMETERS MAXIMUM MM |
| Hardness Rating | 60.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM |
| Peripheral Diameter | 92.3 MILLIMETERS MINIMUM AND 95.3 MILLIMETERS MAXIMUM MM |
| Center Hole Diameter | 87.1 MILLIMETERS MINIMUM AND 90.1 MILLIMETERS MAXIMUM MM |
| Material | RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5331-01-673-9623 is a O-Ring, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-673-9623 has 2 manufacturer part numbers on file: 12605977 (U S Army Tank Automotive Command Amsta-Im-Mm), 12605977 (Oshkosh Defense Llc).
Key specifications for 12605977: Cross-Sectional Height: 1.1 MILLIMETERS MINIMUM AND 4.1 MILLIMETERS MAXIMUM MM; Hardness Rating: 60.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM; Peripheral Diameter: 92.3 MILLIMETERS MINIMUM AND 95.3 MILLIMETERS MAXIMUM MM; Center Hole Diameter: 87.1 MILLIMETERS MINIMUM AND 90.1 MILLIMETERS MAXIMUM MM. 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.