The O-Ring, cataloged under National Stock Number 5331-00-641-4033, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-641-4033 |
| Primary Part Number | 100T077 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.228 INCHES MINIMUM AND 1.240 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 |
|---|---|
| 100T077 | Westinghouse Electric Corp (USA) |
| 66G341-23 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 100T077 | 5/9 Secondary reference Colt Industries Operating Corp Pratt and Whitney Machine Tool Div |
| 66G341-23 | 3/9 Design control — primary reference Colt Industries Operating Corp Pratt and Whitney Machine Tool Div |
NSN 5331-00-641-4033 is a O-Ring, manufactured by Westinghouse Electric Corp, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-641-4033 has 2 manufacturer part numbers on file: 100T077 (Westinghouse Electric Corp), 66G341-23 (Westinghouse Electric Corp).
Key specifications for 100T077: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 1.228 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN; 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.