The O-Ring, cataloged under National Stock Number 5331-01-387-6321, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Row Inc Dba Tfe-O-Sil. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-387-6321 |
| Primary Part Number | AS-242TS |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Row Inc Dba Tfe-O-Sil |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Material Document and Classification | ZZ-R-765 CLASS 2B, GRADE 70 FED SPEC 1ST MATERIAL RESPONSE AND LP-389A MFR REF 2ND MATERIAL RESPONSE A |
| Center Hole Diameter | 3.956 INCHES MINIMUM AND 4.012 INCHES MAXIMUM IN |
| Material | RUBBER SILICONE CLASS Q AND PLASTIC POLYTETRAFLUOROETHYLENE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AS-242TS PRIMARY | Row Inc Dba Tfe-O-Sil (USA) |
NSN 5331-01-387-6321 is a O-Ring, manufactured by Row Inc Dba Tfe-O-Sil, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-387-6321 has 1 manufacturer part number on file: AS-242TS (Row Inc Dba Tfe-O-Sil).
Key specifications for AS-242TS: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Material Document and Classification: ZZ-R-765 CLASS 2B, GRADE 70 FED SPEC 1ST MATERIAL RESPONSE AND LP-389A MFR REF 2ND MATERIAL RESPONSE A; Center Hole Diameter: 3.956 INCHES MINIMUM AND 4.012 INCHES MAXIMUM IN; Material: RUBBER SILICONE CLASS Q AND PLASTIC POLYTETRAFLUOROETHYLENE. 4 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.
NSN 5331-01-387-6321 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.