The O-Ring, cataloged under National Stock Number 5331-01-622-3572, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-622-3572 |
| Primary Part Number | PT105901 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| PT102216-4790 ITEM NO.78 | Hunt Valve Company, Inc. (USA) |
| PT105901 PRIMARY | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| PT102216-4790 ITEM NO.78 | 5/9 Secondary reference Hunt Valve Actuator, Llc Div Hunt Valve Actuator |
| PT105901 | 3/9 Design control — primary reference Hunt Valve Actuator, Llc Div Hunt Valve Actuator |
NSN 5331-01-622-3572 is a O-Ring, manufactured by Hunt Valve Company, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-622-3572 has 2 manufacturer part numbers on file: PT102216-4790 ITEM NO.78 (Hunt Valve Company, Inc.), PT105901 (Hunt Valve Company, Inc.).
Key specifications for PT105901: Special Features: O-RING IS FIBERGLASS AND MOLY-FILLED PTFE.; Part Name Assigned by Controlling Agency: SEAL,FLEXILIP,RP-5869; End Item Identification: STROKE ACTUATOR; Material: PLASTIC POLYTETRAFLUOROETHYLENE. 1 specification is 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.