The O-Ring, cataloged under National Stock Number 5331-01-437-9238, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division (CAGE 5XH59) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-437-9238 |
| Primary Part Number | D20306 PIECE 112 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| D20306 PIECE 112 | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division (USA) |
| Reference | Meaning |
|---|---|
| D20306 PIECE 112 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5331-01-437-9238 is a O-Ring, manufactured by Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-437-9238 has 1 manufacturer part number on file: D20306 PIECE 112 (Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division).
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.