The Seal,grease, cataloged under National Stock Number 5330-00-031-2400, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-031-2400 |
| Primary Part Number | 26644 |
| Item Name | Seal,grease |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| General Characteristics Item Description | ELASTOMER,BUNA-N,MOLDED TO STEEL RING,OIL FINISH,STEPPED,ROUND,0.499 MIN,0.500 MAX IN. OD,0.380 MIN,0.400 MAX IN. DIA 1ST HOLE SPACING,0.280 MIN,0.290 MAX IN. DIA 2ND HOLE SPACING,0.179 MIN,0.184 MAX IN. DIA 3RD HOLE SPACING,0.025 IN. 1ST COUNTERBORE DEPTH,0.040 MIN,0.050 MAX IN. FLANGE THK,0.200 MIN,0.220 MAX IN. COUNTERBORE DIA,0.115 MIN,0.135 MAX IN. H IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 26644 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 26644 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 26644 | 5/9 Secondary reference Proponent, Inc. Dba Proponent |
| 26644 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
NSN 5330-00-031-2400 is a Seal,grease, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-031-2400 has 2 manufacturer part numbers on file: 26644 (Honeywell International Inc. Div Aerospace - Torrance), 26644 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
1 possible match (shared part number, not a government interchangeability claim): 4310-00-709-2798. Verify interchangeability with system specifications before substitution.
Key specifications for 26644: General Characteristics Item Description: ELASTOMER,BUNA-N,MOLDED TO STEEL RING,OIL FINISH,STEPPED,ROUND,0.499 MIN,0.500 MAX IN. OD,0.380 MIN,0.400 MAX IN. DIA 1ST HOLE SPACING,0.280 MIN,0.290 MAX IN. DIA 2ND HOLE SPACING,0.179 MIN,0.184 MAX IN. DIA 3RD HOLE SPACING,0.025 IN. 1ST COUNTERBORE DEPTH,0.040 MIN,0.050 MAX IN. FLANGE THK,0.200 MIN,0.220 MAX IN. COUNTERBORE DIA,0.115 MIN,0.135 MAX IN. H IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.