The Sealing Compound, cataloged under National Stock Number 8030-01-421-7956, is classified within Federal Supply Class 8030 (Preservative and Sealing Compounds) of the Brushes, Paints, Sealers, and Adhesives group. The manufacturer of record is Essex Chemical Corp. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 8030-01-421-7956 |
| Primary Part Number | 879B-2 |
| Item Name | Sealing Compound |
| FSC / FSG | 8030 / 80 — Preservative and Sealing Compounds |
| Manufacturer | Essex Chemical Corp |
| Status | ACTIVE |
| Color | BLACK |
| Specific Usage Design | FOR AERODYNAMIC SMOOTHING APPLICATIONS |
| Material | RUBBER SYNTHETIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC D) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 879B-2 PRIMARY | Essex Chemical Corp (USA) |
| Reference | Meaning |
|---|---|
| P/S 879 B-2 | 5/1 Secondary reference U.S. Government activity |
NSN 8030-01-421-7956 is a Sealing Compound, manufactured by Essex Chemical Corp, classified under FSC 8030, Preservative and Sealing Compounds. Status: active.
NSN 8030-01-421-7956 has 1 manufacturer part number on file: 879B-2 (Essex Chemical Corp).
Key specifications for 879B-2: Color: BLACK; Special Features: POLYSULFIDE; 2 HOUR WORKING TIME; Specific Usage Design: FOR AERODYNAMIC SMOOTHING APPLICATIONS; End Item Identification: F-16 AIRCRAFT. 3 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC D). 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.