The Seal,nonmetallic Special Shaped, cataloged under National Stock Number 5330-01-274-0284, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Kirkhill, Inc. Dba Kirkhill Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-274-0284 |
| Primary Part Number | 4W21123-105A |
| Item Name | Seal,nonmetallic Special Shaped |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Kirkhill, Inc. Dba Kirkhill Inc |
| Status | ACTIVE |
| Attachment Hole Diameter | 0.301 INCHES MINIMUM AND 0.301 INCHES MINIMUM AND 0.328 INCHES MAXIMUM0.328 INCHES MAXIMUM IN |
| Attachment Feature Quantity | 4747 |
| Cross-Sectional Thickness | 0.050 INCHES NOMINAL0.050 INCHES NOMINAL IN |
| Cross-Sectional Height | 0.130 INCHES NOMINAL0.130 INCHES NOMINAL IN |
| Cross-Sectional Width | 1.150 INCHES NOMINAL1.150 INCHES NOMINAL IN |
| Style Designator | OVAL |
| Cross-Sectional Shape Style | SPECIALSPECIAL |
| Aperture Width | 12.900 INCHES NOMINAL12.900 INCHES NOMINAL IN |
| Aperture Length | 21.900 INCHES NOMINAL21.900 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL |
| Construction | SOLIDSOLID |
| Attachment Method | ROUND HOLEROUND HOLE |
| 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 |
|---|---|
| 4W21123-105A | Kirkhill, Inc. Dba Kirkhill Inc (USA) |
| Reference | Meaning |
|---|---|
| 4W21123-105A | 5/9 Secondary reference U.S. Government activity |
| 4W21123-103A | 3/2 Design control — primary reference U.S. Government activity |
| 4W21123-105A | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-274-0284 is a Seal,nonmetallic Special Shaped, manufactured by Kirkhill, Inc. Dba Kirkhill Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-274-0284 has 1 manufacturer part number on file: 4W21123-105A (Kirkhill, Inc. Dba Kirkhill Inc).
Key specifications for 4W21123-105A: Attachment Hole Diameter: 0.301 INCHES MINIMUM AND 0.301 INCHES MINIMUM AND 0.328 INCHES MAXIMUM0.328 INCHES MAXIMUM IN; Attachment Feature Quantity: 4747; Cross-Sectional Thickness: 0.050 INCHES NOMINAL0.050 INCHES NOMINAL IN; Cross-Sectional Height: 0.130 INCHES NOMINAL0.130 INCHES NOMINAL IN. 12 specifications are 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.