The Seal,plain Encased, cataloged under National Stock Number 5330-00-176-5732, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-176-5732 |
| Primary Part Number | 7B9968 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Attachment Hole Diameter | 0.312 INCHES NOMINAL IN |
| Attachment Feature Quantity | 4 |
| Temp Rating | -40.0 FAHRENHEIT DEGF |
| Seal Width | 1.125 INCHES NOMINAL IN |
| Sealing Element Style | VERTICAL-EXTERNAL |
| Housing Bore Diameter | 4.000 INCHES NOMINAL IN |
| Case Style | RECESSED |
| Accommodated Shaft Diameter | 2.500 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC SEALING ELEMENT A |
| Material | RUBBER SYNTHETIC SEALING ELEMENT B |
| Attachment Method | ROUND 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 |
|---|---|
| 7B9968 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| CA5121H | 5/2 Secondary reference U.S. Government activity |
| 7B9968 | 5/9 Secondary reference Spalla Inc |
NSN 5330-00-176-5732 is a Seal,plain Encased, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-176-5732 has 1 manufacturer part number on file: 7B9968 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 7B9968: Attachment Hole Diameter: 0.312 INCHES NOMINAL IN; Attachment Feature Quantity: 4; Temp Rating: -40.0 FAHRENHEIT DEGF; Seal Width: 1.125 INCHES NOMINAL IN. 11 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.