The Rubber Round Section, cataloged under National Stock Number 5330-01-079-6647, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-01-079-6647 |
| Primary Part Number | 520-4674720 ITEM25 |
| Item Name | Rubber Round Section |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Length | 65.500 INCHES NOMINAL IN |
| Material Document and Classification | MIL-R-6855 CLASS 1 GRADE 70 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Cross-Sectional Shape Style | CIRCULAR |
| Environmental Protection | FUEL RESISTANT AND OIL RESISTANT |
| Cross Section Outside Diameter | 0.125 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED |
| Nonmetallic Hardness Rating | 65.0 MINIMUM SHORE DUROMETER A AND 75.0 MAXIMUM SHORE DUROMETER A |
| 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 |
|---|---|
| 520-4674720 ITEM25 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87615-2002 ITEM 25 | 5/2 Secondary reference U.S. Government activity |
| 520-4674720 ITE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5330-01-079-6647 is a Rubber Round Section, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-079-6647 has 1 manufacturer part number on file: 520-4674720 ITEM25 (Naval Sea Systems Command).
Key specifications for 520-4674720 ITEM25: Length: 65.500 INCHES NOMINAL IN; Material Document and Classification: MIL-R-6855 CLASS 1 GRADE 70 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED; Cross-Sectional Shape Style: CIRCULAR; Environmental Protection: FUEL RESISTANT AND OIL RESISTANT. 7 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.