Back-Up Ring, Preformed Packing5330-01-643-2694

NSN 5330-01-643-2694 · NIIN 016432694

FSC 5330 — Packing and Gasket Materials · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5330-01-643-2694 · 5330016432694 · NIIN 016432694 · 01-643-2694 · FSC 5330 Packing and Gasket Materials · 828009 · 5330PL2220727

Nearby stock numbers ← 5330-01-643-2648 Gasket · 5330-01-643-2700 Gasket →

5330-01-643-2694 — Packing and Gasket Materials

Features

Back-Up Ring,preformed Packing — FSC 5330

Identification

NSN: 5330-01-643-2694
NIIN: 016432694
FSC: 5330 — Packing and Gasket Materials
FSG: 53 — Hardware and Abrasives

General Description

The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-643-2694, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5330-01-643-2694
Item Name	Back-Up Ring,preformed Packing
FSC / FSG	5330 / 53 — Packing and Gasket Materials
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	F

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
828009	3/2 Design control — primary reference U.S. Government activity
5330PL2220727	6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index

No interchangeability data on file.

Other items in FSC 5330 — Packing and Gasket Materials

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5330-00-000-0085

RETAINER

5330-00-000-0167

PARTS KIT,SEAL REPLACEMENT,MECHA

5330-00-000-5275

5330-00-000-5275 · Item name not on file

5330-00-001-1260

SEAL,NONMETALLIC SPECIAL SHAPED

5330-00-001-1833

SEAL,PLAIN ENCASED

5330-00-001-1844

GLAND,RESERVOIR,INDICATOR END

5330-00-001-1845

5330-00-001-1845 · Item name not on file

5330-00-001-1846

5330-00-001-1846 · Item name not on file

Frequently Asked Questions

What is NSN 5330-01-643-2694?

NSN 5330-01-643-2694 is a Back-Up Ring,preformed Packing, classified under FSC 5330, Packing and Gasket Materials. Status: active.

What are the specifications of 5330-01-643-2694?

Key specifications for 5330-01-643-2694: Part Name Assigned by Controlling Agency: BACKUP RING; End Item Identification: S.E.A. FIRST STAGE W/ CYLINDER ASSY.. 0 specifications are documented in the U.S. Government catalog.

Is NSN 5330-01-643-2694 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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