Seal, Plain Encased5330-01-301-5991

NSN 5330-01-301-5991 · NIIN 013015991

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

Government record, cited

Also searched as 5330-01-301-5991 · 5330013015991 · NIIN 013015991 · 01-301-5991 · FSC 5330 Packing and Gasket Materials

Nearby stock numbers ← 5330-01-301-5990 Seal, Plain Encased · 5330-01-301-5995 Gasket →

5330-01-301-5991 — Packing and Gasket Materials

Features

Seal,plain Encased — FSC 5330
Seal Width: 1.016 INCHES NOMINAL IN
Sealing Element Style: VERTICAL
Outside Diameter: 5.381 INCHES NOMINAL IN
Housing Bore Diameter: 5.381 INCHES NOMINAL IN
Case Style: SQUARE
Accommodated Shaft Diameter: 3.875 INCHES NOMINAL IN
Surface Treatment: PLASTIC CASE

Identification

NSN: 5330-01-301-5991
NIIN: 013015991
FSC: 5330 — Packing and Gasket Materials
FSG: 53 — Hardware and Abrasives

General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-01-301-5991, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5330-01-301-5991
Item Name	Seal,plain Encased
FSC / FSG	5330 / 53 — Packing and Gasket Materials
Status	ACTIVE
Seal Width	1.016 INCHES NOMINAL IN
Sealing Element Style	VERTICAL
Outside Diameter	5.381 INCHES NOMINAL IN
Housing Bore Diameter	5.381 INCHES NOMINAL IN
Case Style	SQUARE
Accommodated Shaft Diameter	3.875 INCHES NOMINAL IN
Surface Treatment	PLASTIC CASE
Material	STEEL CASE
Material	STEEL CORROSION RESISTING SPRING
Material	RUBBER SYNTHETIC SEALING ELEMENT

Lifecycle & Compliance

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

Cross-Reference Index

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

Reference documents

Reference	Meaning
38747	3/9 Design control — primary reference U.S. Government activity

Frequently Asked Questions

What is NSN 5330-01-301-5991?

NSN 5330-01-301-5991 is a Seal,plain Encased, classified under FSC 5330, Packing and Gasket Materials. Status: active.

What are the specifications of 5330-01-301-5991?

Key specifications for 5330-01-301-5991: Seal Width: 1.016 INCHES NOMINAL IN; Sealing Element Style: VERTICAL; Outside Diameter: 5.381 INCHES NOMINAL IN; Housing Bore Diameter: 5.381 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.

Is NSN 5330-01-301-5991 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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