PartsTable TECHNICAL DATA SHEET

NSN 5331-01-666-0443Government record, cited

O-Ring5331-01-666-0443

NSN 5331-01-666-0443 · NIIN 016660443 · Part number S0383-A3337-010

Southern Rubber Company Incorporated · FSC 5331 — O-ring · FSG 53 — Hardware and Abrasives · CAGE 15289

Government record, cited

NSN 5331-01-666-0443 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-666-0443. Manufacturer of record part number: S0383-A3337-010.

Also searched as 5331-01-666-0443 · 5331016660443 · NIIN 016660443 · 01-666-0443 · FSC 5331 O-ring · CAGE 15289 · S0383-A3337-010

Nearby stock numbers ← 5331-01-666-0438 O-Ring · 5331-01-666-0531 O-Ring →

5331-01-666-0443 — O-ring

Features

O-Ring — FSC 5331
Temp Rating: 175.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
Outside Diameter: 0.375 INCHES NOMINAL IN
Center Hole Diameter: 0.239 INCHES NOMINAL IN
Material: RUBBER SILICONE CLASS Q
1 manufacturer part number on file
Manufacturer of record: Southern Rubber Company Incorporated

Identification

NSN: 5331-01-666-0443
NIIN: 016660443
FSC: 5331 — O-ring
FSG: 53 — Hardware and Abrasives
Primary part number: S0383-A3337-010
Manufacturer: Southern Rubber Company Incorporated

General Description

The O-Ring, cataloged under National Stock Number 5331-01-666-0443, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Southern Rubber Company Incorporated. Government technical data includes 4 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5331-01-666-0443
Primary Part Number	S0383-A3337-010
Item Name	O-Ring
FSC / FSG	5331 / 53 — O-ring
Manufacturer	Southern Rubber Company Incorporated
Status	ACTIVE
Temp Rating	175.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
Outside Diameter	0.375 INCHES NOMINAL IN
Center Hole Diameter	0.239 INCHES NOMINAL IN
Material	RUBBER SILICONE CLASS Q

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
S0383-A3337-010 PRIMARY	Southern Rubber Company Incorporated (USA)

No interchangeability data on file.

Other items in FSC 5331 — O-ring

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

5331-00-001-1971

O-RING

5331-00-001-1979

O-RING

5331-00-001-3904

O-RING

5331-00-001-3905

O-RING

5331-00-001-3906

O-RING

5331-00-001-3908

O-RING

5331-00-001-3923

O-RING

5331-00-001-3924

O-RING

Frequently Asked Questions

What is NSN 5331-01-666-0443?

NSN 5331-01-666-0443 is a O-Ring, manufactured by Southern Rubber Company Incorporated, classified under FSC 5331, O-ring. Status: active.

What part numbers are listed for NSN 5331-01-666-0443?

NSN 5331-01-666-0443 has 1 manufacturer part number on file: S0383-A3337-010 (Southern Rubber Company Incorporated).

What are the specifications of S0383-A3337-010?

Key specifications for S0383-A3337-010: Temp Rating: 175.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Outside Diameter: 0.375 INCHES NOMINAL IN; Center Hole Diameter: 0.239 INCHES NOMINAL IN; Material: RUBBER SILICONE CLASS Q. 4 specifications are documented in the U.S. Government catalog.

Is NSN 5331-01-666-0443 hazardous material?

No hazard code in the DLA record (HMIC N). 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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