PartsTable TECHNICAL DATA SHEET

NSN 5331-01-020-5263Government record, cited

O-Ring5331-01-020-5263

NSN 5331-01-020-5263 · NIIN 010205263 · Part number 78151-139

Triumph Engine Control Systems Llc · FSC 5331 — O-ring · FSG 53 — Hardware and Abrasives · CAGE 11599

Government record, cited

NSN 5331-01-020-5263 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-020-5263. Manufacturer of record part number: 78151-139.

Also searched as 5331-01-020-5263 · 5331010205263 · NIIN 010205263 · 01-020-5263 · FSC 5331 O-ring · CAGE 11599 · 78151-139

Nearby stock numbers ← 5331-01-020-5262 · 5331-01-020-5264 O-Ring →

5331-01-020-5263 — O-ring

Features

O-Ring — FSC 5331
Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
Center Hole Diameter: 2.165 INCHES MINIMUM AND 2.185 INCHES MAXIMUM IN
Material: RUBBER FLUOROSILICONE CLASS FQ
1 manufacturer part number on file
Manufacturer of record: Triumph Engine Control Systems Llc

Identification

NSN: 5331-01-020-5263
NIIN: 010205263
FSC: 5331 — O-ring
FSG: 53 — Hardware and Abrasives
Primary part number: 78151-139
Manufacturer: Triumph Engine Control Systems Llc

General Description

The O-Ring, cataloged under National Stock Number 5331-01-020-5263, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 3 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	5331-01-020-5263
Primary Part Number	78151-139
Item Name	O-Ring
FSC / FSG	5331 / 53 — O-ring
Manufacturer	Triumph Engine Control Systems Llc
Status	ACTIVE
Cross-Sectional Height	0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
Center Hole Diameter	2.165 INCHES MINIMUM AND 2.185 INCHES MAXIMUM IN
Material	RUBBER FLUOROSILICONE CLASS FQ

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
78151-139 PRIMARY	Triumph Engine Control Systems Llc (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 5331-01-020-5263?

NSN 5331-01-020-5263 is a O-Ring, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5331, O-ring. Status: active.

What part numbers are listed for NSN 5331-01-020-5263?

NSN 5331-01-020-5263 has 1 manufacturer part number on file: 78151-139 (Triumph Engine Control Systems Llc).

What are the specifications of 78151-139?

Key specifications for 78151-139: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Center Hole Diameter: 2.165 INCHES MINIMUM AND 2.185 INCHES MAXIMUM IN; Material: RUBBER FLUOROSILICONE CLASS FQ. 3 specifications are documented in the U.S. Government catalog.

Is NSN 5331-01-020-5263 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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