PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

16-218O-Ring

Name: 16-218
SKU: 5331-01-425-3039

Metrex Valve Corp. Dba Metrex Valve Corp · NSN 5331-01-425-3039 · FSC 5331 · O-Ring

Verified by PartsTable

NSN 5331-01-425-3039 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-425-3039. Primary manufacturer part number: 16-218.

5331-01-425-3039 — O-Ring illustration

Features

O-Ring — FSC 5331
2 verified cross-references
Primary manufacturer: Metrex Valve Corp. Dba Metrex Valve Corp

Applications

Fluid containment and leak prevention
Pressure boundary maintenance
Environmental sealing

General Description

The O-Ring, cataloged under National Stock Number 5331-01-425-3039, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Metrex Valve Corp. Dba Metrex Valve Corp. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts

Item Name	O-Ring
FSC / FSG	5331 — O-Ring (FSG 53)
Manufacturers	Metrex Valve Corp. Dba Metrex Valve Corp (CAGE 21013)

Technical Specifications

Parameter	Value
NSN	5331-01-425-3039
Primary Part Number	16-218
Item Name	O-Ring
FSC / FSG	5331 / 53 — O-Ring
Manufacturer	Metrex Valve Corp. Dba Metrex Valve Corp
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
HAZMAT	No

⇄ Verified Substitutes 12

4920-00-041-1078162-18 INTERCHANGEABLE

Tester

Meggitt Safety Systems Inc

5365-00-043-40233912681001 INTERCHANGEABLE

Spacer,ring

Parker Hannifin Corporation Div Cylinder Division

5950-00-090-0211 INTERCHANGEABLE

Transformer,power

5970-00-318-715716-2-18 INTERCHANGEABLE

Insulator,washer

Allard Nazarian Group, Inc. Dba Granite State Manufacturing

1650-00-787-092416218 INTERCHANGEABLE

Piston,linear Actuating Cylinder

Moog Military Aircraft Llc

6520-00-904-1979670155 INTERCHANGEABLE

Point,endodontic

Tulsa Dental Products Llc Div Tulsa Dental Specialties And/or Maillefer North America

2530-01-061-0896 INTERCHANGEABLE

Chamber,air Brake

3110-01-232-786316218 INTERCHANGEABLE

Cup,tapered Roller Bearing

Westerbeke Corporation

5340-01-282-5933 INTERCHANGEABLE

Plug,expansion

4720-01-358-610016218 INTERCHANGEABLE

Hose,nonmetallic

New Venture Gear Inc New Process Gear Div

Cross-Reference Index

Part Number	Manufacturer
16-218 PRIMARY	Metrex Valve Corp. Dba Metrex Valve Corp (USA)
MDFPMX-3150-3W IT38	Metrex Valve Corp. Dba Metrex Valve Corp (USA)

Related Parts

4920-00-041-1078INTERCHANGEABLE

TESTER

162-18

5365-00-043-4023INTERCHANGEABLE

SPACER,RING

3912681001

5950-00-090-0211INTERCHANGEABLE

TRANSFORMER,POWER

5970-00-318-7157INTERCHANGEABLE

INSULATOR,WASHER

16-2-18

1650-00-787-0924INTERCHANGEABLE

PISTON,LINEAR ACTUATING CYLINDER

16218

6520-00-904-1979INTERCHANGEABLE

POINT,ENDODONTIC

670155

2530-01-061-0896INTERCHANGEABLE

CHAMBER,AIR BRAKE

3110-01-232-7863INTERCHANGEABLE

CUP,TAPERED ROLLER BEARING

16218

5340-01-282-5933INTERCHANGEABLE

PLUG,EXPANSION

4720-01-358-6100INTERCHANGEABLE

HOSE,NONMETALLIC

16218

6515-01-589-5074INTERCHANGEABLE

SCREW,BONE

02.205.105

1005-01-679-8136INTERCHANGEABLE

BUFFER ASSEMBLY,RECOIL

16218

Frequently Asked Questions

What is NSN 5331-01-425-3039?

NSN 5331-01-425-3039 is a O-Ring, manufactured by Metrex Valve Corp. Dba Metrex Valve Corp, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-425-3039?

NSN 5331-01-425-3039 has 2 cross-referenced part numbers: 16-218 (Metrex Valve Corp. Dba Metrex Valve Corp), MDFPMX-3150-3W IT38 (Metrex Valve Corp. Dba Metrex Valve Corp).

What NSN replaces 5331-01-425-3039?

There are 12 known substitutes for 5331-01-425-3039: 4920-00-041-1078, 5365-00-043-4023, 5950-00-090-0211 and 9 more. Verify interchangeability with system specifications before substitution.

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.

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