PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21048O-Ring

Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco · NSN 5331-01-644-3042 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-644-3042 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-644-3042. Primary manufacturer part number: 21048.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 2.214 INCHES MINIMUM AND 2.254 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • 2 verified cross-references
  • Primary manufacturer: Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-644-3042, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-644-3042
Primary Part Number21048
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerClemco Industries Corp. Dba Clemco Industries Corp Div Clemco
StatusACTIVE
Center Hole Diameter2.214 INCHES MINIMUM AND 2.254 INCHES MAXIMUM IN
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5940-00-727-1327 INTERCHANGEABLE
Terminal,lug
4730-00-908-6292 INTERCHANGEABLE
Clamp,hose
3895-01-029-857021048 INTERCHANGEABLE
Backer Set
Stone Construction Equipment, Inc.
3040-01-100-505921048 INTERCHANGEABLE
Connecting Link,rigid
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5315-01-114-893621048 INTERCHANGEABLE
Pin
Paccar Winch Inc Dba Paccar Winch Division
5310-01-240-079521048 INTERCHANGEABLE
Washer,lock
Dresser, Llc
4720-01-316-4660HA48Y INTERCHANGEABLE
Hose Assembly,nonmetallic
Ritchie Engineering Co Inc
Cross-Reference Index
Part NumberManufacturer
21048 Proliance Consulting, Llc (USA)
21048 PRIMARY Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco (USA)
Related Parts
5940-00-727-1327INTERCHANGEABLE
TERMINAL,LUG
4730-00-908-6292INTERCHANGEABLE
CLAMP,HOSE
3895-01-029-8570INTERCHANGEABLE
BACKER SET
21048
3040-01-100-5059INTERCHANGEABLE
CONNECTING LINK,RIGID
21048
5315-01-114-8936INTERCHANGEABLE
PIN
21048
5310-01-240-0795INTERCHANGEABLE
WASHER,LOCK
21048
4720-01-316-4660INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
HA48Y

Frequently Asked Questions

What is NSN 5331-01-644-3042?

NSN 5331-01-644-3042 is a O-Ring, manufactured by Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-644-3042?

NSN 5331-01-644-3042 has 2 cross-referenced part numbers: 21048 (Proliance Consulting, Llc), 21048 (Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco).

What NSN replaces 5331-01-644-3042?

There are 7 known substitutes for 5331-01-644-3042: 5940-00-727-1327, 4730-00-908-6292, 3895-01-029-8570 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21048?

Key specifications for 21048: Center Hole Diameter: 2.214 INCHES MINIMUM AND 2.254 INCHES MAXIMUM IN; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 3 total characteristics are documented in the Federal Logistics Information System.

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