PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20516O-Ring

Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco · NSN 5331-01-644-8317 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-644-8317 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-644-8317. Primary manufacturer part number: 20516.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER SYNTHETIC
  • Center Hole Diameter: 0.734 INCHES NOMINAL IN
  • 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 Synthetic construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-644-8317, 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 2 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
NSN5331-01-644-8317
Primary Part Number20516
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerClemco Industries Corp. Dba Clemco Industries Corp Div Clemco
StatusACTIVE
MaterialRUBBER SYNTHETIC
Center Hole Diameter0.734 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5360-00-300-423120516 INTERCHANGEABLE
Spring,helical,compression
L3harris Technologies, Inc. Div Space and Airborne Systems
5940-00-518-8452 INTERCHANGEABLE
Adapter,radio Frequency Cable
4730-00-678-9720205-16 INTERCHANGEABLE
Nut,tube Coupling
Lenz Inc Dba the Lenz Company
7510-01-060-589620516 INTERCHANGEABLE
Pencil Assortment,colored
Sanford Corp
5331-01-342-2545205-16 INTERCHANGEABLE
O-Ring
Cornell-Carr Co., Inc.
2915-01-420-394220516 INTERCHANGEABLE
Filter Element,fluid
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
5950-01-445-0585672-0731-010 INTERCHANGEABLE
Transformer,power
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
Cross-Reference Index
Part NumberManufacturer
20516 Proliance Consulting, Llc (USA)
20516 PRIMARY Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco (USA)
Related Parts
5360-00-300-4231INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
20516
5940-00-518-8452INTERCHANGEABLE
ADAPTER,RADIO FREQUENCY CABLE
4730-00-678-9720INTERCHANGEABLE
NUT,TUBE COUPLING
205-16
7510-01-060-5896INTERCHANGEABLE
PENCIL ASSORTMENT,COLORED
20516
5331-01-342-2545INTERCHANGEABLE
O-RING
205-16
2915-01-420-3942INTERCHANGEABLE
FILTER ELEMENT,FLUID
20516
5950-01-445-0585INTERCHANGEABLE
TRANSFORMER,POWER
672-0731-010

Frequently Asked Questions

What is NSN 5331-01-644-8317?

NSN 5331-01-644-8317 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 5331-01-644-8317?

NSN 5331-01-644-8317 has 2 cross-referenced part numbers: 20516 (Proliance Consulting, Llc), 20516 (Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco).

What NSN replaces 5331-01-644-8317?

There are 7 known substitutes for 5331-01-644-8317: 5360-00-300-4231, 5940-00-518-8452, 4730-00-678-9720 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20516?

Key specifications for 20516: Material: RUBBER SYNTHETIC; Center Hole Diameter: 0.734 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: SENTINEL O-RING; Special Features: MATERIAL IS BUNA. 4 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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