PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9177491-2O-Ring

Us Army Aviation and Missile Command · NSN 5331-00-976-4547 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-976-4547 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-976-4547. Primary manufacturer part number: 9177491-2.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
  • Center Hole Diameter: 3.615 INCHES MINIMUM AND 3.635 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU
  • 1 verified cross-reference
  • Primary manufacturer: Us Army Aviation and Missile Command
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr or Rubber Polyester Urethane Class Au or Rubber Polyether Urethane Class Eu construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-976-4547, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-976-4547
Primary Part Number9177491-2
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerUs Army Aviation and Missile Command
StatusACTIVE
Cross-Sectional Height0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
Center Hole Diameter3.615 INCHES MINIMUM AND 3.635 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6625-00-887-7414SB103 INTERCHANGEABLE
Adapter,test
Iet Labs Inc
Cross-Reference Index
Part NumberManufacturer
9177491-2 PRIMARY Us Army Aviation and Missile Command (USA)
Related Parts
6625-00-887-7414INTERCHANGEABLE
ADAPTER,TEST
SB103

Frequently Asked Questions

What is NSN 5331-00-976-4547?

NSN 5331-00-976-4547 is a O-Ring, manufactured by Us Army Aviation and Missile Command, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-976-4547?

NSN 5331-00-976-4547 has 1 cross-referenced part number: 9177491-2 (Us Army Aviation and Missile Command).

What NSN replaces 5331-00-976-4547?

There is 1 known substitute for 5331-00-976-4547: 6625-00-887-7414. Verify interchangeability with system specifications before substitution.

What are the specifications of 9177491-2?

Key specifications for 9177491-2: Cross-Sectional Height: 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Center Hole Diameter: 3.615 INCHES MINIMUM AND 3.635 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU. 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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