PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J221P129O-Ring

General Electric Company · NSN 5331-00-821-4885 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-821-4885 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-821-4885. Primary manufacturer part number: J221P129.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 1.539 INCHES MINIMUM AND 1.559 INCHES MAXIMUM IN
  • Material: RUBBER
  • Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
  • 5 verified cross-references
  • Primary manufacturer: General Electric Company
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-821-4885, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is General Electric Company. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, 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
NSN5331-00-821-4885
Primary Part NumberJ221P129
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerGeneral Electric Company
StatusACTIVE
Center Hole Diameter1.539 INCHES MINIMUM AND 1.559 INCHES MAXIMUM IN
MaterialRUBBER
Cross-Sectional Height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5331-00-167-5117AS3209-129 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
R149P129A Stillman Seal Corporation Div Stillman Seal Corperation (USA)
J221P129 PRIMARY General Electric Company (USA)
R149P129A General Electric Company (USA)
R149P129A General Electric Company (USA)
5331PL0885786 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
5331-00-167-5117INTERCHANGEABLE
O-RING
AS3209-129

Frequently Asked Questions

What is NSN 5331-00-821-4885?

NSN 5331-00-821-4885 is a O-Ring, manufactured by General Electric Company, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-821-4885?

NSN 5331-00-821-4885 has 5 cross-referenced part numbers: R149P129A (Stillman Seal Corporation Div Stillman Seal Corperation), J221P129 (General Electric Company), R149P129A (General Electric Company), R149P129A (General Electric Company), 5331PL0885786 (Jednolity Indeks Materialowy - Uniform Material Index).

What NSN replaces 5331-00-821-4885?

There is 1 known substitute for 5331-00-821-4885: 5331-00-167-5117. Verify interchangeability with system specifications before substitution.

What are the specifications of J221P129?

Key specifications for J221P129: Center Hole Diameter: 1.539 INCHES MINIMUM AND 1.559 INCHES MAXIMUM IN; Material: RUBBER; Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN. 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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