PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA1373-912O-Ring

Pall Aeropower Corporation · NSN 5331-00-394-9850 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-394-9850 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-394-9850. Primary manufacturer part number: AA1373-912.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 0.924 INCHES NOMINAL IN
  • Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM
  • Cross-Sectional Height: 0.116 INCHES NOMINAL IN
  • 23 verified cross-references
  • Primary manufacturer: Pall Aeropower Corporation
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Ethylene-Propylene Class Epm construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-394-9850, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Pall Aeropower Corporation. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-394-9850
Primary Part NumberAA1373-912
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerPall Aeropower Corporation
StatusCANCELLED
Center Hole Diameter0.924 INCHES NOMINAL IN
MaterialRUBBER ETHYLENE-PROPYLENE CLASS EPM
Cross-Sectional Height0.116 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5331-00-251-8839MS28778-12 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-812-9586906-12-9077 INTERCHANGEABLE
O-Ring
Parker Hannifin Corporation Div O-Ring Division
5331-00-935-9203 INTERCHANGEABLE
O-Ring
5331-01-266-3293 INTERCHANGEABLE
O-Ring
5331-01-287-4828NAS1612-12A INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
AA1373-912 PRIMARY Pall Aeropower Corporation (USA)
SCRBZ1520-12 PRIMARY Stillman Seal Corporation Div Stillman Seal Corperation (USA)
AN6290-12 Aeronautical Standards Group Dept of Navy and Air Force (USA)
B181-9-3-12 Parker-Hannifin Corp Div O-Ring Division (USA)
779B13ITEM11 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
NAS1613 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
E0515 3-912 Parker-Hannifin Corp Div O-Ring Division (USA)
B55106-12 PRIMARY Parco, Llc (USA)
100A1Z12 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
E0540-80 PRIMARY Parker-Hannifin Corp Div O-Ring Division (USA)
779REVAPC29 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
NAS1612-12 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
100A12-12 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
70097147 Bae Systems Marine Limited (GBR)
SRC-BZ1520-12 Stillman Seal Corporation Div Stillman Seal Corperation (USA)
B181-9-3-12 Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division (USA)
E0540-80 Parker Hannifin Limited (GBR)
BACP11H12 PRIMARY The Boeing Company Div Defense (USA)
912-9259 PRIMARY Parker Hannifin Corporation Div O-Ring Division (USA)
649-602-903-0 Cfm International Inc Dba Cfm International (USA)
Related Parts
5331-00-251-8839INTERCHANGEABLE
O-RING
MS28778-12
5331-00-812-9586INTERCHANGEABLE
O-RING
906-12-9077
5331-00-935-9203INTERCHANGEABLE
O-RING
5331-01-266-3293INTERCHANGEABLE
O-RING
5331-01-287-4828INTERCHANGEABLE
O-RING
NAS1612-12A

Frequently Asked Questions

What is NSN 5331-00-394-9850?

NSN 5331-00-394-9850 is a O-Ring, manufactured by Pall Aeropower Corporation, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-394-9850?

NSN 5331-00-394-9850 has 23 cross-referenced part numbers: AA1373-912 (Pall Aeropower Corporation), SCRBZ1520-12 (Stillman Seal Corporation Div Stillman Seal Corperation), AN6290-12 (Aeronautical Standards Group Dept of Navy and Air Force), B181-9-3-12 (Parker-Hannifin Corp Div O-Ring Division), 779B13ITEM11 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace) and 18 more.

What NSN replaces 5331-00-394-9850?

There are 5 known substitutes for 5331-00-394-9850: 5331-00-251-8839, 5331-00-812-9586, 5331-00-935-9203 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AA1373-912?

Key specifications for AA1373-912: Center Hole Diameter: 0.924 INCHES NOMINAL IN; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM; Cross-Sectional Height: 0.116 INCHES NOMINAL IN. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-394-9850 still in active supply?

NSN 5331-00-394-9850 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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