PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS1611-365O-Ring

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5331-01-451-5081 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-451-5081 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-451-5081. Primary manufacturer part number: NAS1611-365.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM
  • 3 verified cross-references
  • Primary manufacturer: National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
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 5331-01-451-5081, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-451-5081
Primary Part NumberNAS1611-365
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
MaterialRUBBER ETHYLENE-PROPYLENE CLASS EPM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5331-00-127-2521NAS1611-129 INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5331-01-014-2604NAS1611-118 INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5331-01-044-2310NAS1611-009 INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5330-01-053-3994 INTERCHANGEABLE
Packing,preformed
5331-01-176-2014L0515 2-153 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5331-01-192-66232-166E515-80 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5331-01-288-7155 INTERCHANGEABLE
O-Ring
5331-01-302-2308NAS1611-155A INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5331-01-365-1069NAS1611-146A INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5331-01-451-8572NAS1611-266A INTERCHANGEABLE
O-Ring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
NAS1611-365 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NAS1611 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
917795 L3 Technologies, Inc. Div L3 Keo (USA)
Related Parts
5331-00-127-2521INTERCHANGEABLE
O-RING
NAS1611-129
5331-01-014-2604INTERCHANGEABLE
O-RING
NAS1611-118
5331-01-044-2310INTERCHANGEABLE
O-RING
NAS1611-009
5330-01-053-3994INTERCHANGEABLE
PACKING,PREFORMED
5331-01-176-2014INTERCHANGEABLE
O-RING
L0515 2-153
5331-01-192-6623INTERCHANGEABLE
O-RING
2-166E515-80
5331-01-288-7155INTERCHANGEABLE
O-RING
5331-01-302-2308INTERCHANGEABLE
O-RING
NAS1611-155A
5331-01-365-1069INTERCHANGEABLE
O-RING
NAS1611-146A
5331-01-451-8572INTERCHANGEABLE
O-RING
NAS1611-266A
5999-01-483-5623INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
TXBE-032-031U
5331-01-542-4223INTERCHANGEABLE
O-RING
NAS1611-119A

Frequently Asked Questions

What is NSN 5331-01-451-5081?

NSN 5331-01-451-5081 is a O-Ring, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-451-5081?

NSN 5331-01-451-5081 has 3 cross-referenced part numbers: NAS1611-365 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NAS1611 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 917795 (L3 Technologies, Inc. Div L3 Keo).

What NSN replaces 5331-01-451-5081?

There are 12 known substitutes for 5331-01-451-5081: 5331-00-127-2521, 5331-01-014-2604, 5331-01-044-2310 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS1611-365?

Key specifications for NAS1611-365: Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM. 1 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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