PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40002O-Ring

Separ of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter · NSN 5331-01-540-3579 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-540-3579 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-540-3579. Primary manufacturer part number: 40002.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.099 INCHES NOMINAL IN
  • Center Hole Diameter: 0.515 INCHES NOMINAL IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • 2 verified cross-references
  • Primary manufacturer: Separ of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-540-3579, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Separ of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-540-3579
Primary Part Number40002
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSepar of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter
StatusACTIVE
Cross-Sectional Height0.099 INCHES NOMINAL IN
Center Hole Diameter0.515 INCHES NOMINAL IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4730-00-068-655313211E4792 INTERCHANGEABLE
Coupling Assembly,quick Disconne
Cecom Lr Center
3110-00-100-6150 INTERCHANGEABLE
Ball,bearing
3020-00-318-7425CS4210-SR-0702 INTERCHANGEABLE
Pulley,groove
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
3920-00-462-303140002 INTERCHANGEABLE
Handle,hand Truck
Magline Inc
5975-00-834-6812 INTERCHANGEABLE
Conduit Outlet
5945-01-021-3059 INTERCHANGEABLE
Relay,electromagnetic
3439-01-184-3189SCLS4 INTERCHANGEABLE
Flux,soldering
J. W. Harris Co., Inc.
5120-01-355-20682420A INTERCHANGEABLE
Bar,pinch
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5895-01-365-517913315 INTERCHANGEABLE
Panel,patching,communication
Motorola/codex Corp Sub of Motorola Inc
4730-01-365-7024GTD4000-8 INTERCHANGEABLE
Coupling Half,self-Sealing
Gt Development Corp
Cross-Reference Index
Part NumberManufacturer
40002 PRIMARY Separ of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter (USA)
1Q 06 2413 ITEM 15 Separ of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter (USA)
Related Parts
4730-00-068-6553INTERCHANGEABLE
COUPLING ASSEMBLY,QUICK DISCONNE
13211E4792
3110-00-100-6150INTERCHANGEABLE
BALL,BEARING
3020-00-318-7425INTERCHANGEABLE
PULLEY,GROOVE
CS4210-SR-0702
3920-00-462-3031INTERCHANGEABLE
HANDLE,HAND TRUCK
40002
5975-00-834-6812INTERCHANGEABLE
CONDUIT OUTLET
5945-01-021-3059INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
3439-01-184-3189INTERCHANGEABLE
FLUX,SOLDERING
SCLS4
5120-01-355-2068INTERCHANGEABLE
BAR,PINCH
2420A
5895-01-365-5179INTERCHANGEABLE
PANEL,PATCHING,COMMUNICATION
13315
4730-01-365-7024INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
GTD4000-8
8465-01-532-6504INTERCHANGEABLE
HYDRATION SYSTEM
40002

Frequently Asked Questions

What is NSN 5331-01-540-3579?

NSN 5331-01-540-3579 is a O-Ring, manufactured by Separ of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-540-3579?

NSN 5331-01-540-3579 has 2 cross-referenced part numbers: 40002 (Separ of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter), 1Q 06 2413 ITEM 15 (Separ of the Americas, Llc Dba Separ, Losing Filtertek Div Separ Filter).

What NSN replaces 5331-01-540-3579?

There are 11 known substitutes for 5331-01-540-3579: 4730-00-068-6553, 3110-00-100-6150, 3020-00-318-7425 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40002?

Key specifications for 40002: Cross-Sectional Height: 0.099 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: DRAIN VALVE O-RING; End Item Identification: FILTER,DUPLEX,METAL; Special Features: OD IS 0.625 INCHES; MATERIAL IS NOT COMPATIBLE WITH ALCOHOL ADDITIVES IN. 6 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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