PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30327O-Ring

W.w. Grainger, Inc. Div Government Sales Division · NSN 5331-01-278-9491 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-278-9491 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-278-9491. Primary manufacturer part number: 30327.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: W.w. Grainger, Inc. Div Government Sales Division
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-278-9491, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersW.w. Grainger, Inc. Div Government Sales Division (CAGE 25795)
Technical Specifications
ParameterValue
NSN5331-01-278-9491
Primary Part Number30327
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerW.w. Grainger, Inc. Div Government Sales Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4820-00-220-18472012 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
3110-00-293-84431390351 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4720-00-447-9196LL67 INTERCHANGEABLE
Hose,preformed
Wisconsin Motors, Llc
5355-00-644-160430327 INTERCHANGEABLE
Pointer,dial
Johnson Controls, Inc Div Building Efficiency
5905-00-686-2806 INTERCHANGEABLE
Resistor,variable,wire Wound,non
4930-00-944-2993524613-7 INTERCHANGEABLE
Valve Assy
Smith Meter Inc Parts Opn
5930-01-286-569730327 INTERCHANGEABLE
Switch,push
L & R Manufacturing Company
5306-01-301-348630327 INTERCHANGEABLE
Bolt
Pdi Ground Support Systems, Inc.
5342-01-685-17473318AB-6 INTERCHANGEABLE
Coupling,clamp,grooved
V I J Corp Div National Utilities Company
5342-01-685-23463318AB-7 INTERCHANGEABLE
Coupling,clamp,grooved
V I J Corp Div National Utilities Company
Cross-Reference Index
Part NumberManufacturer
30327 PRIMARY W.w. Grainger, Inc. Div Government Sales Division (USA)
Related Parts
4820-00-220-1847INTERCHANGEABLE
STEM,FLUID VALVE
2012
3110-00-293-8443INTERCHANGEABLE
BEARING,BALL,ANNULAR
1390351
4720-00-447-9196INTERCHANGEABLE
HOSE,PREFORMED
LL67
5355-00-644-1604INTERCHANGEABLE
POINTER,DIAL
30327
5905-00-686-2806INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
4930-00-944-2993INTERCHANGEABLE
VALVE ASSY
524613-7
5930-01-286-5697INTERCHANGEABLE
SWITCH,PUSH
30327
5306-01-301-3486INTERCHANGEABLE
BOLT
30327
5342-01-685-1747INTERCHANGEABLE
COUPLING,CLAMP,GROOVED
3318AB-6
5342-01-685-2346INTERCHANGEABLE
COUPLING,CLAMP,GROOVED
3318AB-7

Frequently Asked Questions

What is NSN 5331-01-278-9491?

NSN 5331-01-278-9491 is a O-Ring, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-278-9491?

NSN 5331-01-278-9491 has 1 cross-referenced part number: 30327 (W.w. Grainger, Inc. Div Government Sales Division).

What NSN replaces 5331-01-278-9491?

There are 10 known substitutes for 5331-01-278-9491: 4820-00-220-1847, 3110-00-293-8443, 4720-00-447-9196 and 7 more. Verify interchangeability with system specifications before substitution.

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