PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11166O-Ring

Tyco Fire Products Lp · NSN 5331-01-687-3970 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-687-3970 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-687-3970. Primary manufacturer part number: 11166.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Tyco Fire Products Lp
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-687-3970, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Tyco Fire Products Lp. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersTyco Fire Products Lp (CAGE 03670)
Technical Specifications
ParameterValue
NSN5331-01-687-3970
Primary Part Number11166
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerTyco Fire Products Lp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-158-60131228Z52 INTERCHANGEABLE
Bearing,roller,cylindrical
Meritor Industrial Products, Llc
5340-00-290-07598176389 INTERCHANGEABLE
Clamp,loop
Us Army Aviation and Missile Command
5305-00-891-4179 INTERCHANGEABLE
Screw,machine
1630-01-173-572411166 INTERCHANGEABLE
Cap,valve,brake
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4320-01-190-9129CA8079-15 INCONEL 625 INTERCHANGEABLE
Sleeve,shaft,pump
Air & Liquid Systems Corporation Dba Buffalo Pumps
6150-01-302-829911166-050 INTERCHANGEABLE
Cable Assembly,power,electrical
Monroe Integro, Llc
6650-01-572-744713104060 INTERCHANGEABLE
Stand,illuminated,refractometer
Reichert Inc Dba Reichert Inc
Cross-Reference Index
Part NumberManufacturer
11166 PRIMARY Tyco Fire Products Lp (USA)
Related Parts
3110-00-158-6013INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
1228Z52
5340-00-290-0759INTERCHANGEABLE
CLAMP,LOOP
8176389
5305-00-891-4179INTERCHANGEABLE
SCREW,MACHINE
1630-01-173-5724INTERCHANGEABLE
CAP,VALVE,BRAKE
11166
4320-01-190-9129INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
CA8079-15 INCONEL 625
6150-01-302-8299INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
11166-050
6650-01-572-7447INTERCHANGEABLE
STAND,ILLUMINATED,REFRACTOMETER
13104060

Frequently Asked Questions

What is NSN 5331-01-687-3970?

NSN 5331-01-687-3970 is a O-Ring, manufactured by Tyco Fire Products Lp, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-687-3970?

NSN 5331-01-687-3970 has 1 cross-referenced part number: 11166 (Tyco Fire Products Lp).

What NSN replaces 5331-01-687-3970?

There are 7 known substitutes for 5331-01-687-3970: 3110-00-158-6013, 5340-00-290-0759, 5305-00-891-4179 and 4 more. Verify interchangeability with system specifications before substitution.

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